Bonjour,

apparemment il faudrait que j'upgrade Ubuntu 16.04 LTS vers 18.04.5 LTS ... mais quand je cliques " Mise à niveau " puis mot de passe , cela ne fait rien.

J'ai donc ouvert le Terminal => 
sudo apt upgrade
Et j'obtiens cela => 
Lecture des listes de paquets... Fait
Construction de l'arbre des dépendances       
Lecture des informations d'état... Fait
Calcul de la mise à jour... Fait
Certains paquets ne peuvent être installés. Ceci peut signifier
que vous avez demandé l'impossible, ou bien, si vous utilisez
la distribution unstable, que certains paquets n'ont pas encore
été créés ou ne sont pas sortis d'Incoming.
L'information suivante devrait vous aider à résoudre la situation : 

Les paquets suivants contiennent des dépendances non satisfaites :
 libcjs0c : Est en conflit avec: libcjs0 mais 2.8.0-1 devra être installé
E: Paquets défectueux
Il y a donc un problème , mais lequel ???
Bonjour,

Montre le retour de : 
sudo apt update
et d'éventuels paquets cassés : 
dpkg -l | grep -v ^ii
sudo apt update
=> 
Atteint :1 http://fr.archive.ubuntu.com/ubuntu xenial InRelease
Atteint :2 http://fr.archive.ubuntu.com/ubuntu xenial-updates InRelease        
Atteint :3 http://archive.canonical.com/ubuntu xenial InRelease                
Atteint :4 http://security.ubuntu.com/ubuntu xenial-security InRelease
Lecture des listes de paquets... Fait                          
Construction de l'arbre des dépendances       
Lecture des informations d'état... Fait
1 paquet peut être mis à jour. Exécutez « apt list --upgradable » pour le voir.
dpkg -l | grep -v ^ii
=> 
Souhait=inconnU/Installé/suppRimé/Purgé/H=à garder
| État=Non/Installé/fichier-Config/dépaqUeté/échec-conFig/H=semi-installé/W=attend-traitement-déclenchements
|/ Err?=(aucune)/besoin Réinstallation (État,Err: majuscule=mauvais)
||/ Nom                                                   Version                                         Architecture Description
+++-=====================================================-===============================================-============-========================================================================================================================================================================================================================================
rc  account-plugin-windows-live                           0.11+14.04.20140409.1-0ubuntu2                  all          GNOME Control Center account plugin for single signon - windows live
rc  aptitude                                              0.6.8.2-1ubuntu4                                amd64        terminal-based package manager
rc  avidemux                                              1:2.5.4-0ubuntu14                               amd64        a free video editor - GTK version
rc  ca-certificates-java                                  20130815ubuntu1                                 all          Common CA certificates (JKS keystore)
rc  dleyna-server                                         0.4.0-1                                         amd64        DBus service to interact with DLNA Digital Media Servers
rc  gcompris                                              13.11-1                                         amd64        Educational games for small children
rc  gnome-control-center                                  1:3.6.3-0ubuntu56.1                             amd64        utilities to configure the GNOME desktop
rc  gnome-control-center-datetime                         13.10.0+14.04.20140205-0ubuntu1                 amd64        Clock settings in the GNOME Control Center
rc  gnome-media                                           3.4.0-1ubuntu2                                  amd64        GNOME media utilities
rc  gstreamer0.10-plugins-good:amd64                      0.10.31-3+nmu1ubuntu5.3                         amd64        GStreamer plugins from the "good" set
rc  indicator-network                                     0.7.1+16.04.20160406.1-0ubuntu1                 amd64        Systems settings menu service - Network indicator
rc  k3b                                                   2.0.2-7ubuntu1                                  amd64        Sophisticated CD/DVD burning application
rc  lib32z1                                               1:1.2.8.dfsg-1ubuntu1                           amd64        compression library - 32 bit runtime
rc  libatkmm-1.6-1:amd64                                  2.22.7-2ubuntu1                                 amd64        C++ wrappers for ATK accessibility toolkit (shared libraries)
rc  libatkmm-1.6-1:i386                                   2.22.7-2ubuntu1                                 i386         C++ wrappers for ATK accessibility toolkit (shared libraries)
rc  libavcodec54:amd64                                    6:9.20-0ubuntu0.14.04.1                         amd64        Libav codec library
rc  libavdevice53:amd64                                   6:9.20-0ubuntu0.14.04.1                         amd64        Libav device handling library
rc  libavfilter3:amd64                                    6:9.20-0ubuntu0.14.04.1                         amd64        Libav video filtering library
rc  libavformat54:amd64                                   6:9.20-0ubuntu0.14.04.1                         amd64        Libav file format library
rc  libbind9-90                                           1:9.9.5.dfsg-3ubuntu0.16                        amd64        BIND9 Shared Library used by BIND
rc  libboost-filesystem1.54.0:amd64                       1.54.0-4ubuntu3.1                               amd64        filesystem operations (portable paths, iteration over directories, etc) in C++
rc  libboost-system1.54.0:amd64                           1.54.0-4ubuntu3.1                               amd64        Operating system (e.g. diagnostics support) library
rc  libboost-thread1.54.0:amd64                           1.54.0-4ubuntu3.1                               amd64        portable C++ multi-threading
rc  libc6-i386                                            2.19-0ubuntu6.9                                 amd64        Embedded GNU C Library: 32-bit shared libraries for AMD64
rc  libcairomm-1.0-1:amd64                                1.10.0-1ubuntu3                                 amd64        C++ wrappers for Cairo (shared libraries)
rc  libcairomm-1.0-1:i386                                 1.10.0-1ubuntu3                                 i386         C++ wrappers for Cairo (shared libraries)
rc  libcec3:amd64                                         3.1.0.1~trusty                                  amd64        libCEC communication Library (shared library)
rc  libcheese-gtk23:amd64                                 3.10.2-0ubuntu2                                 amd64        tool to take pictures and videos from your webcam - widgets
rc  libcheese7:amd64                                      3.10.2-0ubuntu2                                 amd64        tool to take pictures and videos from your webcam - base library
rc  libcinnamon-desktop0                                  2.0.4-20140212011537-trusty                     amd64        Utility library for loading .desktop files - runtime files
rc  libclucene-contribs1:amd64                            2.3.3.4-4build1                                 amd64        language specific text analyzers (runtime)
rc  libclucene-core1:amd64                                2.3.3.4-4build1                                 amd64        core library for full-featured text search engine (runtime)
rc  libcogl-pango15:amd64                                 1.16.2-1                                        amd64        Object oriented GL/GLES Abstraction/Utility Layer
rc  libcogl15:amd64                                       1.16.2-1                                        amd64        Object oriented GL/GLES Abstraction/Utility Layer
rc  libcolumbus1:amd64                                    1.1.0+14.04.20140325.3-0ubuntu1                 amd64        error tolerant matching engine - shared library
rc  libcwidget3                                           0.5.16-3.5ubuntu1                               amd64        high-level terminal interface library for C++ (runtime files)
rc  libdbus-cpp5:amd64                                    5.0.0+15.10.20151022.1-0ubuntu1                 amd64        header-only dbus-binding leveraging C++-11
rc  libdns100                                             1:9.9.5.dfsg-3ubuntu0.16                        amd64        DNS Shared Library used by BIND
rc  libebml4:amd64                                        1.3.0-2+deb8u1build0.14.04.1                    amd64        access library for the EBML format (shared library)
rc  libecal-1.2-16                                        3.10.4-0ubuntu1.5                               amd64        Client library for evolution calendars
rc  libecryptfs0                                          104-0ubuntu1.14.04.4                            amd64        ecryptfs cryptographic filesystem (library)
rc  libedata-cal-1.2-23                                   3.10.4-0ubuntu1.5                               amd64        Backend library for evolution calendars
rc  libfarstream-0.1-0:amd64                              0.1.2-1ubuntu3                                  amd64        Audio/Video communications framework: core library
rc  libfarstream-0.2-2:amd64                              0.2.3-1ubuntu2                                  amd64        Audio/Video communications framework: core library
rc  libflac++6:amd64                                      1.3.0-2ubuntu0.14.04.1                          amd64        Free Lossless Audio Codec - C++ runtime library
rc  libfreerdp1:amd64                                     1.0.2-2ubuntu1.1                                amd64        RDP client for Windows Terminal Services (library)
rc  libgee2:amd64                                         0.6.8-1ubuntu1                                  amd64        GObject based collection library
rc  libgif4:i386                                          4.1.6-11                                        i386         library for GIF images (library)
rc  libglewmx1.10:amd64                                   1.10.0-3                                        amd64        OpenGL Extension Wrangler (Multiple Rendering Contexts)
rc  libglibmm-2.4-1c2a:amd64                              2.39.93-0ubuntu1                                amd64        C++ wrapper for the GLib toolkit (shared libraries)
rc  libglibmm-2.4-1c2a:i386                               2.39.93-0ubuntu1                                i386         C++ wrapper for the GLib toolkit (shared libraries)
rc  libgnome-control-center1                              1:3.6.3-0ubuntu56.1                             amd64        utilities to configure the GNOME desktop
rc  libgnutls28:amd64                                     3.2.11-2ubuntu1.1                               amd64        GNU TLS library - main runtime library
rc  libgphoto2-port10:i386                                2.5.3.1-1ubuntu2.2                              i386         gphoto2 digital camera port library
rc  libgtk2.0-0:i386                                      2.24.30-1ubuntu1.16.04.2                        i386         GTK+ graphical user interface library
rc  libgtkmm-2.4-1c2a:amd64                               1:2.24.4-1ubuntu1                               amd64        C++ wrappers for GTK+ (shared libraries)
rc  libgtkmm-2.4-1c2a:i386                                1:2.24.4-1ubuntu1                               i386         C++ wrappers for GTK+ (shared libraries)
rc  libgtkmm-3.0-1:amd64                                  3.10.1-0ubuntu2                                 amd64        C++ wrappers for GTK+ (shared libraries)
rc  libhogweed2:amd64                                     2.7.1-1ubuntu0.2                                amd64        low level cryptographic library (public-key cryptos)
rc  libical1                                              1.0-0ubuntu1                                    amd64        iCalendar library implementation in C (runtime)
rc  libidl0:amd64                                         0.8.14-0.2ubuntu4                               amd64        library for parsing CORBA IDL files
rc  libisccfg90                                           1:9.9.5.dfsg-3ubuntu0.16                        amd64        Config File Handling Library used by BIND
rc  libk3b6                                               2.0.2-7ubuntu1                                  amd64        KDE CD/DVD burning application library - runtime files
rc  libkactivities-models1                                4:4.13.3-0ubuntu0.2                             amd64        Activities models library
rc  libkubuntu0                                           14.04ubuntu4                                    amd64        library for Kubuntu platform integration
rc  libmagickwand5:amd64                                  8:6.7.7.10-6ubuntu3.9                           amd64        image manipulation library
rc  libmatroska6:amd64                                    1.4.1-2+deb8u1build0.14.04.1                    amd64        extensible open standard audio/video container format (shared library)
rc  libmbim-glib0:amd64                                   1.6.0-2ubuntu0.1                                amd64        Support library to use the MBIM protocol
rc  libmetacity-private0a                                 1:2.34.13-0ubuntu4.1                            amd64        library for the Metacity window manager
rc  libmicrohttpd10                                       0.9.33-1                                        amd64        library embedding HTTP server functionality
rc  libmikmod2:amd64                                      3.1.16-1                                        amd64        Portable sound library
rc  libmusicbrainz5-0:amd64                               5.0.1-2                                         amd64        Library to access the MusicBrainz.org database
rc  libmysqlclient18:i386                                 5.5.57-0ubuntu0.14.04.1                         i386         MySQL database client library
rc  libnepomuk4                                           4:4.13.3-0ubuntu0.5                             amd64        Nepomuk Meta Data Library
rc  libnepomukcleaner4                                    4:4.13.3-0ubuntu0.2                             amd64        Nepomuk Index Cleaner library
rc  libnepomukcore4abi1                                   4:4.13.3-0ubuntu0.2                             amd64        Nepomuk Meta Data Library
rc  libnepomukquery4a                                     4:4.13.3-0ubuntu0.5                             amd64        Nepomuk Query Library for the KDE Platform
rc  libnepomukutils4                                      4:4.13.3-0ubuntu0.5                             amd64        Nepomuk Utility Library
rc  libnettle4:amd64                                      2.7.1-1ubuntu0.2                                amd64        low level cryptographic library (symmetric and one-way cryptos)
rc  libopencv-calib3d2.4:amd64                            2.4.8+dfsg1-2ubuntu1                            amd64        computer vision Camera Calibration library
rc  libopencv-contrib2.4:amd64                            2.4.8+dfsg1-2ubuntu1                            amd64        computer vision contrib library
rc  libopencv-core2.4:amd64                               2.4.8+dfsg1-2ubuntu1                            amd64        computer vision core library
rc  libopencv-features2d2.4:amd64                         2.4.8+dfsg1-2ubuntu1                            amd64        computer vision Feature Detection and Descriptor Extraction library
rc  libopencv-flann2.4:amd64                              2.4.8+dfsg1-2ubuntu1                            amd64        computer vision Clustering and Search in Multi-Dimensional spaces library
rc  libopencv-highgui2.4:amd64                            2.4.8+dfsg1-2ubuntu1                            amd64        computer vision High-level GUI and Media I/O library
rc  libopencv-imgproc2.4:amd64                            2.4.8+dfsg1-2ubuntu1                            amd64        computer vision Image Processing library
rc  libopencv-legacy2.4:amd64                             2.4.8+dfsg1-2ubuntu1                            amd64        computer vision legacy library
rc  libopencv-ml2.4:amd64                                 2.4.8+dfsg1-2ubuntu1                            amd64        computer vision Machine Learning library
rc  libopencv-objdetect2.4:amd64                          2.4.8+dfsg1-2ubuntu1                            amd64        computer vision Object Detection library
rc  libopencv-photo2.4:amd64                              2.4.8+dfsg1-2ubuntu1                            amd64        computer vision computational photography library
rc  libopencv-video2.4:amd64                              2.4.8+dfsg1-2ubuntu1                            amd64        computer vision Video analysis library
rc  libopenobex1                                          1.5-2.1                                         amd64        OBEX protocol library
rc  liborcus-0.6-0                                        0.5.1-7                                         amd64        library for processing spreadsheet documents
rc  libp8-platform2:amd64                                 2.0.1-1~trusty                                  amd64        Pulse-Eight platform support library
rc  libpanel-applet-4-0                                   1:3.8.0-1ubuntu12.2                             amd64        library for GNOME Panel applets
rc  libpangomm-1.4-1:amd64                                2.34.0-1ubuntu1                                 amd64        C++ Wrapper for pango (shared libraries)
rc  libpangomm-1.4-1:i386                                 2.34.0-1ubuntu1                                 i386         C++ Wrapper for pango (shared libraries)
rc  libpcrecpp0:amd64                                     1:8.31-2ubuntu2.3                               amd64        Perl 5 Compatible Regular Expression Library - C++ runtime files
rc  libplymouth2:amd64                                    0.8.8-0ubuntu17.1                               amd64        graphical boot animation and logger - shared libraries
rc  libportsmf0:amd64                                     0.1~svn20101010-4                               amd64        Portable Standard Midi File Library
rc  libproxy1:amd64                                       0.4.11-0ubuntu4                                 amd64        automatic proxy configuration management library (shared)
rc  libpython3.4:amd64                                    3.4.3-1ubuntu1~14.04.5                          amd64        Shared Python runtime library (version 3.4)
rc  libpython3.4-minimal:amd64                            3.4.3-1ubuntu1~14.04.5                          amd64        Minimal subset of the Python language (version 3.4)
rc  libpyzy-1.0-0                                         1.0.1-4                                         amd64        Chinese PinYin and Bopomofo conversion library
rc  libqapt2                                              2.1.70-0ubuntu4.2                               amd64        QApt library package
rc  libqapt2-runtime                                      2.1.70-0ubuntu4.2                               amd64        Runtime components for the QApt library
rc  libqmi-glib0:amd64                                    1.4.0-1                                         amd64        Support library to use the Qualcomm MSM Interface (QMI) protocol
rc  libqt53d5:amd64                                       5.0~git20130731-0ubuntu5                        amd64        Qt 3D module
rc  libqt5core5:amd64                                     5.0.2+dfsg1-7ubuntu18                           amd64        Qt 5 core module
rc  librpmbuild3                                          4.11.1-3ubuntu0.1                               amd64        RPM build shared library
rc  librpmsign1                                           4.11.1-3ubuntu0.1                               amd64        RPM signing shared library
rc  libshairport1:amd64                                   1.2.1~git20120110.aeb4987-2ubuntu1              amd64        emulates an AirPort Express (shared library)
rc  libsidplay1                                           1.36.59-5ubuntu1                                amd64        SID (MOS 6581) emulation library
rc  libsidplay2                                           2.1.1-14                                        amd64        SID (MOS 6581) emulation library
rc  libsigc++-2.0-0c2a:amd64                              2.2.10-0.2ubuntu2                               amd64        type-safe Signal Framework for C++ - runtime
rc  libsigc++-2.0-0c2a:i386                               2.2.10-0.2ubuntu2                               i386         type-safe Signal Framework for C++ - runtime
rc  libstreamanalyzer0                                    0.7.8-1ubuntu2                                  amd64        streamanalyzer library for Strigi Desktop Search
rc  libstreams0                                           0.7.8-1ubuntu2                                  amd64        streams library for Strigi Desktop Search
rc  libsystemd-journal0:amd64                             204-5ubuntu20.24                                amd64        systemd journal utility library
rc  libsystemd-login0:amd64                               204-5ubuntu20.24                                amd64        systemd login utility library
rc  libt1-5                                               5.1.2-3.6ubuntu1                                amd64        Type 1 font rasterizer library - runtime
rc  libtag1-vanilla:amd64                                 1.9.1-2                                         amd64        audio meta-data library - vanilla flavour
rc  libtasn1-3:i386                                       2.14-3ubuntu1                                   i386         Manage ASN.1 structures (runtime)
rc  libtelepathy-farstream3:amd64                         0.6.1-0ubuntu1                                  amd64        Glue library between telepathy and farstream
rc  libtinyxml2.6.2:amd64                                 2.6.2-2                                         amd64        C++ XML parsing library
rc  libts-0.0-0:amd64                                     1.0-12                                          amd64        touch screen library
rc  libunity-core-6.0-8                                   7.1.2+14.04.20131106.1-0ubuntu4                 amd64        Core library for the Unity interface.
rc  libva-glx1:amd64                                      1.3.0-2                                         amd64        Video Acceleration (VA) API for Linux -- GLX runtime
rc  libvamp-hostsdk3:amd64                                2.5+repack0-2                                   amd64        helper library for Vamp hosts written in C++
rc  libvlccore7                                           2.1.6-0ubuntu14.04.4                            amd64        base library for VLC and its modules
rc  libvncserver0:amd64                                   0.9.9+dfsg-1ubuntu1.2                           amd64        API to write one's own vnc server
rc  libx264-142:amd64                                     2:0.142.2389+git956c8d8-2                       amd64        x264 video coding library
rc  libxapian22                                           1.2.16-2ubuntu1                                 amd64        Search engine library
rc  libxcb-util0:amd64                                    0.3.8-2ubuntu1                                  amd64        utility libraries for X C Binding -- atom, aux and event
rc  libxfce4util6                                         4.10.1-1ubuntu1                                 amd64        Utility functions library for Xfce4
rc  linux-image-3.13.0-133-generic                        3.13.0-133.182                                  amd64        Linux kernel image for version 3.13.0 on 64 bit x86 SMP
rc  linux-image-3.13.0-8-generic                          3.13.0-8.27                                     amd64        Linux kernel image for version 3.13.0 on 64 bit x86 SMP
rc  linux-image-4.4.0-101-generic                         4.4.0-101.124                                   amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-4.4.0-103-generic                         4.4.0-103.126                                   amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-4.4.0-104-generic                         4.4.0-104.127                                   amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-4.4.0-108-generic                         4.4.0-108.131                                   amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-4.4.0-109-generic                         4.4.0-109.132                                   amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-4.4.0-112-generic                         4.4.0-112.135                                   amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-4.4.0-116-generic                         4.4.0-116.140                                   amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-4.4.0-119-generic                         4.4.0-119.143                                   amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-4.4.0-122-generic                         4.4.0-122.146                                   amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-4.4.0-124-generic                         4.4.0-124.148                                   amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-4.4.0-127-generic                         4.4.0-127.153                                   amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-4.4.0-128-generic                         4.4.0-128.154                                   amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-4.4.0-130-generic                         4.4.0-130.156                                   amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-4.4.0-131-generic                         4.4.0-131.157                                   amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-4.4.0-139-generic                         4.4.0-139.165                                   amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-4.4.0-97-generic                          4.4.0-97.120                                    amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-4.4.0-98-generic                          4.4.0-98.121                                    amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-extra-3.13.0-133-generic                  3.13.0-133.182                                  amd64        Linux kernel extra modules for version 3.13.0 on 64 bit x86 SMP
rc  linux-image-extra-3.13.0-8-generic                    3.13.0-8.27                                     amd64        Linux kernel extra modules for version 3.13.0 on 64 bit x86 SMP
rc  linux-image-extra-4.4.0-101-generic                   4.4.0-101.124                                   amd64        Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-extra-4.4.0-103-generic                   4.4.0-103.126                                   amd64        Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-extra-4.4.0-104-generic                   4.4.0-104.127                                   amd64        Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-extra-4.4.0-108-generic                   4.4.0-108.131                                   amd64        Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-extra-4.4.0-109-generic                   4.4.0-109.132                                   amd64        Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-extra-4.4.0-112-generic                   4.4.0-112.135                                   amd64        Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-extra-4.4.0-116-generic                   4.4.0-116.140                                   amd64        Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-extra-4.4.0-119-generic                   4.4.0-119.143                                   amd64        Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-extra-4.4.0-122-generic                   4.4.0-122.146                                   amd64        Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-extra-4.4.0-124-generic                   4.4.0-124.148                                   amd64        Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-extra-4.4.0-127-generic                   4.4.0-127.153                                   amd64        Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-extra-4.4.0-128-generic                   4.4.0-128.154                                   amd64        Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-extra-4.4.0-130-generic                   4.4.0-130.156                                   amd64        Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-extra-4.4.0-131-generic                   4.4.0-131.157                                   amd64        Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-extra-4.4.0-139-generic                   4.4.0-139.165                                   amd64        Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-extra-4.4.0-97-generic                    4.4.0-97.120                                    amd64        Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
rc  linux-image-extra-4.4.0-98-generic                    4.4.0-98.121                                    amd64        Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
rc  lsb-core                                              4.1+Debian11ubuntu6.2                           amd64        Linux Standard Base 4.1 core support package
rc  luatex                                                0.76.0-3ubuntu1                                 amd64        next generation TeX engine
rc  mcp-account-manager-uoa                               3.8.6-0ubuntu9.2                                amd64        GNOME multi-protocol chat and call client (UOA plugin)
rc  openjdk-7-jre-headless:amd64                          7u151-2.6.11-0ubuntu1.14.04.1                   amd64        OpenJDK Java runtime, using Hotspot JIT (headless)
rc  opera                                                 12.16.1860                                      amd64        Fast and secure web browser and Internet suite
rc  overlay-scrollbar-gtk3:amd64                          0.2.16+r359+14.04.20131129-0ubuntu1             amd64        GTK 3 module for overlay scrollbars
rc  perl-modules                                          5.18.2-2ubuntu1.1                               all          Core Perl modules
rc  plexhometheater                                       1.4.2.000-201512091434-ubuntu87~ubuntu14.04.1   amd64        The most awesome Media Center you'll ever need.
rc  python-cupshelpers                                    1.4.3+20140219-0ubuntu2.6                       all          Python modules for printer configuration with CUPS
rc  python3.4                                             3.4.3-1ubuntu1~14.04.5                          amd64        Interactive high-level object-oriented language (version 3.4)
rc  python3.4-minimal                                     3.4.3-1ubuntu1~14.04.5                          amd64        Minimal subset of the Python language (version 3.4)
rc  rpm                                                   4.11.1-3ubuntu0.1                               amd64        package manager for RPM
rc  systemd-services                                      204-5ubuntu20.24                                amd64        systemd runtime services
rc  tsconf                                                1.0-12                                          all          touch screen library common files
rc  ttf-indic-fonts-core                                  1:0.5.14ubuntu1                                 all          Core collection of free fonts for languages of India
rc  ttf-punjabi-fonts                                     1:0.5.14ubuntu1                                 all          Free TrueType fonts for the Punjabi language
rc  unity-control-center-datetime                         13.10.0+14.04.20140205-0ubuntu1                 amd64        Clock settings in the Unity Control Center
rc  unity-lens-friends                                    0.1.3+14.04.20140317-0ubuntu1                   amd64        Friends scope for unity
rc  webaccounts-extension-common                          0.5-0ubuntu2.14.04.1                            amd64        Ubuntu Online Accounts browser extension - common files
Pour nettoyer les fichiers de configuration devenus sans objets, et marqués "rc" :
Le 22/07/2020, nany a écrit
dpkg -l | awk '/^rc/ && !/sql/{print $2}' | xargs -r sudo dpkg -P
Ok , c'est fait . Ensuite il faut faire quoi ?
 libcjs0c : Est en conflit avec: libcjs0 mais 2.8.0-1 devra être installé
Ils servent à quoi ces paquets ?

On les voit dans ce fil > [Résolu] flashplugin-installer
aline@pc-ubuntoo:~$ sudo apt-get install --reinstall cjs
[sudo] ...
The following additional packages will be installed:
  libcjs0
Les paquets suivants seront ENLEVÉS :
  libcjs0c
Les NOUVEAUX paquets suivants seront installés :
  libcjs0
Les paquets suivants seront mis à jour :
  cjs
1 mis à jour, 1 nouvellement installés, 1 à enlever et 0 non mis à jour.
Ils servent à quoi , bonne question , je n'en sais rien .
Il faut attendre des aidants de meilleur niveau.
Bonjour,

Donne le retour de 
sudo apt install -f