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Problème à la mise à niveau de Ubuntu 18.04 LTS à 20.04 LTS

zigroful1

Voici:

cat /var/log/dist-upgrade/main.log
2020-10-09 12:06:01,164 INFO Using config files '['./DistUpgrade.cfg.bionic']'
2020-10-09 12:06:01,164 INFO uname information: 'Linux thomas-K53SD 4.15.0-118-generic #119-Ubuntu SMP Tue Sep 8 12:30:01 UTC 2020 x86_64'
2020-10-09 12:06:01,667 INFO apt version: '1.6.12ubuntu0.1'
2020-10-09 12:06:01,667 INFO python version: '3.6.9 (default, Jul 17 2020, 12:50:27) 
[GCC 8.4.0]'
2020-10-09 12:06:01,671 INFO release-upgrader version '20.04.25' started
2020-10-09 12:06:01,757 INFO locale: 'fr_FR' 'UTF-8'
2020-10-09 12:06:02,138 DEBUG Using 'DistUpgradeViewGtk3' view
2020-10-09 12:06:02,196 DEBUG enable dpkg --force-overwrite
2020-10-09 12:06:02,215 DEBUG creating statefile: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
2020-10-09 12:06:09,068 DEBUG lsb-release: 'bionic'
2020-10-09 12:06:09,069 DEBUG _pythonSymlinkCheck run
2020-10-09 12:06:09,143 DEBUG openCache()
2020-10-09 12:06:09,143 DEBUG quirks: running PreCacheOpen
2020-10-09 12:06:09,143 DEBUG running Quirks.PreCacheOpen
2020-10-09 12:06:10,832 DEBUG Comparing 4.15.0-117 with 
2020-10-09 12:06:10,832 DEBUG Comparing 4.15.0-118 with 4.15.0-117
2020-10-09 12:06:11,305 DEBUG /openCache(), new cache size 100001
2020-10-09 12:06:11,305 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2020-10-09 12:06:11,305 DEBUG checkViewDepends()
2020-10-09 12:06:11,310 DEBUG running doUpdate() (showErrors=False)
2020-10-09 12:06:14,737 DEBUG openCache()
2020-10-09 12:06:16,400 DEBUG Comparing 4.15.0-117 with 
2020-10-09 12:06:16,400 DEBUG Comparing 4.15.0-118 with 4.15.0-117
2020-10-09 12:06:16,883 DEBUG /openCache(), new cache size 100001
2020-10-09 12:06:16,884 DEBUG doPostInitialUpdate
2020-10-09 12:06:16,884 DEBUG quirks: running focalPostInitialUpdate
2020-10-09 12:06:16,884 DEBUG running Quirks.focalPostInitialUpdate
2020-10-09 12:06:20,001 DEBUG Snap core18 is installed
2020-10-09 12:06:20,325 DEBUG Snap gtk-common-themes is installed
2020-10-09 12:06:20,714 DEBUG Snap gnome-3-28-1804 is installed
2020-10-09 12:06:20,715 DEBUG Snap gnome-3-28-1804 is not tracking the release channel
2020-10-09 12:06:20,952 DEBUG Snap gnome-calculator is installed
2020-10-09 12:06:21,155 DEBUG Snap gnome-characters is installed
2020-10-09 12:06:21,444 DEBUG Snap gnome-logs is installed
2020-10-09 12:06:25,574 DEBUG MetaPkgs: ubuntu-desktop
2020-10-09 12:06:32,045 DEBUG Foreign: 
2020-10-09 12:06:32,045 DEBUG Obsolete: 
2020-10-09 12:06:32,046 DEBUG updateSourcesList()
2020-10-09 12:06:32,057 DEBUG rewriteSourcesList() with mirror_check
2020-10-09 12:06:32,062 DEBUG ['ubuntu-minimal', 'ubuntu-standard']
2020-10-09 12:06:32,062 DEBUG Checking pkg: ubuntu-minimal
2020-10-09 12:06:32,066 DEBUG Checking pkg: ubuntu-standard
2020-10-09 12:06:32,070 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic main restricted'
2020-10-09 12:06:32,070 DEBUG verifySourcesListEntry: deb http://fr.archive.ubuntu.com/ubuntu/ focal main restricted
2020-10-09 12:06:32,070 DEBUG url_downloadable: http://fr.archive.ubuntu.com/ubuntu//dists/focal/Release
2020-10-09 12:06:32,070 DEBUG s='http' n='fr.archive.ubuntu.com' p='/ubuntu//dists/focal/Release' q='' f=''
2020-10-09 12:06:32,089 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal main restricted' updated to new dist
2020-10-09 12:06:32,089 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic main restricted'
2020-10-09 12:06:32,089 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal main restricted' updated to new dist
2020-10-09 12:06:32,089 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-updates main restricted'
2020-10-09 12:06:32,089 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-updates main restricted' updated to new dist
2020-10-09 12:06:32,089 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-updates main restricted'
2020-10-09 12:06:32,090 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-updates main restricted' updated to new dist
2020-10-09 12:06:32,090 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic universe'
2020-10-09 12:06:32,090 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal universe' updated to new dist
2020-10-09 12:06:32,090 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic universe'
2020-10-09 12:06:32,090 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal universe' updated to new dist
2020-10-09 12:06:32,090 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-updates universe'
2020-10-09 12:06:32,090 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-updates universe' updated to new dist
2020-10-09 12:06:32,090 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-updates universe'
2020-10-09 12:06:32,090 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-updates universe' updated to new dist
2020-10-09 12:06:32,090 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic multiverse'
2020-10-09 12:06:32,090 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal multiverse' updated to new dist
2020-10-09 12:06:32,090 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic multiverse'
2020-10-09 12:06:32,091 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal multiverse' updated to new dist
2020-10-09 12:06:32,091 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-updates multiverse'
2020-10-09 12:06:32,091 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-updates multiverse' updated to new dist
2020-10-09 12:06:32,091 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-updates multiverse'
2020-10-09 12:06:32,091 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-updates multiverse' updated to new dist
2020-10-09 12:06:32,091 DEBUG examining: 'deb http://archive.canonical.com/ubuntu bionic partner'
2020-10-09 12:06:32,091 DEBUG verifySourcesListEntry: deb http://archive.canonical.com/ubuntu focal partner
2020-10-09 12:06:32,091 DEBUG url_downloadable: http://archive.canonical.com/ubuntu/dists/focal/Release
2020-10-09 12:06:32,091 DEBUG s='http' n='archive.canonical.com' p='/ubuntu/dists/focal/Release' q='' f=''
2020-10-09 12:06:32,277 DEBUG entry 'deb http://archive.canonical.com/ubuntu focal partner' updated to new dist
2020-10-09 12:06:32,278 DEBUG examining: 'deb-src http://archive.canonical.com/ubuntu bionic partner'
2020-10-09 12:06:32,278 DEBUG entry 'deb-src http://archive.canonical.com/ubuntu focal partner' updated to new dist
2020-10-09 12:06:32,278 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-security main restricted'
2020-10-09 12:06:32,278 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-security main restricted' updated to new dist
2020-10-09 12:06:32,278 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-security main restricted'
2020-10-09 12:06:32,278 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-security main restricted' updated to new dist
2020-10-09 12:06:32,278 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-security universe'
2020-10-09 12:06:32,278 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-security universe' updated to new dist
2020-10-09 12:06:32,278 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-security universe'
2020-10-09 12:06:32,278 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-security universe' updated to new dist
2020-10-09 12:06:32,278 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-security multiverse'
2020-10-09 12:06:32,279 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-security multiverse' updated to new dist
2020-10-09 12:06:32,279 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-security multiverse'
2020-10-09 12:06:32,279 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-security multiverse' updated to new dist
2020-10-09 12:06:32,281 DEBUG running doUpdate() (showErrors=True)
2020-10-09 12:06:56,857 DEBUG openCache()
2020-10-09 12:06:58,107 DEBUG Comparing 4.15.0-117 with 
2020-10-09 12:06:58,107 DEBUG Comparing 4.15.0-118 with 4.15.0-117
2020-10-09 12:06:58,416 DEBUG /openCache(), new cache size 67074
2020-10-09 12:06:58,417 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2020-10-09 12:06:58,417 DEBUG quirks: running PreDistUpgradeCache
2020-10-09 12:06:58,417 DEBUG running Quirks.PreDistUpgradeCache
2020-10-09 12:06:58,418 INFO installing python-is-python2 because python-minimal was installed
2020-10-09 12:06:58,418 DEBUG Installing 'python-is-python2' (python-minimal was installed on the system)
2020-10-09 12:07:04,041 ERROR Dist-upgrade failed: 'E:Impossible de corriger les problèmes, des paquets défectueux sont en mode « garder en l'état ».'
2020-10-09 12:07:04,043 DEBUG abort called
2020-10-09 12:07:04,044 DEBUG openCache()
2020-10-09 12:07:07,921 DEBUG Comparing 4.15.0-117 with 
2020-10-09 12:07:07,921 DEBUG Comparing 4.15.0-118 with 4.15.0-117
2020-10-09 12:07:08,420 DEBUG /openCache(), new cache size 100001

Et voici:

cat /var/log/dist-upgrade/apt.log
Log time: 2020-10-09 12:06:11.300968
Log time: 2020-10-09 12:06:16.868580
Log time: 2020-10-09 12:06:58.403099
  MarkInstall python-is-python2:amd64 < none -> 2.7.17-4 @un uN Ib > FU=1
  Installing python2 as Dépend of python-is-python2
    MarkInstall python2:amd64 < none -> 2.7.17-2ubuntu4 @un uN Ib > FU=0
    Installing python2-minimal as Pré-Dépend of python2
      MarkInstall python2-minimal:amd64 < none -> 2.7.17-2ubuntu4 @un uN Ib > FU=0
       Removing: python-minimal
        MarkDelete python-minimal:amd64 < 2.7.15~rc1-1 @ii mK > FU=0
    Installing libpython2-stdlib as Dépend of python2
      MarkInstall libpython2-stdlib:amd64 < none -> 2.7.17-2ubuntu4 @un uN Ib > FU=0
       Removing: libpython-stdlib
        MarkDelete libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii mK > FU=0
     Removing: python
      MarkDelete python:amd64 < 2.7.15~rc1-1 @ii mK Ib > FU=0
Starting pkgProblemResolver with broken count: 2
Starting 2 pkgProblemResolver with broken count: 2
Investigating (0) python-dbg:amd64 < 2.7.15~rc1-1 @ii mK Ib >
Broken python-dbg:amd64 Dépend on python:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python:amd64 6 as a solution to python-dbg:amd64 10
  Added python:amd64 to the remove list
  Fixing python-dbg:amd64 via keep of python:amd64
  MarkKeep python:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
Investigating (0) python:amd64 < 2.7.15~rc1-1 @ii gK Ib >
Broken python:amd64 Pré-Dépend on python-minimal:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python-minimal:amd64 0 as a solution to python:amd64 6
  Added python-minimal:amd64 to the remove list
Broken python:amd64 Dépend on libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering libpython-stdlib:amd64 0 as a solution to python:amd64 6
  Added libpython-stdlib:amd64 to the remove list
  Fixing python:amd64 via keep of python-minimal:amd64
  MarkKeep python-minimal:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
  Fixing python:amd64 via keep of libpython-stdlib:amd64
  MarkKeep libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
Investigating (0) python2:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken python2:amd64 Casse on python:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering python:amd64 6 as a solution to python2:amd64 4
  MarkKeep python2:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib > FU=0
  Holding Back python2:amd64 rather than change python:amd64
Investigating (0) python2-minimal:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken python2-minimal:amd64 Casse on python-minimal:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering python-minimal:amd64 0 as a solution to python2-minimal:amd64 3
  Added python-minimal:amd64 to the remove list
  Fixing python2-minimal:amd64 via remove of python-minimal:amd64
  MarkDelete python-minimal:amd64 < 2.7.15~rc1-1 @ii gK > FU=0
Investigating (0) libpython2-stdlib:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken libpython2-stdlib:amd64 Casse on libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering libpython-stdlib:amd64 0 as a solution to libpython2-stdlib:amd64 3
  Added libpython-stdlib:amd64 to the remove list
  Fixing libpython2-stdlib:amd64 via remove of libpython-stdlib:amd64
  MarkDelete libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gK > FU=0
Investigating (0) python-all:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib >
Broken python-all:amd64 Dépend on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH > (= 2.7.17-2ubuntu4)
  Considering python2:amd64 4 as a solution to python-all:amd64 1
  MarkKeep python-all:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib > FU=0
  Holding Back python-all:amd64 rather than change python2:amd64
Investigating (0) python-all-dbg:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib >
Broken python-all-dbg:amd64 Dépend on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH > (= 2.7.17-2ubuntu4)
  Considering python2:amd64 4 as a solution to python-all-dbg:amd64 0
  MarkKeep python-all-dbg:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib > FU=0
  Holding Back python-all-dbg:amd64 rather than change python2:amd64
Investigating (1) python-is-python2:amd64 < none -> 2.7.17-4 @un pumN Ib >
Broken python-is-python2:amd64 Dépend on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH >
  Considering python2:amd64 4 as a solution to python-is-python2:amd64 9999
  Re-Instated python2:amd64
Broken python-is-python2:amd64 Casse on python:amd64 < 2.7.15~rc1-1 @ii gK Ib >
  Considering python:amd64 6 as a solution to python-is-python2:amd64 9999
  Added python:amd64 to the remove list
  Fixing python-is-python2:amd64 via remove of python:amd64
  MarkDelete python:amd64 < 2.7.15~rc1-1 @ii gK Ib > FU=0
Investigating (1) python-dbg:amd64 < 2.7.15~rc1-1 @ii mK Ib >
Broken python-dbg:amd64 Dépend on python:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python:amd64 6 as a solution to python-dbg:amd64 10
  Added python:amd64 to the remove list
  Fixing python-dbg:amd64 via keep of python:amd64
  MarkKeep python:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
Investigating (1) python:amd64 < 2.7.15~rc1-1 @ii gK Ib >
Broken python:amd64 Pré-Dépend on python-minimal:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python-minimal:amd64 0 as a solution to python:amd64 6
  Added python-minimal:amd64 to the remove list
Broken python:amd64 Dépend on libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering libpython-stdlib:amd64 0 as a solution to python:amd64 6
  Added libpython-stdlib:amd64 to the remove list
  Fixing python:amd64 via keep of python-minimal:amd64
  MarkKeep python-minimal:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
  Fixing python:amd64 via keep of libpython-stdlib:amd64
  MarkKeep libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
Investigating (1) python2:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken python2:amd64 Casse on python:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering python:amd64 6 as a solution to python2:amd64 4
  MarkKeep python2:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib > FU=0
  Holding Back python2:amd64 rather than change python:amd64
Investigating (1) python2-minimal:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken python2-minimal:amd64 Casse on python-minimal:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering python-minimal:amd64 0 as a solution to python2-minimal:amd64 3
  Added python-minimal:amd64 to the remove list
  Fixing python2-minimal:amd64 via remove of python-minimal:amd64
  MarkDelete python-minimal:amd64 < 2.7.15~rc1-1 @ii gK > FU=0
Investigating (1) libpython2-stdlib:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken libpython2-stdlib:amd64 Casse on libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering libpython-stdlib:amd64 0 as a solution to libpython2-stdlib:amd64 3
  Added libpython-stdlib:amd64 to the remove list
  Fixing libpython2-stdlib:amd64 via remove of libpython-stdlib:amd64
  MarkDelete libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gK > FU=0
 Try to Re-Instate (1) python-all:amd64
  MarkKeep python-all:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib > FU=0
 Try to Re-Instate (1) python-all-dbg:amd64
  MarkKeep python-all-dbg:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib > FU=0
Investigating (2) python-is-python2:amd64 < none -> 2.7.17-4 @un pumN Ib >
Broken python-is-python2:amd64 Dépend on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH >
  Considering python2:amd64 4 as a solution to python-is-python2:amd64 9999
Broken python-is-python2:amd64 Casse on python:amd64 < 2.7.15~rc1-1 @ii gK Ib >
  Considering python:amd64 6 as a solution to python-is-python2:amd64 9999
  Added python:amd64 to the remove list
  Fixing python-is-python2:amd64 via remove of python:amd64
  MarkDelete python:amd64 < 2.7.15~rc1-1 @ii gK Ib > FU=0
Investigating (2) python-dbg:amd64 < 2.7.15~rc1-1 @ii mK Ib >
Broken python-dbg:amd64 Dépend on python:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python:amd64 9999 as a solution to python-dbg:amd64 10
  Removing python-dbg:amd64 rather than change python:amd64
  MarkDelete python-dbg:amd64 < 2.7.15~rc1-1 @ii mK Ib > FU=0
Investigating (2) python-all:amd64 < 2.7.15~rc1-1 | 2.7.17-2ubuntu4 @ii umH Ib >
Broken python-all:amd64 Dépend on python:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python:amd64 9999 as a solution to python-all:amd64 1
  Removing python-all:amd64 rather than change python:amd64
  MarkDelete python-all:amd64 < 2.7.15~rc1-1 | 2.7.17-2ubuntu4 @ii umH Ib > FU=0
Investigating (2) python-numpy-dbg:amd64 < 1:1.13.3-2ubuntu1 | 1:1.16.5-2ubuntu7 @ii umH Ib >
Broken python-numpy-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR >
  Considering python-dbg:amd64 9999 as a solution to python-numpy-dbg:amd64 0
    Reinst Failed because of python2:amd64
  MarkKeep python2-dbg:amd64 < none -> 2.7.17-2ubuntu4 @un uN Ib > FU=0
    Reinst Failed because of python2-dbg:amd64
  MarkKeep python-numpy-dbg:amd64 < 1:1.13.3-2ubuntu1 -> 1:1.16.5-2ubuntu7 @ii umU Ib > FU=0
  Removing python-numpy-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-numpy-dbg:amd64 < 1:1.13.3-2ubuntu1 | 1:1.16.5-2ubuntu7 @ii umH Ib > FU=0
Investigating (2) python-pil-dbg:amd64 < 5.1.0-1ubuntu0.3 | 6.2.1-3 @ii umH Ib >
Broken python-pil-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR >
  Considering python-dbg:amd64 9999 as a solution to python-pil-dbg:amd64 0
    Reinst Failed because of python2:amd64
  MarkKeep python-pil:amd64 < 5.1.0-1ubuntu0.3 -> 6.2.1-3 @ii umU Ib > FU=0
    Reinst Failed because of python-pil:amd64
  MarkKeep python-pil-dbg:amd64 < 5.1.0-1ubuntu0.3 -> 6.2.1-3 @ii umU Ib > FU=0
  Removing python-pil-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-pil-dbg:amd64 < 5.1.0-1ubuntu0.3 | 6.2.1-3 @ii umH Ib > FU=0
Investigating (2) python-all-dbg:amd64 < 2.7.15~rc1-1 | 2.7.17-2ubuntu4 @ii umH Ib >
Broken python-all-dbg:amd64 Dépend on python:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python:amd64 9999 as a solution to python-all-dbg:amd64 0
  Removing python-all-dbg:amd64 rather than change python:amd64
  MarkDelete python-all-dbg:amd64 < 2.7.15~rc1-1 | 2.7.17-2ubuntu4 @ii umH Ib > FU=0
Investigating (2) python-gobject-2-dbg:amd64 < 2.28.6-12ubuntu3 | 2.28.6-14ubuntu1 @ii umH Ib >
Broken python-gobject-2-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR > (< 2.8)
  Considering python-dbg:amd64 9999 as a solution to python-gobject-2-dbg:amd64 0
    Reinst Failed because of python2:amd64
  MarkKeep python-gobject-2:amd64 < 2.28.6-12ubuntu3 -> 2.28.6-14ubuntu1 @ii umU Ib > FU=0
    Reinst Failed because of python-gobject-2:amd64
  MarkKeep python-gobject-2-dbg:amd64 < 2.28.6-12ubuntu3 -> 2.28.6-14ubuntu1 @ii umU Ib > FU=0
  Removing python-gobject-2-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-gobject-2-dbg:amd64 < 2.28.6-12ubuntu3 | 2.28.6-14ubuntu1 @ii umH Ib > FU=0
Investigating (2) python-cairo-dbg:amd64 < 1.16.2-1 | 1.16.2-2ubuntu2 @ii umH Ib >
Broken python-cairo-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR >
  Considering python-dbg:amd64 9999 as a solution to python-cairo-dbg:amd64 0
    Reinst Failed because of python2:amd64
  MarkKeep python-cairo:amd64 < 1.16.2-1 -> 1.16.2-2ubuntu2 @ii umU Ib > FU=0
    Reinst Failed because of python-cairo:amd64
  MarkKeep python-cairo-dbg:amd64 < 1.16.2-1 -> 1.16.2-2ubuntu2 @ii umU Ib > FU=0
  Removing python-cairo-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-cairo-dbg:amd64 < 1.16.2-1 | 1.16.2-2ubuntu2 @ii umH Ib > FU=0
Investigating (2) python-tk-dbg:amd64 < 2.7.17-1~18.04 | 2.7.18-1 @ii umH Ib >
Broken python-tk-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR > (>= 2.7)
  Considering python-dbg:amd64 9999 as a solution to python-tk-dbg:amd64 -1
    Reinst Failed because of python2-dbg:amd64
  MarkKeep python-tk-dbg:amd64 < 2.7.17-1~18.04 -> 2.7.18-1 @ii umU Ib > FU=0
  Removing python-tk-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-tk-dbg:amd64 < 2.7.17-1~18.04 | 2.7.18-1 @ii umH Ib > FU=0
Investigating (2) python-gtk2-dbg:amd64 < 2.24.0-5.1ubuntu2 @ii mK Ib >
Broken python-gtk2-dbg:amd64 Dépend on python-numpy-dbg:amd64 < 1:1.13.3-2ubuntu1 | 1:1.16.5-2ubuntu7 @ii umR >
  Considering python-numpy-dbg:amd64 9999 as a solution to python-gtk2-dbg:amd64 -2
  Removing python-gtk2-dbg:amd64 rather than change python-numpy-dbg:amd64
  MarkDelete python-gtk2-dbg:amd64 < 2.24.0-5.1ubuntu2 @ii mK Ib > FU=0
Investigating (2) python-matplotlib-dbg:amd64 < 2.1.1-2ubuntu3 @ii mK Ib >
Broken python-matplotlib-dbg:amd64 Dépend on python-all-dbg:amd64 < 2.7.15~rc1-1 | 2.7.17-2ubuntu4 @ii umR >
  Considering python-all-dbg:amd64 9999 as a solution to python-matplotlib-dbg:amd64 -2
  Removing python-matplotlib-dbg:amd64 rather than change python-all-dbg:amd64
  MarkDelete python-matplotlib-dbg:amd64 < 2.1.1-2ubuntu3 @ii mK Ib > FU=0
Investigating (2) python-sane-dbg:amd64 < 2.8.3-1build3 @ii mK Ib >
Broken python-sane-dbg:amd64 Dépend on python-pil-dbg:amd64 < 5.1.0-1ubuntu0.3 | 6.2.1-3 @ii umR > (>= 2.7.0)
  Considering python-pil-dbg:amd64 9999 as a solution to python-sane-dbg:amd64 -2
  Removing python-sane-dbg:amd64 rather than change python-pil-dbg:amd64
  MarkDelete python-sane-dbg:amd64 < 2.8.3-1build3 @ii mK Ib > FU=0
Investigating (2) python-mysqldb-dbg:amd64 < 1.3.10-1build1 @ii mK Ib >
Broken python-mysqldb-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR >
  Considering python-dbg:amd64 9999 as a solution to python-mysqldb-dbg:amd64 -2
  Removing python-mysqldb-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-mysqldb-dbg:amd64 < 1.3.10-1build1 @ii mK Ib > FU=0
Investigating (3) python-is-python2:amd64 < none -> 2.7.17-4 @un pumN Ib >
Broken python-is-python2:amd64 Dépend on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH >
  Considering python2:amd64 4 as a solution to python-is-python2:amd64 9999
Done
Log time: 2020-10-09 12:07:08.404754

zigroful1

Je ne crois pas avoir virer les fonctionnalités snap !

geole

On a bien avancé. Le nouveau message d'erreur est clair

2020-10-09 12:06:58,418 INFO installing python-is-python2 because python-minimal was installed
2020-10-09 12:06:58,418 DEBUG Installing 'python-is-python2' (python-minimal was installed on the system)
2020-10-09 12:07:04,041 ERROR Dist-upgrade failed: 'E:Impossible de corriger les problèmes, des paquets défectueux sont en mode « garder en l'état ».'
2020-10-09 12:07:04,043 DEBUG abort called

J'ai le souvenir que la version python2 n'est pas prévue en 20.04 mais uniquement la version python3

Donc cette discussion est intéressante https://askubuntu.com/questions/1278878/18-04-%e2%86%92-20-04-upgrade-fails-eunable-to-correct-problems-you-have-held-broken

Trying to remove python-minimal results in the deletion of half my programs like emma, mysql workbench etc.

I got the same error. By searching in the logs I found that I could remove only python-dev instead of python-minimal and it removed only itself instead of all the rest of python-minimal's dependency packages. After removing python-dev I could upgrade from 18.04 to 20.04. – karel Sep 30 at 14
Donc

sudo apt remove --purge  python-dev

et nouvelle tentative

zigroful1

Voici à nouveau:

sudo apt remove --purge  python-dev
[sudo] Mot de passe de thomas : 
Lecture des listes de paquets... Fait
Construction de l'arbre des dépendances       
Lecture des informations d'état... Fait
Le paquet « python-dev » n'est pas installé, et ne peut donc être supprimé
0 mis à jour, 0 nouvellement installés, 0 à enlever et 0 non mis à jour.

Et voici apt.log:

cat /var/log/dist-upgrade/apt.log
Log time: 2020-10-09 13:50:52.768317
Log time: 2020-10-09 13:50:58.801290
Log time: 2020-10-09 13:51:42.176458
  MarkInstall python-is-python2:amd64 < none -> 2.7.17-4 @un uN Ib > FU=1
  Installing python2 as Dépend of python-is-python2
    MarkInstall python2:amd64 < none -> 2.7.17-2ubuntu4 @un uN Ib > FU=0
    Installing python2-minimal as Pré-Dépend of python2
      MarkInstall python2-minimal:amd64 < none -> 2.7.17-2ubuntu4 @un uN Ib > FU=0
       Removing: python-minimal
        MarkDelete python-minimal:amd64 < 2.7.15~rc1-1 @ii mK > FU=0
    Installing libpython2-stdlib as Dépend of python2
      MarkInstall libpython2-stdlib:amd64 < none -> 2.7.17-2ubuntu4 @un uN Ib > FU=0
       Removing: libpython-stdlib
        MarkDelete libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii mK > FU=0
     Removing: python
      MarkDelete python:amd64 < 2.7.15~rc1-1 @ii mK Ib > FU=0
Starting pkgProblemResolver with broken count: 2
Starting 2 pkgProblemResolver with broken count: 2
Investigating (0) python-dbg:amd64 < 2.7.15~rc1-1 @ii mK Ib >
Broken python-dbg:amd64 Dépend on python:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python:amd64 6 as a solution to python-dbg:amd64 10
  Added python:amd64 to the remove list
  Fixing python-dbg:amd64 via keep of python:amd64
  MarkKeep python:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
Investigating (0) python:amd64 < 2.7.15~rc1-1 @ii gK Ib >
Broken python:amd64 Pré-Dépend on python-minimal:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python-minimal:amd64 0 as a solution to python:amd64 6
  Added python-minimal:amd64 to the remove list
Broken python:amd64 Dépend on libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering libpython-stdlib:amd64 0 as a solution to python:amd64 6
  Added libpython-stdlib:amd64 to the remove list
  Fixing python:amd64 via keep of python-minimal:amd64
  MarkKeep python-minimal:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
  Fixing python:amd64 via keep of libpython-stdlib:amd64
  MarkKeep libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
Investigating (0) python2:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken python2:amd64 Casse on python:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering python:amd64 6 as a solution to python2:amd64 4
  MarkKeep python2:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib > FU=0
  Holding Back python2:amd64 rather than change python:amd64
Investigating (0) python2-minimal:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken python2-minimal:amd64 Casse on python-minimal:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering python-minimal:amd64 0 as a solution to python2-minimal:amd64 3
  Added python-minimal:amd64 to the remove list
  Fixing python2-minimal:amd64 via remove of python-minimal:amd64
  MarkDelete python-minimal:amd64 < 2.7.15~rc1-1 @ii gK > FU=0
Investigating (0) libpython2-stdlib:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken libpython2-stdlib:amd64 Casse on libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering libpython-stdlib:amd64 0 as a solution to libpython2-stdlib:amd64 3
  Added libpython-stdlib:amd64 to the remove list
  Fixing libpython2-stdlib:amd64 via remove of libpython-stdlib:amd64
  MarkDelete libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gK > FU=0
Investigating (0) python-all:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib >
Broken python-all:amd64 Dépend on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH > (= 2.7.17-2ubuntu4)
  Considering python2:amd64 4 as a solution to python-all:amd64 1
  MarkKeep python-all:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib > FU=0
  Holding Back python-all:amd64 rather than change python2:amd64
Investigating (0) python-all-dbg:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib >
Broken python-all-dbg:amd64 Dépend on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH > (= 2.7.17-2ubuntu4)
  Considering python2:amd64 4 as a solution to python-all-dbg:amd64 0
  MarkKeep python-all-dbg:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib > FU=0
  Holding Back python-all-dbg:amd64 rather than change python2:amd64
Investigating (1) python-is-python2:amd64 < none -> 2.7.17-4 @un pumN Ib >
Broken python-is-python2:amd64 Dépend on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH >
  Considering python2:amd64 4 as a solution to python-is-python2:amd64 9999
  Re-Instated python2:amd64
Broken python-is-python2:amd64 Casse on python:amd64 < 2.7.15~rc1-1 @ii gK Ib >
  Considering python:amd64 6 as a solution to python-is-python2:amd64 9999
  Added python:amd64 to the remove list
  Fixing python-is-python2:amd64 via remove of python:amd64
  MarkDelete python:amd64 < 2.7.15~rc1-1 @ii gK Ib > FU=0
Investigating (1) python-dbg:amd64 < 2.7.15~rc1-1 @ii mK Ib >
Broken python-dbg:amd64 Dépend on python:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python:amd64 6 as a solution to python-dbg:amd64 10
  Added python:amd64 to the remove list
  Fixing python-dbg:amd64 via keep of python:amd64
  MarkKeep python:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
Investigating (1) python:amd64 < 2.7.15~rc1-1 @ii gK Ib >
Broken python:amd64 Pré-Dépend on python-minimal:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python-minimal:amd64 0 as a solution to python:amd64 6
  Added python-minimal:amd64 to the remove list
Broken python:amd64 Dépend on libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering libpython-stdlib:amd64 0 as a solution to python:amd64 6
  Added libpython-stdlib:amd64 to the remove list
  Fixing python:amd64 via keep of python-minimal:amd64
  MarkKeep python-minimal:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
  Fixing python:amd64 via keep of libpython-stdlib:amd64
  MarkKeep libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
Investigating (1) python2:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken python2:amd64 Casse on python:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering python:amd64 6 as a solution to python2:amd64 4
  MarkKeep python2:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib > FU=0
  Holding Back python2:amd64 rather than change python:amd64
Investigating (1) python2-minimal:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken python2-minimal:amd64 Casse on python-minimal:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering python-minimal:amd64 0 as a solution to python2-minimal:amd64 3
  Added python-minimal:amd64 to the remove list
  Fixing python2-minimal:amd64 via remove of python-minimal:amd64
  MarkDelete python-minimal:amd64 < 2.7.15~rc1-1 @ii gK > FU=0
Investigating (1) libpython2-stdlib:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken libpython2-stdlib:amd64 Casse on libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering libpython-stdlib:amd64 0 as a solution to libpython2-stdlib:amd64 3
  Added libpython-stdlib:amd64 to the remove list
  Fixing libpython2-stdlib:amd64 via remove of libpython-stdlib:amd64
  MarkDelete libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gK > FU=0
 Try to Re-Instate (1) python-all:amd64
  MarkKeep python-all:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib > FU=0
 Try to Re-Instate (1) python-all-dbg:amd64
  MarkKeep python-all-dbg:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib > FU=0
Investigating (2) python-is-python2:amd64 < none -> 2.7.17-4 @un pumN Ib >
Broken python-is-python2:amd64 Dépend on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH >
  Considering python2:amd64 4 as a solution to python-is-python2:amd64 9999
Broken python-is-python2:amd64 Casse on python:amd64 < 2.7.15~rc1-1 @ii gK Ib >
  Considering python:amd64 6 as a solution to python-is-python2:amd64 9999
  Added python:amd64 to the remove list
  Fixing python-is-python2:amd64 via remove of python:amd64
  MarkDelete python:amd64 < 2.7.15~rc1-1 @ii gK Ib > FU=0
Investigating (2) python-dbg:amd64 < 2.7.15~rc1-1 @ii mK Ib >
Broken python-dbg:amd64 Dépend on python:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python:amd64 9999 as a solution to python-dbg:amd64 10
  Removing python-dbg:amd64 rather than change python:amd64
  MarkDelete python-dbg:amd64 < 2.7.15~rc1-1 @ii mK Ib > FU=0
Investigating (2) python-all:amd64 < 2.7.15~rc1-1 | 2.7.17-2ubuntu4 @ii umH Ib >
Broken python-all:amd64 Dépend on python:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python:amd64 9999 as a solution to python-all:amd64 1
  Removing python-all:amd64 rather than change python:amd64
  MarkDelete python-all:amd64 < 2.7.15~rc1-1 | 2.7.17-2ubuntu4 @ii umH Ib > FU=0
Investigating (2) python-numpy-dbg:amd64 < 1:1.13.3-2ubuntu1 | 1:1.16.5-2ubuntu7 @ii umH Ib >
Broken python-numpy-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR >
  Considering python-dbg:amd64 9999 as a solution to python-numpy-dbg:amd64 0
    Reinst Failed because of python2:amd64
  MarkKeep python2-dbg:amd64 < none -> 2.7.17-2ubuntu4 @un uN Ib > FU=0
    Reinst Failed because of python2-dbg:amd64
  MarkKeep python-numpy-dbg:amd64 < 1:1.13.3-2ubuntu1 -> 1:1.16.5-2ubuntu7 @ii umU Ib > FU=0
  Removing python-numpy-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-numpy-dbg:amd64 < 1:1.13.3-2ubuntu1 | 1:1.16.5-2ubuntu7 @ii umH Ib > FU=0
Investigating (2) python-pil-dbg:amd64 < 5.1.0-1ubuntu0.3 | 6.2.1-3 @ii umH Ib >
Broken python-pil-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR >
  Considering python-dbg:amd64 9999 as a solution to python-pil-dbg:amd64 0
    Reinst Failed because of python2:amd64
  MarkKeep python-pil:amd64 < 5.1.0-1ubuntu0.3 -> 6.2.1-3 @ii umU Ib > FU=0
    Reinst Failed because of python-pil:amd64
  MarkKeep python-pil-dbg:amd64 < 5.1.0-1ubuntu0.3 -> 6.2.1-3 @ii umU Ib > FU=0
  Removing python-pil-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-pil-dbg:amd64 < 5.1.0-1ubuntu0.3 | 6.2.1-3 @ii umH Ib > FU=0
Investigating (2) python-all-dbg:amd64 < 2.7.15~rc1-1 | 2.7.17-2ubuntu4 @ii umH Ib >
Broken python-all-dbg:amd64 Dépend on python:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python:amd64 9999 as a solution to python-all-dbg:amd64 0
  Removing python-all-dbg:amd64 rather than change python:amd64
  MarkDelete python-all-dbg:amd64 < 2.7.15~rc1-1 | 2.7.17-2ubuntu4 @ii umH Ib > FU=0
Investigating (2) python-gobject-2-dbg:amd64 < 2.28.6-12ubuntu3 | 2.28.6-14ubuntu1 @ii umH Ib >
Broken python-gobject-2-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR > (< 2.8)
  Considering python-dbg:amd64 9999 as a solution to python-gobject-2-dbg:amd64 0
    Reinst Failed because of python2:amd64
  MarkKeep python-gobject-2:amd64 < 2.28.6-12ubuntu3 -> 2.28.6-14ubuntu1 @ii umU Ib > FU=0
    Reinst Failed because of python-gobject-2:amd64
  MarkKeep python-gobject-2-dbg:amd64 < 2.28.6-12ubuntu3 -> 2.28.6-14ubuntu1 @ii umU Ib > FU=0
  Removing python-gobject-2-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-gobject-2-dbg:amd64 < 2.28.6-12ubuntu3 | 2.28.6-14ubuntu1 @ii umH Ib > FU=0
Investigating (2) python-cairo-dbg:amd64 < 1.16.2-1 | 1.16.2-2ubuntu2 @ii umH Ib >
Broken python-cairo-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR >
  Considering python-dbg:amd64 9999 as a solution to python-cairo-dbg:amd64 0
    Reinst Failed because of python2:amd64
  MarkKeep python-cairo:amd64 < 1.16.2-1 -> 1.16.2-2ubuntu2 @ii umU Ib > FU=0
    Reinst Failed because of python-cairo:amd64
  MarkKeep python-cairo-dbg:amd64 < 1.16.2-1 -> 1.16.2-2ubuntu2 @ii umU Ib > FU=0
  Removing python-cairo-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-cairo-dbg:amd64 < 1.16.2-1 | 1.16.2-2ubuntu2 @ii umH Ib > FU=0
Investigating (2) python-tk-dbg:amd64 < 2.7.17-1~18.04 | 2.7.18-1 @ii umH Ib >
Broken python-tk-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR > (>= 2.7)
  Considering python-dbg:amd64 9999 as a solution to python-tk-dbg:amd64 -1
    Reinst Failed because of python2-dbg:amd64
  MarkKeep python-tk-dbg:amd64 < 2.7.17-1~18.04 -> 2.7.18-1 @ii umU Ib > FU=0
  Removing python-tk-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-tk-dbg:amd64 < 2.7.17-1~18.04 | 2.7.18-1 @ii umH Ib > FU=0
Investigating (2) python-gtk2-dbg:amd64 < 2.24.0-5.1ubuntu2 @ii mK Ib >
Broken python-gtk2-dbg:amd64 Dépend on python-numpy-dbg:amd64 < 1:1.13.3-2ubuntu1 | 1:1.16.5-2ubuntu7 @ii umR >
  Considering python-numpy-dbg:amd64 9999 as a solution to python-gtk2-dbg:amd64 -2
  Removing python-gtk2-dbg:amd64 rather than change python-numpy-dbg:amd64
  MarkDelete python-gtk2-dbg:amd64 < 2.24.0-5.1ubuntu2 @ii mK Ib > FU=0
Investigating (2) python-matplotlib-dbg:amd64 < 2.1.1-2ubuntu3 @ii mK Ib >
Broken python-matplotlib-dbg:amd64 Dépend on python-all-dbg:amd64 < 2.7.15~rc1-1 | 2.7.17-2ubuntu4 @ii umR >
  Considering python-all-dbg:amd64 9999 as a solution to python-matplotlib-dbg:amd64 -2
  Removing python-matplotlib-dbg:amd64 rather than change python-all-dbg:amd64
  MarkDelete python-matplotlib-dbg:amd64 < 2.1.1-2ubuntu3 @ii mK Ib > FU=0
Investigating (2) python-sane-dbg:amd64 < 2.8.3-1build3 @ii mK Ib >
Broken python-sane-dbg:amd64 Dépend on python-pil-dbg:amd64 < 5.1.0-1ubuntu0.3 | 6.2.1-3 @ii umR > (>= 2.7.0)
  Considering python-pil-dbg:amd64 9999 as a solution to python-sane-dbg:amd64 -2
  Removing python-sane-dbg:amd64 rather than change python-pil-dbg:amd64
  MarkDelete python-sane-dbg:amd64 < 2.8.3-1build3 @ii mK Ib > FU=0
Investigating (2) python-mysqldb-dbg:amd64 < 1.3.10-1build1 @ii mK Ib >
Broken python-mysqldb-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR >
  Considering python-dbg:amd64 9999 as a solution to python-mysqldb-dbg:amd64 -2
  Removing python-mysqldb-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-mysqldb-dbg:amd64 < 1.3.10-1build1 @ii mK Ib > FU=0
Investigating (3) python-is-python2:amd64 < none -> 2.7.17-4 @un pumN Ib >
Broken python-is-python2:amd64 Dépend on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH >
  Considering python2:amd64 4 as a solution to python-is-python2:amd64 9999
Done
Log time: 2020-10-09 13:52:05.690709

Et main.log:

cat /var/log/dist-upgrade/main.log
2020-10-09 13:50:42,501 INFO Using config files '['./DistUpgrade.cfg.bionic']'
2020-10-09 13:50:42,501 INFO uname information: 'Linux thomas-K53SD 4.15.0-118-generic #119-Ubuntu SMP Tue Sep 8 12:30:01 UTC 2020 x86_64'
2020-10-09 13:50:43,027 INFO apt version: '1.6.12ubuntu0.1'
2020-10-09 13:50:43,027 INFO python version: '3.6.9 (default, Jul 17 2020, 12:50:27) 
[GCC 8.4.0]'
2020-10-09 13:50:43,032 INFO release-upgrader version '20.04.25' started
2020-10-09 13:50:43,130 INFO locale: 'fr_FR' 'UTF-8'
2020-10-09 13:50:43,568 DEBUG Using 'DistUpgradeViewGtk3' view
2020-10-09 13:50:43,627 DEBUG enable dpkg --force-overwrite
2020-10-09 13:50:43,687 DEBUG creating statefile: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
2020-10-09 13:50:50,495 DEBUG lsb-release: 'bionic'
2020-10-09 13:50:50,496 DEBUG _pythonSymlinkCheck run
2020-10-09 13:50:50,505 DEBUG openCache()
2020-10-09 13:50:50,505 DEBUG quirks: running PreCacheOpen
2020-10-09 13:50:50,505 DEBUG running Quirks.PreCacheOpen
2020-10-09 13:50:52,275 DEBUG Comparing 4.15.0-117 with 
2020-10-09 13:50:52,276 DEBUG Comparing 4.15.0-118 with 4.15.0-117
2020-10-09 13:50:52,772 DEBUG /openCache(), new cache size 100001
2020-10-09 13:50:52,773 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2020-10-09 13:50:52,773 DEBUG checkViewDepends()
2020-10-09 13:50:52,778 DEBUG running doUpdate() (showErrors=False)
2020-10-09 13:50:56,578 DEBUG openCache()
2020-10-09 13:50:58,328 DEBUG Comparing 4.15.0-117 with 
2020-10-09 13:50:58,329 DEBUG Comparing 4.15.0-118 with 4.15.0-117
2020-10-09 13:50:58,816 DEBUG /openCache(), new cache size 100001
2020-10-09 13:50:58,816 DEBUG doPostInitialUpdate
2020-10-09 13:50:58,817 DEBUG quirks: running focalPostInitialUpdate
2020-10-09 13:50:58,817 DEBUG running Quirks.focalPostInitialUpdate
2020-10-09 13:51:01,359 DEBUG Snap core18 is installed
2020-10-09 13:51:01,803 DEBUG Snap gtk-common-themes is installed
2020-10-09 13:51:02,191 DEBUG Snap gnome-3-28-1804 is installed
2020-10-09 13:51:02,191 DEBUG Snap gnome-3-28-1804 is not tracking the release channel
2020-10-09 13:51:02,420 DEBUG Snap gnome-calculator is installed
2020-10-09 13:51:02,677 DEBUG Snap gnome-characters is installed
2020-10-09 13:51:02,923 DEBUG Snap gnome-logs is installed
2020-10-09 13:51:07,313 DEBUG MetaPkgs: ubuntu-desktop
2020-10-09 13:51:13,709 DEBUG Foreign: 
2020-10-09 13:51:13,709 DEBUG Obsolete: 
2020-10-09 13:51:13,710 DEBUG updateSourcesList()
2020-10-09 13:51:13,720 DEBUG rewriteSourcesList() with mirror_check
2020-10-09 13:51:13,723 DEBUG ['ubuntu-minimal', 'ubuntu-standard']
2020-10-09 13:51:13,723 DEBUG Checking pkg: ubuntu-minimal
2020-10-09 13:51:13,726 DEBUG Checking pkg: ubuntu-standard
2020-10-09 13:51:13,728 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic main restricted'
2020-10-09 13:51:13,728 DEBUG verifySourcesListEntry: deb http://fr.archive.ubuntu.com/ubuntu/ focal main restricted
2020-10-09 13:51:13,728 DEBUG url_downloadable: http://fr.archive.ubuntu.com/ubuntu//dists/focal/Release
2020-10-09 13:51:13,728 DEBUG s='http' n='fr.archive.ubuntu.com' p='/ubuntu//dists/focal/Release' q='' f=''
2020-10-09 13:51:13,747 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal main restricted' updated to new dist
2020-10-09 13:51:13,748 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic main restricted'
2020-10-09 13:51:13,748 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal main restricted' updated to new dist
2020-10-09 13:51:13,748 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-updates main restricted'
2020-10-09 13:51:13,748 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-updates main restricted' updated to new dist
2020-10-09 13:51:13,748 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-updates main restricted'
2020-10-09 13:51:13,748 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-updates main restricted' updated to new dist
2020-10-09 13:51:13,749 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic universe'
2020-10-09 13:51:13,749 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal universe' updated to new dist
2020-10-09 13:51:13,749 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic universe'
2020-10-09 13:51:13,749 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal universe' updated to new dist
2020-10-09 13:51:13,749 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-updates universe'
2020-10-09 13:51:13,749 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-updates universe' updated to new dist
2020-10-09 13:51:13,749 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-updates universe'
2020-10-09 13:51:13,749 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-updates universe' updated to new dist
2020-10-09 13:51:13,750 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic multiverse'
2020-10-09 13:51:13,750 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal multiverse' updated to new dist
2020-10-09 13:51:13,750 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic multiverse'
2020-10-09 13:51:13,750 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal multiverse' updated to new dist
2020-10-09 13:51:13,750 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-updates multiverse'
2020-10-09 13:51:13,750 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-updates multiverse' updated to new dist
2020-10-09 13:51:13,750 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-updates multiverse'
2020-10-09 13:51:13,750 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-updates multiverse' updated to new dist
2020-10-09 13:51:13,751 DEBUG examining: 'deb http://archive.canonical.com/ubuntu bionic partner'
2020-10-09 13:51:13,751 DEBUG verifySourcesListEntry: deb http://archive.canonical.com/ubuntu focal partner
2020-10-09 13:51:13,751 DEBUG url_downloadable: http://archive.canonical.com/ubuntu/dists/focal/Release
2020-10-09 13:51:13,751 DEBUG s='http' n='archive.canonical.com' p='/ubuntu/dists/focal/Release' q='' f=''
2020-10-09 13:51:13,938 DEBUG entry 'deb http://archive.canonical.com/ubuntu focal partner' updated to new dist
2020-10-09 13:51:13,938 DEBUG examining: 'deb-src http://archive.canonical.com/ubuntu bionic partner'
2020-10-09 13:51:13,938 DEBUG entry 'deb-src http://archive.canonical.com/ubuntu focal partner' updated to new dist
2020-10-09 13:51:13,938 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-security main restricted'
2020-10-09 13:51:13,938 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-security main restricted' updated to new dist
2020-10-09 13:51:13,938 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-security main restricted'
2020-10-09 13:51:13,939 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-security main restricted' updated to new dist
2020-10-09 13:51:13,939 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-security universe'
2020-10-09 13:51:13,939 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-security universe' updated to new dist
2020-10-09 13:51:13,939 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-security universe'
2020-10-09 13:51:13,939 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-security universe' updated to new dist
2020-10-09 13:51:13,939 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-security multiverse'
2020-10-09 13:51:13,939 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-security multiverse' updated to new dist
2020-10-09 13:51:13,939 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-security multiverse'
2020-10-09 13:51:13,939 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-security multiverse' updated to new dist
2020-10-09 13:51:13,942 DEBUG running doUpdate() (showErrors=True)
2020-10-09 13:51:40,617 DEBUG openCache()
2020-10-09 13:51:41,881 DEBUG Comparing 4.15.0-117 with 
2020-10-09 13:51:41,882 DEBUG Comparing 4.15.0-118 with 4.15.0-117
2020-10-09 13:51:42,191 DEBUG /openCache(), new cache size 67074
2020-10-09 13:51:42,191 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2020-10-09 13:51:42,192 DEBUG quirks: running PreDistUpgradeCache
2020-10-09 13:51:42,192 DEBUG running Quirks.PreDistUpgradeCache
2020-10-09 13:51:42,192 INFO installing python-is-python2 because python-minimal was installed
2020-10-09 13:51:42,192 DEBUG Installing 'python-is-python2' (python-minimal was installed on the system)
2020-10-09 13:51:57,847 ERROR Dist-upgrade failed: 'E:Impossible de corriger les problèmes, des paquets défectueux sont en mode « garder en l'état ».'
2020-10-09 13:51:58,219 DEBUG abort called
2020-10-09 13:51:58,221 DEBUG openCache()
2020-10-09 13:52:05,200 DEBUG Comparing 4.15.0-117 with 
2020-10-09 13:52:05,200 DEBUG Comparing 4.15.0-118 with 4.15.0-117
2020-10-09 13:52:05,709 DEBUG /openCache(), new cache size 100001

geole

On est resté au même point.
Comme je dispose d'une version 18.04, voilà ce qui se passerait si on supprimait python2

sudo apt remove --simulate --purge python2.7
[sudo] Mot de passe de a : 
Lecture des listes de paquets... Fait
Construction de l'arbre des dépendances       
Lecture des informations d'état... Fait
Les paquets suivants ont été installés automatiquement et ne sont plus nécessaires :
  gir1.2-nautilus-3.0 libglade2-0 libllvm9 libpython-stdlib librsync1 python-minimal python2.7-minimal
Veuillez utiliser « sudo apt autoremove » pour les supprimer.
Les paquets suivants seront ENLEVÉS :
  duplicity* folder-color* folder-color-common* ntfs-config* python* python-cairo* python-fasteners* python-gi* python-glade2* python-gobject-2* python-gtk2*
  python-lockfile* python-monotonic* python-nautilus* python-six* python2.7*
0 mis à jour, 0 nouvellement installés, 16 à enlever et 7 non mis à jour.

nautilus casserait certainement, donc plus de mode graphique...Alors pour le moment, je pense qu'il est préférable de temporiser un peu.
Je vais regarder ma dernière mise à niveau, je pense qu'il y avait du python2

AJOUT. Pendant que je cherchais, je viens de recevoir une notification que la mise a niveau était disponible. Je l'accepte!

Voici un extrait de ta trace

2020-10-09 13:51:40,617 DEBUG openCache()
2020-10-09 13:51:41,881 DEBUG Comparing 4.15.0-117 with 
2020-10-09 13:51:41,882 DEBUG Comparing 4.15.0-118 with 4.15.0-117
2020-10-09 13:51:42,191 DEBUG /openCache(), new cache size 67074
2020-10-09 13:51:42,191 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2020-10-09 13:51:42,192 DEBUG quirks: running PreDistUpgradeCache
2020-10-09 13:51:42,192 DEBUG running Quirks.PreDistUpgradeCache
2020-10-09 13:51:42,192 INFO installing python-is-python2 because python-minimal was installed
2020-10-09 13:51:42,192 DEBUG Installing 'python-is-python2' (python-minimal was installed on the system)
2020-10-09 13:51:57,847 ERROR Dist-upgrade failed: 'E:Impossible de corriger les problèmes, des paquets défectueux sont en mode « garder en l'état ».'

le même extrait de mon passage que j ai stoppé car c était accepté

2020-10-09 17:14:36,275 DEBUG openCache()
2020-10-09 17:14:37,519 DEBUG Comparing 4.15.0-112 with 
2020-10-09 17:14:37,519 DEBUG Comparing 4.15.0-118 with 4.15.0-112
2020-10-09 17:14:37,520 DEBUG Comparing 4.15.0-38 with 4.15.0-118
2020-10-09 17:14:37,520 DEBUG Comparing 4.15.0-45 with 4.15.0-118
2020-10-09 17:14:37,806 DEBUG /openCache(), new cache size 66404
2020-10-09 17:14:37,806 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2020-10-09 17:14:37,807 DEBUG quirks: running PreDistUpgradeCache
2020-10-09 17:14:37,807 DEBUG running Quirks.PreDistUpgradeCache
2020-10-09 17:14:37,807 INFO installing python-is-python2 because python-minimal was installed
2020-10-09 17:14:37,807 DEBUG Installing 'python-is-python2' (python-minimal was installed on the system)
2020-10-09 17:14:37,832 INFO removing python-minimal because python-is-python2 is being installed
2020-10-09 17:14:37,832 DEBUG Removing 'python-minimal' (python-is-python2 is being installed on the system)
2020-10-09 17:14:37,832 INFO failed to remove python-minimal
2020-10-09 17:14:39,451 ERROR Package net.downloadhelper.coapp has no priority set
2020-10-09 17:14:39,940 DEBUG Running KeepInstalledSection rules
2020-10-09 17:14:41,198 DEBUG Kernel uname: '4.15.0-118-generic' 
2020-10-09 17:14:41,218 DEBUG nvidiaUpdate()
2020-10-09 17:14:42,744 ERROR NvidiaDetection returned a error: invalid literal for int() with base 10: 'server'
2020-10-09 17:14:42,750 DEBUG Removing 'gnome-cups-manager' (ubuntu-desktop PostUpgradeRemove rule)
2020-10-09 17:14:42,750 DEBUG Removing 'powermanagement-interface' (ubuntu-desktop PostUpgradeRemove rule)
2020-10-09 17:14:42,750 DEBUG Removing 'deskbar-applet' (ubuntu-desktop PostUpgradeRemove rule)
2020-10-09 17:14:42,750 DEBUG Removing 'nautilus-cd-burner' (ubuntu-desktop PostUpgradeRemove rule)
2020-10-09 17:14:42,751 DEBUG quirks: running PostDistUpgradeCache
2020-10-09 17:14:42,751 DEBUG running Quirks.PostDistUpgradeCache

on voit bien que python2.7 ne pose pas de problèmes
C est donc un "module" de 2.7 qui pose problème.

a@a:/var/log/dist-upgrade$ sudo apt remove --simulate --purge python2.7
[sudo] Mot de passe de a : 
Lecture des listes de paquets... Fait
Construction de l'arbre des dépendances       
Lecture des informations d'état... Fait
Les paquets suivants ont été installés automatiquement et ne sont plus nécessaires :
  gir1.2-nautilus-3.0 libglade2-0 libllvm9 libpython-stdlib librsync1 python-minimal python2.7-minimal
Veuillez utiliser « sudo apt autoremove » pour les supprimer.
Les paquets suivants seront ENLEVÉS :
  duplicity* folder-color* folder-color-common* ntfs-config* python* python-cairo* python-fasteners* python-gi* python-glade2* python-gobject-2* python-gtk2*
  python-lockfile* python-monotonic* python-nautilus* python-six* python2.7*
0 mis à jour, 0 nouvellement installés, 16 à enlever et 4 non mis à jour.
Purg duplicity [0.7.17-0ubuntu1.1]
Purg folder-color [0.0.86-0ubuntu1]
Purg folder-color-common [0.0.86-0ubuntu1]
Purg ntfs-config [1.0.1-11]
Purg python-nautilus [1.1-6]
Purg python-gi [3.26.1-2ubuntu1]
Purg python-glade2 [2.24.0-5.1ubuntu2]
Purg python-gtk2 [2.24.0-5.1ubuntu2]
Purg python-gobject-2 [2.28.6-12ubuntu3]
Purg python-fasteners [0.12.0-3]
Purg python-six [1.11.0-2]
Purg python [2.7.15~rc1-1] [python-monotonic:amd64 python-cairo:amd64 python-lockfile:amd64 ]
Purg python-cairo [1.16.2-1] [python-monotonic:amd64 python-lockfile:amd64 ]
Purg python-lockfile [1:0.12.2-2] [python-monotonic:amd64 ]
Purg python-monotonic [1.1-2]
Purg python2.7 [2.7.17-1~18.04ubuntu1.1]
a@a:/var/log/dist-upgrade

geole

Peux-tu donner le retour de cette commande afin de pouvoir comparer

sudo apt remove --simulate --purge python2.7

sudo apt remove --simulate --purge python-all-dbg

sudo apt remove --simulate --purge python

sudo apt remove --simulate --purge python

Mais je viens de comprendre le problème.

Cela ne met pas en route à cause de ce message

starting pkgProblemResolver with broken count: 2
Starting 2 pkgProblemResolver with broken count: 2
Investigating (0) python-dbg:amd64 < 2.7.15~rc1-1 @ii mK Ib >
Investigating (0) python:amd64 < 2.7.15~rc1-1 @ii gK I

geole

Merci de donner le retour de ces deux commandes

  sudo apt install     --reinstall    --fix-missing    --fix-broken    python-dbg 
  sudo apt install     --reinstall    --fix-missing    --fix-broken    python

Si elles se déroulent bien, Tu pourras retenter la mise à niveau.

zigroful1

sudo apt install     --reinstall    --fix-missing    --fix-broken    python-dbg
[sudo] Mot de passe de thomas : 
Lecture des listes de paquets... Fait
Construction de l'arbre des dépendances       
Lecture des informations d'état... Fait
0 mis à jour, 0 nouvellement installés, 1 réinstallés, 0 à enlever et 0 non mis à jour.
Il est nécessaire de prendre 1340 o dans les archives.
Après cette opération, 0 o d'espace disque supplémentaires seront utilisés.
Réception de :1 http://fr.archive.ubuntu.com/ubuntu bionic/main amd64 python-dbg amd64 2.7.15~rc1-1 [1340 B]
1340 o réceptionnés en 0s (14,5 ko/s)     
(Lecture de la base de données... 351703 fichiers et répertoires déjà installés.)
Préparation du dépaquetage de .../python-dbg_2.7.15~rc1-1_amd64.deb ...
Dépaquetage de python-dbg (2.7.15~rc1-1) sur (2.7.15~rc1-1) ...
Paramétrage de python-dbg (2.7.15~rc1-1) ...
Traitement des actions différées (« triggers ») pour man-db (2.8.3-2ubuntu0.1) ...

sudo apt install     --reinstall    --fix-missing    --fix-broken    python 
Lecture des listes de paquets... Fait
Construction de l'arbre des dépendances       
Lecture des informations d'état... Fait
0 mis à jour, 0 nouvellement installés, 1 réinstallés, 0 à enlever et 0 non mis à jour.
Il est nécessaire de prendre 140 ko dans les archives.
Après cette opération, 0 o d'espace disque supplémentaires seront utilisés.
Réception de :1 http://fr.archive.ubuntu.com/ubuntu bionic/main amd64 python amd64 2.7.15~rc1-1 [140 kB]
140 ko réceptionnés en 0s (2396 ko/s)
(Lecture de la base de données... 351703 fichiers et répertoires déjà installés.)
Préparation du dépaquetage de .../python_2.7.15~rc1-1_amd64.deb ...
Dépaquetage de python (2.7.15~rc1-1) sur (2.7.15~rc1-1) ...
Paramétrage de python (2.7.15~rc1-1) ...
Traitement des actions différées (« triggers ») pour man-db (2.8.3-2ubuntu0.1) ...
Traitement des actions différées (« triggers ») pour doc-base (0.10.8) ...
Traitement de 1 fichier de documentation modifié…
Enregistrement des documents avec scrollkeeper…

zigroful1

et voici mail.log et apt.log :

cat /var/log/dist-upgrade/main.log
2020-10-09 19:21:41,438 INFO Using config files '['./DistUpgrade.cfg.bionic']'
2020-10-09 19:21:41,438 INFO uname information: 'Linux thomas-K53SD 4.15.0-118-generic #119-Ubuntu SMP Tue Sep 8 12:30:01 UTC 2020 x86_64'
2020-10-09 19:21:41,941 INFO apt version: '1.6.12ubuntu0.1'
2020-10-09 19:21:41,941 INFO python version: '3.6.9 (default, Jul 17 2020, 12:50:27) 
[GCC 8.4.0]'
2020-10-09 19:21:41,945 INFO release-upgrader version '20.04.25' started
2020-10-09 19:21:42,012 INFO locale: 'fr_FR' 'UTF-8'
2020-10-09 19:21:42,361 DEBUG Using 'DistUpgradeViewGtk3' view
2020-10-09 19:21:42,417 DEBUG enable dpkg --force-overwrite
2020-10-09 19:21:42,438 DEBUG creating statefile: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
2020-10-09 19:21:48,820 DEBUG lsb-release: 'bionic'
2020-10-09 19:21:48,821 DEBUG _pythonSymlinkCheck run
2020-10-09 19:21:48,849 DEBUG openCache()
2020-10-09 19:21:48,849 DEBUG quirks: running PreCacheOpen
2020-10-09 19:21:48,849 DEBUG running Quirks.PreCacheOpen
2020-10-09 19:21:50,441 DEBUG Comparing 4.15.0-117 with 
2020-10-09 19:21:50,441 DEBUG Comparing 4.15.0-118 with 4.15.0-117
2020-10-09 19:21:50,900 DEBUG /openCache(), new cache size 100001
2020-10-09 19:21:50,901 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2020-10-09 19:21:50,901 DEBUG checkViewDepends()
2020-10-09 19:21:50,905 DEBUG running doUpdate() (showErrors=False)
2020-10-09 19:21:55,433 DEBUG openCache()
2020-10-09 19:21:57,047 DEBUG Comparing 4.15.0-117 with 
2020-10-09 19:21:57,047 DEBUG Comparing 4.15.0-118 with 4.15.0-117
2020-10-09 19:21:57,534 DEBUG /openCache(), new cache size 100001
2020-10-09 19:21:57,534 DEBUG doPostInitialUpdate
2020-10-09 19:21:57,534 DEBUG quirks: running focalPostInitialUpdate
2020-10-09 19:21:57,535 DEBUG running Quirks.focalPostInitialUpdate
2020-10-09 19:22:00,135 DEBUG Snap core18 is installed
2020-10-09 19:22:00,633 DEBUG Snap gtk-common-themes is installed
2020-10-09 19:22:01,254 DEBUG Snap gnome-3-28-1804 is installed
2020-10-09 19:22:01,279 DEBUG Snap gnome-3-28-1804 is not tracking the release channel
2020-10-09 19:22:01,497 DEBUG Snap gnome-calculator is installed
2020-10-09 19:22:01,776 DEBUG Snap gnome-characters is installed
2020-10-09 19:22:02,088 DEBUG Snap gnome-logs is installed
2020-10-09 19:22:06,139 DEBUG MetaPkgs: ubuntu-desktop
2020-10-09 19:22:12,239 DEBUG Foreign: 
2020-10-09 19:22:12,239 DEBUG Obsolete: 
2020-10-09 19:22:12,240 DEBUG updateSourcesList()
2020-10-09 19:22:12,249 DEBUG rewriteSourcesList() with mirror_check
2020-10-09 19:22:12,252 DEBUG ['ubuntu-minimal', 'ubuntu-standard']
2020-10-09 19:22:12,253 DEBUG Checking pkg: ubuntu-minimal
2020-10-09 19:22:12,255 DEBUG Checking pkg: ubuntu-standard
2020-10-09 19:22:12,257 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic main restricted'
2020-10-09 19:22:12,257 DEBUG verifySourcesListEntry: deb http://fr.archive.ubuntu.com/ubuntu/ focal main restricted
2020-10-09 19:22:12,258 DEBUG url_downloadable: http://fr.archive.ubuntu.com/ubuntu//dists/focal/Release
2020-10-09 19:22:12,258 DEBUG s='http' n='fr.archive.ubuntu.com' p='/ubuntu//dists/focal/Release' q='' f=''
2020-10-09 19:22:12,298 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal main restricted' updated to new dist
2020-10-09 19:22:12,299 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic main restricted'
2020-10-09 19:22:12,299 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal main restricted' updated to new dist
2020-10-09 19:22:12,300 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-updates main restricted'
2020-10-09 19:22:12,300 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-updates main restricted' updated to new dist
2020-10-09 19:22:12,300 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-updates main restricted'
2020-10-09 19:22:12,300 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-updates main restricted' updated to new dist
2020-10-09 19:22:12,301 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic universe'
2020-10-09 19:22:12,301 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal universe' updated to new dist
2020-10-09 19:22:12,301 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic universe'
2020-10-09 19:22:12,301 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal universe' updated to new dist
2020-10-09 19:22:12,302 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-updates universe'
2020-10-09 19:22:12,302 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-updates universe' updated to new dist
2020-10-09 19:22:12,302 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-updates universe'
2020-10-09 19:22:12,302 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-updates universe' updated to new dist
2020-10-09 19:22:12,302 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic multiverse'
2020-10-09 19:22:12,303 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal multiverse' updated to new dist
2020-10-09 19:22:12,303 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic multiverse'
2020-10-09 19:22:12,303 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal multiverse' updated to new dist
2020-10-09 19:22:12,303 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-updates multiverse'
2020-10-09 19:22:12,304 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-updates multiverse' updated to new dist
2020-10-09 19:22:12,304 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-updates multiverse'
2020-10-09 19:22:12,304 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-updates multiverse' updated to new dist
2020-10-09 19:22:12,304 DEBUG examining: 'deb http://archive.canonical.com/ubuntu bionic partner'
2020-10-09 19:22:12,305 DEBUG verifySourcesListEntry: deb http://archive.canonical.com/ubuntu focal partner
2020-10-09 19:22:12,305 DEBUG url_downloadable: http://archive.canonical.com/ubuntu/dists/focal/Release
2020-10-09 19:22:12,305 DEBUG s='http' n='archive.canonical.com' p='/ubuntu/dists/focal/Release' q='' f=''
2020-10-09 19:22:12,339 DEBUG entry 'deb http://archive.canonical.com/ubuntu focal partner' updated to new dist
2020-10-09 19:22:12,340 DEBUG examining: 'deb-src http://archive.canonical.com/ubuntu bionic partner'
2020-10-09 19:22:12,340 DEBUG entry 'deb-src http://archive.canonical.com/ubuntu focal partner' updated to new dist
2020-10-09 19:22:12,341 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-security main restricted'
2020-10-09 19:22:12,341 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-security main restricted' updated to new dist
2020-10-09 19:22:12,341 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-security main restricted'
2020-10-09 19:22:12,342 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-security main restricted' updated to new dist
2020-10-09 19:22:12,342 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-security universe'
2020-10-09 19:22:12,342 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-security universe' updated to new dist
2020-10-09 19:22:12,343 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-security universe'
2020-10-09 19:22:12,343 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-security universe' updated to new dist
2020-10-09 19:22:12,343 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-security multiverse'
2020-10-09 19:22:12,343 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-security multiverse' updated to new dist
2020-10-09 19:22:12,344 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-security multiverse'
2020-10-09 19:22:12,344 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-security multiverse' updated to new dist
2020-10-09 19:22:12,352 DEBUG running doUpdate() (showErrors=True)
2020-10-09 19:22:35,184 DEBUG openCache()
2020-10-09 19:22:36,389 DEBUG Comparing 4.15.0-117 with 
2020-10-09 19:22:36,390 DEBUG Comparing 4.15.0-118 with 4.15.0-117
2020-10-09 19:22:36,697 DEBUG /openCache(), new cache size 67074
2020-10-09 19:22:36,698 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2020-10-09 19:22:36,699 DEBUG quirks: running PreDistUpgradeCache
2020-10-09 19:22:36,699 DEBUG running Quirks.PreDistUpgradeCache
2020-10-09 19:22:36,699 INFO installing python-is-python2 because python-minimal was installed
2020-10-09 19:22:36,699 DEBUG Installing 'python-is-python2' (python-minimal was installed on the system)
2020-10-09 19:22:43,021 ERROR Dist-upgrade failed: 'E:Impossible de corriger les problèmes, des paquets défectueux sont en mode « garder en l'état ».'
2020-10-09 19:22:43,024 DEBUG abort called
2020-10-09 19:22:43,025 DEBUG openCache()
2020-10-09 19:22:46,989 DEBUG Comparing 4.15.0-117 with 
2020-10-09 19:22:46,990 DEBUG Comparing 4.15.0-118 with 4.15.0-117
2020-10-09 19:22:47,469 DEBUG /openCache(), new cache size 100001
thomas@thomas-K53SD:~/Documents/BOURSE$ cat /var/log/dist-upgrade/apt.log
Log time: 2020-10-09 19:21:50.896453
Log time: 2020-10-09 19:21:57.519841
Log time: 2020-10-09 19:22:36.675786
  MarkInstall python-is-python2:amd64 < none -> 2.7.17-4 @un uN Ib > FU=1
  Installing python2 as Dépend of python-is-python2
    MarkInstall python2:amd64 < none -> 2.7.17-2ubuntu4 @un uN Ib > FU=0
    Installing python2-minimal as Pré-Dépend of python2
      MarkInstall python2-minimal:amd64 < none -> 2.7.17-2ubuntu4 @un uN Ib > FU=0
       Removing: python-minimal
        MarkDelete python-minimal:amd64 < 2.7.15~rc1-1 @ii mK > FU=0
    Installing libpython2-stdlib as Dépend of python2
      MarkInstall libpython2-stdlib:amd64 < none -> 2.7.17-2ubuntu4 @un uN Ib > FU=0
       Removing: libpython-stdlib
        MarkDelete libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii mK > FU=0
     Removing: python
      MarkDelete python:amd64 < 2.7.15~rc1-1 @ii mK Ib > FU=0
Starting pkgProblemResolver with broken count: 2
Starting 2 pkgProblemResolver with broken count: 2
Investigating (0) python-dbg:amd64 < 2.7.15~rc1-1 @ii mK Ib >
Broken python-dbg:amd64 Dépend on python:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python:amd64 6 as a solution to python-dbg:amd64 10
  Added python:amd64 to the remove list
  Fixing python-dbg:amd64 via keep of python:amd64
  MarkKeep python:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
Investigating (0) python:amd64 < 2.7.15~rc1-1 @ii gK Ib >
Broken python:amd64 Pré-Dépend on python-minimal:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python-minimal:amd64 0 as a solution to python:amd64 6
  Added python-minimal:amd64 to the remove list
Broken python:amd64 Dépend on libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering libpython-stdlib:amd64 0 as a solution to python:amd64 6
  Added libpython-stdlib:amd64 to the remove list
  Fixing python:amd64 via keep of python-minimal:amd64
  MarkKeep python-minimal:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
  Fixing python:amd64 via keep of libpython-stdlib:amd64
  MarkKeep libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
Investigating (0) python2:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken python2:amd64 Casse on python:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering python:amd64 6 as a solution to python2:amd64 4
  MarkKeep python2:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib > FU=0
  Holding Back python2:amd64 rather than change python:amd64
Investigating (0) python2-minimal:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken python2-minimal:amd64 Casse on python-minimal:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering python-minimal:amd64 0 as a solution to python2-minimal:amd64 3
  Added python-minimal:amd64 to the remove list
  Fixing python2-minimal:amd64 via remove of python-minimal:amd64
  MarkDelete python-minimal:amd64 < 2.7.15~rc1-1 @ii gK > FU=0
Investigating (0) libpython2-stdlib:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken libpython2-stdlib:amd64 Casse on libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering libpython-stdlib:amd64 0 as a solution to libpython2-stdlib:amd64 3
  Added libpython-stdlib:amd64 to the remove list
  Fixing libpython2-stdlib:amd64 via remove of libpython-stdlib:amd64
  MarkDelete libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gK > FU=0
Investigating (0) python-all:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib >
Broken python-all:amd64 Dépend on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH > (= 2.7.17-2ubuntu4)
  Considering python2:amd64 4 as a solution to python-all:amd64 1
  MarkKeep python-all:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib > FU=0
  Holding Back python-all:amd64 rather than change python2:amd64
Investigating (0) python-all-dbg:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib >
Broken python-all-dbg:amd64 Dépend on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH > (= 2.7.17-2ubuntu4)
  Considering python2:amd64 4 as a solution to python-all-dbg:amd64 0
  MarkKeep python-all-dbg:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib > FU=0
  Holding Back python-all-dbg:amd64 rather than change python2:amd64
Investigating (1) python-is-python2:amd64 < none -> 2.7.17-4 @un pumN Ib >
Broken python-is-python2:amd64 Dépend on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH >
  Considering python2:amd64 4 as a solution to python-is-python2:amd64 9999
  Re-Instated python2:amd64
Broken python-is-python2:amd64 Casse on python:amd64 < 2.7.15~rc1-1 @ii gK Ib >
  Considering python:amd64 6 as a solution to python-is-python2:amd64 9999
  Added python:amd64 to the remove list
  Fixing python-is-python2:amd64 via remove of python:amd64
  MarkDelete python:amd64 < 2.7.15~rc1-1 @ii gK Ib > FU=0
Investigating (1) python-dbg:amd64 < 2.7.15~rc1-1 @ii mK Ib >
Broken python-dbg:amd64 Dépend on python:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python:amd64 6 as a solution to python-dbg:amd64 10
  Added python:amd64 to the remove list
  Fixing python-dbg:amd64 via keep of python:amd64
  MarkKeep python:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
Investigating (1) python:amd64 < 2.7.15~rc1-1 @ii gK Ib >
Broken python:amd64 Pré-Dépend on python-minimal:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python-minimal:amd64 0 as a solution to python:amd64 6
  Added python-minimal:amd64 to the remove list
Broken python:amd64 Dépend on libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering libpython-stdlib:amd64 0 as a solution to python:amd64 6
  Added libpython-stdlib:amd64 to the remove list
  Fixing python:amd64 via keep of python-minimal:amd64
  MarkKeep python-minimal:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
  Fixing python:amd64 via keep of libpython-stdlib:amd64
  MarkKeep libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
Investigating (1) python2:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken python2:amd64 Casse on python:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering python:amd64 6 as a solution to python2:amd64 4
  MarkKeep python2:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib > FU=0
  Holding Back python2:amd64 rather than change python:amd64
Investigating (1) python2-minimal:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken python2-minimal:amd64 Casse on python-minimal:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering python-minimal:amd64 0 as a solution to python2-minimal:amd64 3
  Added python-minimal:amd64 to the remove list
  Fixing python2-minimal:amd64 via remove of python-minimal:amd64
  MarkDelete python-minimal:amd64 < 2.7.15~rc1-1 @ii gK > FU=0
Investigating (1) libpython2-stdlib:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken libpython2-stdlib:amd64 Casse on libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering libpython-stdlib:amd64 0 as a solution to libpython2-stdlib:amd64 3
  Added libpython-stdlib:amd64 to the remove list
  Fixing libpython2-stdlib:amd64 via remove of libpython-stdlib:amd64
  MarkDelete libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gK > FU=0
 Try to Re-Instate (1) python-all:amd64
  MarkKeep python-all:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib > FU=0
 Try to Re-Instate (1) python-all-dbg:amd64
  MarkKeep python-all-dbg:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib > FU=0
Investigating (2) python-is-python2:amd64 < none -> 2.7.17-4 @un pumN Ib >
Broken python-is-python2:amd64 Dépend on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH >
  Considering python2:amd64 4 as a solution to python-is-python2:amd64 9999
Broken python-is-python2:amd64 Casse on python:amd64 < 2.7.15~rc1-1 @ii gK Ib >
  Considering python:amd64 6 as a solution to python-is-python2:amd64 9999
  Added python:amd64 to the remove list
  Fixing python-is-python2:amd64 via remove of python:amd64
  MarkDelete python:amd64 < 2.7.15~rc1-1 @ii gK Ib > FU=0
Investigating (2) python-dbg:amd64 < 2.7.15~rc1-1 @ii mK Ib >
Broken python-dbg:amd64 Dépend on python:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python:amd64 9999 as a solution to python-dbg:amd64 10
  Removing python-dbg:amd64 rather than change python:amd64
  MarkDelete python-dbg:amd64 < 2.7.15~rc1-1 @ii mK Ib > FU=0
Investigating (2) python-all:amd64 < 2.7.15~rc1-1 | 2.7.17-2ubuntu4 @ii umH Ib >
Broken python-all:amd64 Dépend on python:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python:amd64 9999 as a solution to python-all:amd64 1
  Removing python-all:amd64 rather than change python:amd64
  MarkDelete python-all:amd64 < 2.7.15~rc1-1 | 2.7.17-2ubuntu4 @ii umH Ib > FU=0
Investigating (2) python-numpy-dbg:amd64 < 1:1.13.3-2ubuntu1 | 1:1.16.5-2ubuntu7 @ii umH Ib >
Broken python-numpy-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR >
  Considering python-dbg:amd64 9999 as a solution to python-numpy-dbg:amd64 0
    Reinst Failed because of python2:amd64
  MarkKeep python2-dbg:amd64 < none -> 2.7.17-2ubuntu4 @un uN Ib > FU=0
    Reinst Failed because of python2-dbg:amd64
  MarkKeep python-numpy-dbg:amd64 < 1:1.13.3-2ubuntu1 -> 1:1.16.5-2ubuntu7 @ii umU Ib > FU=0
  Removing python-numpy-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-numpy-dbg:amd64 < 1:1.13.3-2ubuntu1 | 1:1.16.5-2ubuntu7 @ii umH Ib > FU=0
Investigating (2) python-pil-dbg:amd64 < 5.1.0-1ubuntu0.3 | 6.2.1-3 @ii umH Ib >
Broken python-pil-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR >
  Considering python-dbg:amd64 9999 as a solution to python-pil-dbg:amd64 0
    Reinst Failed because of python2:amd64
  MarkKeep python-pil:amd64 < 5.1.0-1ubuntu0.3 -> 6.2.1-3 @ii umU Ib > FU=0
    Reinst Failed because of python-pil:amd64
  MarkKeep python-pil-dbg:amd64 < 5.1.0-1ubuntu0.3 -> 6.2.1-3 @ii umU Ib > FU=0
  Removing python-pil-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-pil-dbg:amd64 < 5.1.0-1ubuntu0.3 | 6.2.1-3 @ii umH Ib > FU=0
Investigating (2) python-all-dbg:amd64 < 2.7.15~rc1-1 | 2.7.17-2ubuntu4 @ii umH Ib >
Broken python-all-dbg:amd64 Dépend on python:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python:amd64 9999 as a solution to python-all-dbg:amd64 0
  Removing python-all-dbg:amd64 rather than change python:amd64
  MarkDelete python-all-dbg:amd64 < 2.7.15~rc1-1 | 2.7.17-2ubuntu4 @ii umH Ib > FU=0
Investigating (2) python-gobject-2-dbg:amd64 < 2.28.6-12ubuntu3 | 2.28.6-14ubuntu1 @ii umH Ib >
Broken python-gobject-2-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR > (< 2.8)
  Considering python-dbg:amd64 9999 as a solution to python-gobject-2-dbg:amd64 0
    Reinst Failed because of python2:amd64
  MarkKeep python-gobject-2:amd64 < 2.28.6-12ubuntu3 -> 2.28.6-14ubuntu1 @ii umU Ib > FU=0
    Reinst Failed because of python-gobject-2:amd64
  MarkKeep python-gobject-2-dbg:amd64 < 2.28.6-12ubuntu3 -> 2.28.6-14ubuntu1 @ii umU Ib > FU=0
  Removing python-gobject-2-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-gobject-2-dbg:amd64 < 2.28.6-12ubuntu3 | 2.28.6-14ubuntu1 @ii umH Ib > FU=0
Investigating (2) python-cairo-dbg:amd64 < 1.16.2-1 | 1.16.2-2ubuntu2 @ii umH Ib >
Broken python-cairo-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR >
  Considering python-dbg:amd64 9999 as a solution to python-cairo-dbg:amd64 0
    Reinst Failed because of python2:amd64
  MarkKeep python-cairo:amd64 < 1.16.2-1 -> 1.16.2-2ubuntu2 @ii umU Ib > FU=0
    Reinst Failed because of python-cairo:amd64
  MarkKeep python-cairo-dbg:amd64 < 1.16.2-1 -> 1.16.2-2ubuntu2 @ii umU Ib > FU=0
  Removing python-cairo-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-cairo-dbg:amd64 < 1.16.2-1 | 1.16.2-2ubuntu2 @ii umH Ib > FU=0
Investigating (2) python-tk-dbg:amd64 < 2.7.17-1~18.04 | 2.7.18-1 @ii umH Ib >
Broken python-tk-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR > (>= 2.7)
  Considering python-dbg:amd64 9999 as a solution to python-tk-dbg:amd64 -1
    Reinst Failed because of python2-dbg:amd64
  MarkKeep python-tk-dbg:amd64 < 2.7.17-1~18.04 -> 2.7.18-1 @ii umU Ib > FU=0
  Removing python-tk-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-tk-dbg:amd64 < 2.7.17-1~18.04 | 2.7.18-1 @ii umH Ib > FU=0
Investigating (2) python-gtk2-dbg:amd64 < 2.24.0-5.1ubuntu2 @ii mK Ib >
Broken python-gtk2-dbg:amd64 Dépend on python-numpy-dbg:amd64 < 1:1.13.3-2ubuntu1 | 1:1.16.5-2ubuntu7 @ii umR >
  Considering python-numpy-dbg:amd64 9999 as a solution to python-gtk2-dbg:amd64 -2
  Removing python-gtk2-dbg:amd64 rather than change python-numpy-dbg:amd64
  MarkDelete python-gtk2-dbg:amd64 < 2.24.0-5.1ubuntu2 @ii mK Ib > FU=0
Investigating (2) python-matplotlib-dbg:amd64 < 2.1.1-2ubuntu3 @ii mK Ib >
Broken python-matplotlib-dbg:amd64 Dépend on python-all-dbg:amd64 < 2.7.15~rc1-1 | 2.7.17-2ubuntu4 @ii umR >
  Considering python-all-dbg:amd64 9999 as a solution to python-matplotlib-dbg:amd64 -2
  Removing python-matplotlib-dbg:amd64 rather than change python-all-dbg:amd64
  MarkDelete python-matplotlib-dbg:amd64 < 2.1.1-2ubuntu3 @ii mK Ib > FU=0
Investigating (2) python-sane-dbg:amd64 < 2.8.3-1build3 @ii mK Ib >
Broken python-sane-dbg:amd64 Dépend on python-pil-dbg:amd64 < 5.1.0-1ubuntu0.3 | 6.2.1-3 @ii umR > (>= 2.7.0)
  Considering python-pil-dbg:amd64 9999 as a solution to python-sane-dbg:amd64 -2
  Removing python-sane-dbg:amd64 rather than change python-pil-dbg:amd64
  MarkDelete python-sane-dbg:amd64 < 2.8.3-1build3 @ii mK Ib > FU=0
Investigating (2) python-mysqldb-dbg:amd64 < 1.3.10-1build1 @ii mK Ib >
Broken python-mysqldb-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR >
  Considering python-dbg:amd64 9999 as a solution to python-mysqldb-dbg:amd64 -2
  Removing python-mysqldb-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-mysqldb-dbg:amd64 < 1.3.10-1build1 @ii mK Ib > FU=0
Investigating (3) python-is-python2:amd64 < none -> 2.7.17-4 @un pumN Ib >
Broken python-is-python2:amd64 Dépend on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH >
  Considering python2:amd64 4 as a solution to python-is-python2:amd64 9999
Done
Log time: 2020-10-09 19:22:47.452711

zigroful1

les main.log et apt.log ci-dessus sont les fichiers obtenus après un essai de mise à niveau encore une fois infructueux.
C'est à désespérer !

geole

Essayons plus fort

sudo apt install     --reinstall    --fix-missing    --fix-broken python2-minimal
sudo apt install     --reinstall    --fix-missing    --fix-broken python2

zigroful1

J'ai fait ce que vous m'avez demandé. J'ai relancé la mise à niveau. Echec de nouveau au moment où il cherche les sources !

sudo apt install     --reinstall    --fix-missing    --fix-broken python2
Lecture des listes de paquets... Fait
Construction de l'arbre des dépendances       
Lecture des informations d'état... Fait
E: Impossible de trouver le paquet python2

sudo apt install     --reinstall    --fix-missing    --fix-broken python2-minimal
[sudo] Mot de passe de thomas : 
Lecture des listes de paquets... Fait
Construction de l'arbre des dépendances       
Lecture des informations d'état... Fait
E: Impossible de trouver le paquet python2-minimal

cat /var/log/dist-upgrade/main.log
2020-10-10 10:35:15,630 INFO Using config files '['./DistUpgrade.cfg.bionic']'
2020-10-10 10:35:15,630 INFO uname information: 'Linux thomas-K53SD 4.15.0-118-generic #119-Ubuntu SMP Tue Sep 8 12:30:01 UTC 2020 x86_64'
2020-10-10 10:35:16,123 INFO apt version: '1.6.12ubuntu0.1'
2020-10-10 10:35:16,123 INFO python version: '3.6.9 (default, Jul 17 2020, 12:50:27) 
[GCC 8.4.0]'
2020-10-10 10:35:16,127 INFO release-upgrader version '20.04.25' started
2020-10-10 10:35:16,195 INFO locale: 'fr_FR' 'UTF-8'
2020-10-10 10:35:16,518 DEBUG Using 'DistUpgradeViewGtk3' view
2020-10-10 10:35:16,574 DEBUG enable dpkg --force-overwrite
2020-10-10 10:35:16,598 DEBUG creating statefile: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
2020-10-10 10:35:23,568 DEBUG lsb-release: 'bionic'
2020-10-10 10:35:23,570 DEBUG _pythonSymlinkCheck run
2020-10-10 10:35:23,572 DEBUG openCache()
2020-10-10 10:35:23,572 DEBUG quirks: running PreCacheOpen
2020-10-10 10:35:23,572 DEBUG running Quirks.PreCacheOpen
2020-10-10 10:35:25,169 DEBUG Comparing 4.15.0-117 with 
2020-10-10 10:35:25,169 DEBUG Comparing 4.15.0-118 with 4.15.0-117
2020-10-10 10:35:25,621 DEBUG /openCache(), new cache size 100001
2020-10-10 10:35:25,621 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2020-10-10 10:35:25,621 DEBUG checkViewDepends()
2020-10-10 10:35:25,626 DEBUG running doUpdate() (showErrors=False)
2020-10-10 10:35:30,021 DEBUG openCache()
2020-10-10 10:35:31,623 DEBUG Comparing 4.15.0-117 with 
2020-10-10 10:35:31,624 DEBUG Comparing 4.15.0-118 with 4.15.0-117
2020-10-10 10:35:32,097 DEBUG /openCache(), new cache size 100001
2020-10-10 10:35:32,097 DEBUG doPostInitialUpdate
2020-10-10 10:35:32,097 DEBUG quirks: running focalPostInitialUpdate
2020-10-10 10:35:32,097 DEBUG running Quirks.focalPostInitialUpdate
2020-10-10 10:35:34,652 DEBUG Snap core18 is installed
2020-10-10 10:35:35,007 DEBUG Snap gtk-common-themes is installed
2020-10-10 10:35:35,395 DEBUG Snap gnome-3-28-1804 is installed
2020-10-10 10:35:35,396 DEBUG Snap gnome-3-28-1804 is not tracking the release channel
2020-10-10 10:35:35,600 DEBUG Snap gnome-calculator is installed
2020-10-10 10:35:35,793 DEBUG Snap gnome-characters is installed
2020-10-10 10:35:35,999 DEBUG Snap gnome-logs is installed
2020-10-10 10:35:40,043 DEBUG MetaPkgs: ubuntu-desktop
2020-10-10 10:35:46,062 DEBUG Foreign: 
2020-10-10 10:35:46,063 DEBUG Obsolete: 
2020-10-10 10:35:46,063 DEBUG updateSourcesList()
2020-10-10 10:35:46,073 DEBUG rewriteSourcesList() with mirror_check
2020-10-10 10:35:46,076 DEBUG ['ubuntu-minimal', 'ubuntu-standard']
2020-10-10 10:35:46,076 DEBUG Checking pkg: ubuntu-minimal
2020-10-10 10:35:46,079 DEBUG Checking pkg: ubuntu-standard
2020-10-10 10:35:46,081 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic main restricted'
2020-10-10 10:35:46,081 DEBUG verifySourcesListEntry: deb http://fr.archive.ubuntu.com/ubuntu/ focal main restricted
2020-10-10 10:35:46,081 DEBUG url_downloadable: http://fr.archive.ubuntu.com/ubuntu//dists/focal/Release
2020-10-10 10:35:46,082 DEBUG s='http' n='fr.archive.ubuntu.com' p='/ubuntu//dists/focal/Release' q='' f=''
2020-10-10 10:35:46,100 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal main restricted' updated to new dist
2020-10-10 10:35:46,101 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic main restricted'
2020-10-10 10:35:46,101 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal main restricted' updated to new dist
2020-10-10 10:35:46,101 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-updates main restricted'
2020-10-10 10:35:46,101 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-updates main restricted' updated to new dist
2020-10-10 10:35:46,102 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-updates main restricted'
2020-10-10 10:35:46,102 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-updates main restricted' updated to new dist
2020-10-10 10:35:46,102 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic universe'
2020-10-10 10:35:46,102 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal universe' updated to new dist
2020-10-10 10:35:46,103 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic universe'
2020-10-10 10:35:46,103 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal universe' updated to new dist
2020-10-10 10:35:46,103 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-updates universe'
2020-10-10 10:35:46,103 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-updates universe' updated to new dist
2020-10-10 10:35:46,103 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-updates universe'
2020-10-10 10:35:46,103 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-updates universe' updated to new dist
2020-10-10 10:35:46,104 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic multiverse'
2020-10-10 10:35:46,104 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal multiverse' updated to new dist
2020-10-10 10:35:46,104 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic multiverse'
2020-10-10 10:35:46,104 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal multiverse' updated to new dist
2020-10-10 10:35:46,104 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-updates multiverse'
2020-10-10 10:35:46,105 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-updates multiverse' updated to new dist
2020-10-10 10:35:46,105 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-updates multiverse'
2020-10-10 10:35:46,105 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-updates multiverse' updated to new dist
2020-10-10 10:35:46,105 DEBUG examining: 'deb http://archive.canonical.com/ubuntu bionic partner'
2020-10-10 10:35:46,105 DEBUG verifySourcesListEntry: deb http://archive.canonical.com/ubuntu focal partner
2020-10-10 10:35:46,106 DEBUG url_downloadable: http://archive.canonical.com/ubuntu/dists/focal/Release
2020-10-10 10:35:46,106 DEBUG s='http' n='archive.canonical.com' p='/ubuntu/dists/focal/Release' q='' f=''
2020-10-10 10:35:46,326 DEBUG entry 'deb http://archive.canonical.com/ubuntu focal partner' updated to new dist
2020-10-10 10:35:46,326 DEBUG examining: 'deb-src http://archive.canonical.com/ubuntu bionic partner'
2020-10-10 10:35:46,327 DEBUG entry 'deb-src http://archive.canonical.com/ubuntu focal partner' updated to new dist
2020-10-10 10:35:46,327 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-security main restricted'
2020-10-10 10:35:46,327 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-security main restricted' updated to new dist
2020-10-10 10:35:46,327 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-security main restricted'
2020-10-10 10:35:46,327 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-security main restricted' updated to new dist
2020-10-10 10:35:46,327 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-security universe'
2020-10-10 10:35:46,327 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-security universe' updated to new dist
2020-10-10 10:35:46,327 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-security universe'
2020-10-10 10:35:46,328 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-security universe' updated to new dist
2020-10-10 10:35:46,328 DEBUG examining: 'deb http://fr.archive.ubuntu.com/ubuntu/ bionic-security multiverse'
2020-10-10 10:35:46,328 DEBUG entry 'deb http://fr.archive.ubuntu.com/ubuntu/ focal-security multiverse' updated to new dist
2020-10-10 10:35:46,328 DEBUG examining: 'deb-src http://fr.archive.ubuntu.com/ubuntu/ bionic-security multiverse'
2020-10-10 10:35:46,328 DEBUG entry 'deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-security multiverse' updated to new dist
2020-10-10 10:35:46,330 DEBUG running doUpdate() (showErrors=True)
2020-10-10 10:36:09,072 DEBUG openCache()
2020-10-10 10:36:10,291 DEBUG Comparing 4.15.0-117 with 
2020-10-10 10:36:10,292 DEBUG Comparing 4.15.0-118 with 4.15.0-117
2020-10-10 10:36:10,595 DEBUG /openCache(), new cache size 67074
2020-10-10 10:36:10,596 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2020-10-10 10:36:10,597 DEBUG quirks: running PreDistUpgradeCache
2020-10-10 10:36:10,597 DEBUG running Quirks.PreDistUpgradeCache
2020-10-10 10:36:10,597 INFO installing python-is-python2 because python-minimal was installed
2020-10-10 10:36:10,597 DEBUG Installing 'python-is-python2' (python-minimal was installed on the system)
2020-10-10 10:36:47,650 ERROR Dist-upgrade failed: 'E:Impossible de corriger les problèmes, des paquets défectueux sont en mode « garder en l'état ».'
2020-10-10 10:36:47,652 DEBUG abort called
2020-10-10 10:36:47,653 DEBUG openCache()
2020-10-10 10:36:51,843 DEBUG Comparing 4.15.0-117 with 
2020-10-10 10:36:51,843 DEBUG Comparing 4.15.0-118 with 4.15.0-117
2020-10-10 10:36:52,308 DEBUG /openCache(), new cache size 100001

cat /var/log/dist-upgrade/apt.log
Log time: 2020-10-10 10:35:25.617026
Log time: 2020-10-10 10:35:32.081923
Log time: 2020-10-10 10:36:10.582179
  MarkInstall python-is-python2:amd64 < none -> 2.7.17-4 @un uN Ib > FU=1
  Installing python2 as Dépend of python-is-python2
    MarkInstall python2:amd64 < none -> 2.7.17-2ubuntu4 @un uN Ib > FU=0
    Installing python2-minimal as Pré-Dépend of python2
      MarkInstall python2-minimal:amd64 < none -> 2.7.17-2ubuntu4 @un uN Ib > FU=0
       Removing: python-minimal
        MarkDelete python-minimal:amd64 < 2.7.15~rc1-1 @ii mK > FU=0
    Installing libpython2-stdlib as Dépend of python2
      MarkInstall libpython2-stdlib:amd64 < none -> 2.7.17-2ubuntu4 @un uN Ib > FU=0
       Removing: libpython-stdlib
        MarkDelete libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii mK > FU=0
     Removing: python
      MarkDelete python:amd64 < 2.7.15~rc1-1 @ii mK Ib > FU=0
Starting pkgProblemResolver with broken count: 2
Starting 2 pkgProblemResolver with broken count: 2
Investigating (0) python-dbg:amd64 < 2.7.15~rc1-1 @ii mK Ib >
Broken python-dbg:amd64 Dépend on python:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python:amd64 6 as a solution to python-dbg:amd64 10
  Added python:amd64 to the remove list
  Fixing python-dbg:amd64 via keep of python:amd64
  MarkKeep python:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
Investigating (0) python:amd64 < 2.7.15~rc1-1 @ii gK Ib >
Broken python:amd64 Pré-Dépend on python-minimal:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python-minimal:amd64 0 as a solution to python:amd64 6
  Added python-minimal:amd64 to the remove list
Broken python:amd64 Dépend on libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering libpython-stdlib:amd64 0 as a solution to python:amd64 6
  Added libpython-stdlib:amd64 to the remove list
  Fixing python:amd64 via keep of python-minimal:amd64
  MarkKeep python-minimal:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
  Fixing python:amd64 via keep of libpython-stdlib:amd64
  MarkKeep libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
Investigating (0) python2:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken python2:amd64 Casse on python:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering python:amd64 6 as a solution to python2:amd64 4
  MarkKeep python2:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib > FU=0
  Holding Back python2:amd64 rather than change python:amd64
Investigating (0) python2-minimal:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken python2-minimal:amd64 Casse on python-minimal:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering python-minimal:amd64 0 as a solution to python2-minimal:amd64 3
  Added python-minimal:amd64 to the remove list
  Fixing python2-minimal:amd64 via remove of python-minimal:amd64
  MarkDelete python-minimal:amd64 < 2.7.15~rc1-1 @ii gK > FU=0
Investigating (0) libpython2-stdlib:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken libpython2-stdlib:amd64 Casse on libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering libpython-stdlib:amd64 0 as a solution to libpython2-stdlib:amd64 3
  Added libpython-stdlib:amd64 to the remove list
  Fixing libpython2-stdlib:amd64 via remove of libpython-stdlib:amd64
  MarkDelete libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gK > FU=0
Investigating (0) python-all:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib >
Broken python-all:amd64 Dépend on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH > (= 2.7.17-2ubuntu4)
  Considering python2:amd64 4 as a solution to python-all:amd64 1
  MarkKeep python-all:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib > FU=0
  Holding Back python-all:amd64 rather than change python2:amd64
Investigating (0) python-all-dbg:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib >
Broken python-all-dbg:amd64 Dépend on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH > (= 2.7.17-2ubuntu4)
  Considering python2:amd64 4 as a solution to python-all-dbg:amd64 0
  MarkKeep python-all-dbg:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib > FU=0
  Holding Back python-all-dbg:amd64 rather than change python2:amd64
Investigating (1) python-is-python2:amd64 < none -> 2.7.17-4 @un pumN Ib >
Broken python-is-python2:amd64 Dépend on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH >
  Considering python2:amd64 4 as a solution to python-is-python2:amd64 9999
  Re-Instated python2:amd64
Broken python-is-python2:amd64 Casse on python:amd64 < 2.7.15~rc1-1 @ii gK Ib >
  Considering python:amd64 6 as a solution to python-is-python2:amd64 9999
  Added python:amd64 to the remove list
  Fixing python-is-python2:amd64 via remove of python:amd64
  MarkDelete python:amd64 < 2.7.15~rc1-1 @ii gK Ib > FU=0
Investigating (1) python-dbg:amd64 < 2.7.15~rc1-1 @ii mK Ib >
Broken python-dbg:amd64 Dépend on python:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python:amd64 6 as a solution to python-dbg:amd64 10
  Added python:amd64 to the remove list
  Fixing python-dbg:amd64 via keep of python:amd64
  MarkKeep python:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
Investigating (1) python:amd64 < 2.7.15~rc1-1 @ii gK Ib >
Broken python:amd64 Pré-Dépend on python-minimal:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python-minimal:amd64 0 as a solution to python:amd64 6
  Added python-minimal:amd64 to the remove list
Broken python:amd64 Dépend on libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering libpython-stdlib:amd64 0 as a solution to python:amd64 6
  Added libpython-stdlib:amd64 to the remove list
  Fixing python:amd64 via keep of python-minimal:amd64
  MarkKeep python-minimal:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
  Fixing python:amd64 via keep of libpython-stdlib:amd64
  MarkKeep libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gR > FU=0
Investigating (1) python2:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken python2:amd64 Casse on python:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering python:amd64 6 as a solution to python2:amd64 4
  MarkKeep python2:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib > FU=0
  Holding Back python2:amd64 rather than change python:amd64
Investigating (1) python2-minimal:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken python2-minimal:amd64 Casse on python-minimal:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering python-minimal:amd64 0 as a solution to python2-minimal:amd64 3
  Added python-minimal:amd64 to the remove list
  Fixing python2-minimal:amd64 via remove of python-minimal:amd64
  MarkDelete python-minimal:amd64 < 2.7.15~rc1-1 @ii gK > FU=0
Investigating (1) libpython2-stdlib:amd64 < none -> 2.7.17-2ubuntu4 @un umN Ib >
Broken libpython2-stdlib:amd64 Casse on libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
  Considering libpython-stdlib:amd64 0 as a solution to libpython2-stdlib:amd64 3
  Added libpython-stdlib:amd64 to the remove list
  Fixing libpython2-stdlib:amd64 via remove of libpython-stdlib:amd64
  MarkDelete libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gK > FU=0
 Try to Re-Instate (1) python-all:amd64
  MarkKeep python-all:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib > FU=0
 Try to Re-Instate (1) python-all-dbg:amd64
  MarkKeep python-all-dbg:amd64 < 2.7.15~rc1-1 -> 2.7.17-2ubuntu4 @ii umU Ib > FU=0
Investigating (2) python-is-python2:amd64 < none -> 2.7.17-4 @un pumN Ib >
Broken python-is-python2:amd64 Dépend on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH >
  Considering python2:amd64 4 as a solution to python-is-python2:amd64 9999
Broken python-is-python2:amd64 Casse on python:amd64 < 2.7.15~rc1-1 @ii gK Ib >
  Considering python:amd64 6 as a solution to python-is-python2:amd64 9999
  Added python:amd64 to the remove list
  Fixing python-is-python2:amd64 via remove of python:amd64
  MarkDelete python:amd64 < 2.7.15~rc1-1 @ii gK Ib > FU=0
Investigating (2) python-dbg:amd64 < 2.7.15~rc1-1 @ii mK Ib >
Broken python-dbg:amd64 Dépend on python:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python:amd64 9999 as a solution to python-dbg:amd64 10
  Removing python-dbg:amd64 rather than change python:amd64
  MarkDelete python-dbg:amd64 < 2.7.15~rc1-1 @ii mK Ib > FU=0
Investigating (2) python-all:amd64 < 2.7.15~rc1-1 | 2.7.17-2ubuntu4 @ii umH Ib >
Broken python-all:amd64 Dépend on python:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python:amd64 9999 as a solution to python-all:amd64 1
  Removing python-all:amd64 rather than change python:amd64
  MarkDelete python-all:amd64 < 2.7.15~rc1-1 | 2.7.17-2ubuntu4 @ii umH Ib > FU=0
Investigating (2) python-numpy-dbg:amd64 < 1:1.13.3-2ubuntu1 | 1:1.16.5-2ubuntu7 @ii umH Ib >
Broken python-numpy-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR >
  Considering python-dbg:amd64 9999 as a solution to python-numpy-dbg:amd64 0
    Reinst Failed because of python2:amd64
  MarkKeep python2-dbg:amd64 < none -> 2.7.17-2ubuntu4 @un uN Ib > FU=0
    Reinst Failed because of python2-dbg:amd64
  MarkKeep python-numpy-dbg:amd64 < 1:1.13.3-2ubuntu1 -> 1:1.16.5-2ubuntu7 @ii umU Ib > FU=0
  Removing python-numpy-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-numpy-dbg:amd64 < 1:1.13.3-2ubuntu1 | 1:1.16.5-2ubuntu7 @ii umH Ib > FU=0
Investigating (2) python-pil-dbg:amd64 < 5.1.0-1ubuntu0.3 | 6.2.1-3 @ii umH Ib >
Broken python-pil-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR >
  Considering python-dbg:amd64 9999 as a solution to python-pil-dbg:amd64 0
    Reinst Failed because of python2:amd64
  MarkKeep python-pil:amd64 < 5.1.0-1ubuntu0.3 -> 6.2.1-3 @ii umU Ib > FU=0
    Reinst Failed because of python-pil:amd64
  MarkKeep python-pil-dbg:amd64 < 5.1.0-1ubuntu0.3 -> 6.2.1-3 @ii umU Ib > FU=0
  Removing python-pil-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-pil-dbg:amd64 < 5.1.0-1ubuntu0.3 | 6.2.1-3 @ii umH Ib > FU=0
Investigating (2) python-all-dbg:amd64 < 2.7.15~rc1-1 | 2.7.17-2ubuntu4 @ii umH Ib >
Broken python-all-dbg:amd64 Dépend on python:amd64 < 2.7.15~rc1-1 @ii gR > (= 2.7.15~rc1-1)
  Considering python:amd64 9999 as a solution to python-all-dbg:amd64 0
  Removing python-all-dbg:amd64 rather than change python:amd64
  MarkDelete python-all-dbg:amd64 < 2.7.15~rc1-1 | 2.7.17-2ubuntu4 @ii umH Ib > FU=0
Investigating (2) python-gobject-2-dbg:amd64 < 2.28.6-12ubuntu3 | 2.28.6-14ubuntu1 @ii umH Ib >
Broken python-gobject-2-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR > (< 2.8)
  Considering python-dbg:amd64 9999 as a solution to python-gobject-2-dbg:amd64 0
    Reinst Failed because of python2:amd64
  MarkKeep python-gobject-2:amd64 < 2.28.6-12ubuntu3 -> 2.28.6-14ubuntu1 @ii umU Ib > FU=0
    Reinst Failed because of python-gobject-2:amd64
  MarkKeep python-gobject-2-dbg:amd64 < 2.28.6-12ubuntu3 -> 2.28.6-14ubuntu1 @ii umU Ib > FU=0
  Removing python-gobject-2-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-gobject-2-dbg:amd64 < 2.28.6-12ubuntu3 | 2.28.6-14ubuntu1 @ii umH Ib > FU=0
Investigating (2) python-cairo-dbg:amd64 < 1.16.2-1 | 1.16.2-2ubuntu2 @ii umH Ib >
Broken python-cairo-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR >
  Considering python-dbg:amd64 9999 as a solution to python-cairo-dbg:amd64 0
    Reinst Failed because of python2:amd64
  MarkKeep python-cairo:amd64 < 1.16.2-1 -> 1.16.2-2ubuntu2 @ii umU Ib > FU=0
    Reinst Failed because of python-cairo:amd64
  MarkKeep python-cairo-dbg:amd64 < 1.16.2-1 -> 1.16.2-2ubuntu2 @ii umU Ib > FU=0
  Removing python-cairo-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-cairo-dbg:amd64 < 1.16.2-1 | 1.16.2-2ubuntu2 @ii umH Ib > FU=0
Investigating (2) python-tk-dbg:amd64 < 2.7.17-1~18.04 | 2.7.18-1 @ii umH Ib >
Broken python-tk-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR > (>= 2.7)
  Considering python-dbg:amd64 9999 as a solution to python-tk-dbg:amd64 -1
    Reinst Failed because of python2-dbg:amd64
  MarkKeep python-tk-dbg:amd64 < 2.7.17-1~18.04 -> 2.7.18-1 @ii umU Ib > FU=0
  Removing python-tk-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-tk-dbg:amd64 < 2.7.17-1~18.04 | 2.7.18-1 @ii umH Ib > FU=0
Investigating (2) python-gtk2-dbg:amd64 < 2.24.0-5.1ubuntu2 @ii mK Ib >
Broken python-gtk2-dbg:amd64 Dépend on python-numpy-dbg:amd64 < 1:1.13.3-2ubuntu1 | 1:1.16.5-2ubuntu7 @ii umR >
  Considering python-numpy-dbg:amd64 9999 as a solution to python-gtk2-dbg:amd64 -2
  Removing python-gtk2-dbg:amd64 rather than change python-numpy-dbg:amd64
  MarkDelete python-gtk2-dbg:amd64 < 2.24.0-5.1ubuntu2 @ii mK Ib > FU=0
Investigating (2) python-matplotlib-dbg:amd64 < 2.1.1-2ubuntu3 @ii mK Ib >
Broken python-matplotlib-dbg:amd64 Dépend on python-all-dbg:amd64 < 2.7.15~rc1-1 | 2.7.17-2ubuntu4 @ii umR >
  Considering python-all-dbg:amd64 9999 as a solution to python-matplotlib-dbg:amd64 -2
  Removing python-matplotlib-dbg:amd64 rather than change python-all-dbg:amd64
  MarkDelete python-matplotlib-dbg:amd64 < 2.1.1-2ubuntu3 @ii mK Ib > FU=0
Investigating (2) python-sane-dbg:amd64 < 2.8.3-1build3 @ii mK Ib >
Broken python-sane-dbg:amd64 Dépend on python-pil-dbg:amd64 < 5.1.0-1ubuntu0.3 | 6.2.1-3 @ii umR > (>= 2.7.0)
  Considering python-pil-dbg:amd64 9999 as a solution to python-sane-dbg:amd64 -2
  Removing python-sane-dbg:amd64 rather than change python-pil-dbg:amd64
  MarkDelete python-sane-dbg:amd64 < 2.8.3-1build3 @ii mK Ib > FU=0
Investigating (2) python-mysqldb-dbg:amd64 < 1.3.10-1build1 @ii mK Ib >
Broken python-mysqldb-dbg:amd64 Dépend on python-dbg:amd64 < 2.7.15~rc1-1 @ii mR >
  Considering python-dbg:amd64 9999 as a solution to python-mysqldb-dbg:amd64 -2
  Removing python-mysqldb-dbg:amd64 rather than change python-dbg:amd64
  MarkDelete python-mysqldb-dbg:amd64 < 1.3.10-1build1 @ii mK Ib > FU=0
Investigating (3) python-is-python2:amd64 < none -> 2.7.17-4 @un pumN Ib >
Broken python-is-python2:amd64 Dépend on python2:amd64 < none | 2.7.17-2ubuntu4 @un umH >
  Considering python2:amd64 4 as a solution to python-is-python2:amd64 9999
Done
Log time: 2020-10-10 10:36:52.291892

geole

Bonjour
Il me semble que cela a parlé un peu plus, tentes

sudo apt remove  --purge python-pil-dbg

sudo apt remove --purge python-numpy-dbg

sudo apt remove  --purge python-gobject-2-dbg


sudo apt remove  --purge python-cairo-dbg


sudo apt remove  --purge python-tk-dbg

sudo apt remove  --purge python-gtk2-dbg

sudo apt remove  --purge python-matplotlib-dbg

sudo apt remove  --purge python-sane-dbg

sudo apt remove  --purge python-mysqldb-dbg

sudo apt remove --purge   python2-dbg

sudo apt remove --purge python-is-python2

Ce sont des paquets que je n'ai pas et qui sont cités dans les ennuis.
J'espère qu'il y en aura moins dans la prochaine trace..

AFFAIRE à suivre dans https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1898372
ainsi que la https://forum.ubuntu-fr.org/viewtopic.php?id=2057138

zigroful1

Bonjour Geole,

J'ai fait ce que tu m'as dit en #73 et, enfin, la mise à niveau semble avoir réussi.
Je voulais te remercier pour la patience que tu as eue et pour tes conseils !
ATTENTION toutefois: au moment de la configuration de inkscape, l'ordi a semblé se figer. Plus rien n'avançait pendant 3 heures au moins. j'ai cru à une panne de connexion et j'allais tout abandonner. Finalement j'ai laissé mon ordi allumé toute la nuit, pensant qu'il s'agissait d'un arrêt momentané du serveur. Bien m'en a pris, car ce matin, la mise à jour a repris et il semble qu'elle ait réussi.

Encore une fois merci

geole

Merci de ton retour.
Je peux simplement te dire que j'ai du mal à comprendre les traces et trouver exactement la bonne chose à faire.
Il semble que, dans ton contexte, tous les paquets de DEV ont posés des problèmes.
Il est probable que la mise à niveau automatique n'ait pas été envisagée par l'outil pour les ordinateurs de développement. Ce qui n'est pas trop surprenant.
Je n'étais pas sur d'avoir vu toutes les lignes et je pensais que cela allait encore planter avec une trace moins volumineuse dans laquelle on aurait encore vu quelques lignes de DeBuG.
J'espère pour toi que tout ira bien en version 20.04.1

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