Ah, oui, j'avais zappé:
yet@yet-VivoBook-X512DA-F512DA:~$ sudo lshw -c display
*-display
description: VGA compatible controller
produit: Picasso
fabricant: Advanced Micro Devices, Inc. [AMD/ATI]
identifiant matériel: 0
information bus: pci@0000:03:00.0
version: c2
bits: 64 bits
horloge: 33MHz
fonctionnalités: pm pciexpress msi msix vga_controller bus_master cap_list
configuration : driver=amdgpu latency=0
ressources : irq:52 mémoire:e0000000-efffffff mémoire:f0000000-f01fffff portE/S:f000(taille=256) mémoire:fe700000-fe77ffff
yet@yet-VivoBook-X512DA-F512DA:~$
yet@yet-VivoBook-X512DA-F512DA:~$ dmesg | grep amdgpu
[ 0.924345] [drm] amdgpu kernel modesetting enabled.
[ 0.924545] amdgpu 0000:03:00.0: remove_conflicting_pci_framebuffers: bar 0: 0xe0000000 -> 0xefffffff
[ 0.924546] amdgpu 0000:03:00.0: remove_conflicting_pci_framebuffers: bar 2: 0xf0000000 -> 0xf01fffff
[ 0.924548] amdgpu 0000:03:00.0: remove_conflicting_pci_framebuffers: bar 5: 0xfe700000 -> 0xfe77ffff
[ 0.924550] fb0: switching to amdgpudrmfb from EFI VGA
[ 0.924615] amdgpu 0000:03:00.0: vgaarb: deactivate vga console
[ 0.924659] amdgpu 0000:03:00.0: enabling device (0006 -> 0007)
[ 0.925129] amdgpu 0000:03:00.0: VRAM: 2048M 0x000000F400000000 - 0x000000F47FFFFFFF (2048M used)
[ 0.925130] amdgpu 0000:03:00.0: GART: 1024M 0x0000000000000000 - 0x000000003FFFFFFF
[ 0.925131] amdgpu 0000:03:00.0: AGP: 267419648M 0x000000F800000000 - 0x0000FFFFFFFFFFFF
[ 0.925295] [drm] amdgpu: 2048M of VRAM memory ready
[ 0.925297] [drm] amdgpu: 3072M of GTT memory ready.
[ 0.928516] amdgpu: [powerplay] hwmgr_sw_init smu backed is smu10_smu
[ 1.232650] fbcon: amdgpudrmfb (fb0) is primary device
[ 1.232653] amdgpu 0000:03:00.0: fb0: amdgpudrmfb frame buffer device
[ 1.245935] amdgpu 0000:03:00.0: ring gfx uses VM inv eng 0 on hub 0
[ 1.245937] amdgpu 0000:03:00.0: ring comp_1.0.0 uses VM inv eng 1 on hub 0
[ 1.245938] amdgpu 0000:03:00.0: ring comp_1.1.0 uses VM inv eng 4 on hub 0
[ 1.245939] amdgpu 0000:03:00.0: ring comp_1.2.0 uses VM inv eng 5 on hub 0
[ 1.245940] amdgpu 0000:03:00.0: ring comp_1.3.0 uses VM inv eng 6 on hub 0
[ 1.245941] amdgpu 0000:03:00.0: ring comp_1.0.1 uses VM inv eng 7 on hub 0
[ 1.245943] amdgpu 0000:03:00.0: ring comp_1.1.1 uses VM inv eng 8 on hub 0
[ 1.245944] amdgpu 0000:03:00.0: ring comp_1.2.1 uses VM inv eng 9 on hub 0
[ 1.245945] amdgpu 0000:03:00.0: ring comp_1.3.1 uses VM inv eng 10 on hub 0
[ 1.245946] amdgpu 0000:03:00.0: ring kiq_2.1.0 uses VM inv eng 11 on hub 0
[ 1.245947] amdgpu 0000:03:00.0: ring sdma0 uses VM inv eng 0 on hub 1
[ 1.245948] amdgpu 0000:03:00.0: ring vcn_dec uses VM inv eng 1 on hub 1
[ 1.245949] amdgpu 0000:03:00.0: ring vcn_enc0 uses VM inv eng 4 on hub 1
[ 1.245950] amdgpu 0000:03:00.0: ring vcn_enc1 uses VM inv eng 5 on hub 1
[ 1.245951] amdgpu 0000:03:00.0: ring vcn_jpeg uses VM inv eng 6 on hub 1
[ 1.262137] [drm] Initialized amdgpu 3.35.0 20150101 for 0000:03:00.0 on minor 0
[ 9.629538] snd_hda_intel 0000:
yet@yet-VivoBook-X512DA-F512DA:~$ dpkg -l linux-firmware
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
+++-==============-============-============-=================================
ii linux-firmware 1.187.3 all Firmware for Linux kernel drivers
yet@yet-VivoBook-X512DA-F512DA:~$
et pour /var/log/apt/history.log:
Start-Date: 2020-09-01 19:32:12
Commandline: aptdaemon role='role-commit-packages' sender=':1.122'
Install: linux-modules-extra-5.4.0-45-generic:amd64 (5.4.0-45.49, automatic), linux-headers-5.4.0-45-generic:amd64 (5.4.0-45.49, automatic), linux-modules-5.4.0-45-generic:amd64 (5.4.0-45.49, automatic), linux-headers-5.4.0-45:amd64 (5.4.0-45.49, automatic), linux-image-5.4.0-45-generic:amd64 (5.4.0-45.49, automatic)
Upgrade: libpam0g:amd64 (1.3.1-5ubuntu4, 1.3.1-5ubuntu4.1), libreoffice-math:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), uno-libs-private:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), linux-headers-generic:amd64 (5.4.0.42.46, 5.4.0.45.49), libridl-java:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), alsa-ucm-conf:amd64 (1.2.2-1ubuntu0.1, 1.2.2-1ubuntu0.2), libuno-salhelpergcc3-3:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), libpam-modules:amd64 (1.3.1-5ubuntu4, 1.3.1-5ubuntu4.1), libreoffice-gtk3:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), grub-common:amd64 (2.04-1ubuntu26.2, 2.04-1ubuntu26.3), linux-image-generic:amd64 (5.4.0.42.46, 5.4.0.45.49), libjuh-java:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), libreoffice-core:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), libreoffice-l10n-en-gb:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), libreoffice-l10n-en-za:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), simple-scan:amd64 (3.36.0-0ubuntu1, 3.36.3-0ubuntu0.20.04.0), grub2-common:amd64 (2.04-1ubuntu26.2, 2.04-1ubuntu26.3), libreoffice-l10n-fr:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), libpam-runtime:amd64 (1.3.1-5ubuntu4, 1.3.1-5ubuntu4.1), libisc-export1105:amd64 (1:9.11.16+dfsg-3~build1, 1:9.11.16+dfsg-3~ubuntu1), libmutter-6-0:amd64 (3.36.3-0ubuntu0.20.04.1, 3.36.4-0ubuntu0.20.04.2), grub-pc:amd64 (2.04-1ubuntu26.2, 2.04-1ubuntu26.3), python3-uno:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), libuno-cppuhelpergcc3-3:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), rsyslog:amd64 (8.2001.0-1ubuntu1, 8.2001.0-1ubuntu1.1), mutter-common:amd64 (3.36.3-0ubuntu0.20.04.1, 3.36.4-0ubuntu0.20.04.2), libreoffice-base-core:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), grub-pc-bin:amd64 (2.04-1ubuntu26.2, 2.04-1ubuntu26.3), apport:amd64 (2.20.11-0ubuntu27.6, 2.20.11-0ubuntu27.8), libuno-purpenvhelpergcc3-3:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), libreoffice-impress:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), libreoffice-style-elementary:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), grub-efi-amd64-bin:amd64 (2.04-1ubuntu26.2, 2.04-1ubuntu26.3), libreoffice-help-fr:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), chromium-browser:amd64 (84.0.4147.105-0ubuntu0.18.04.1, 84.0.4147.105-0ubuntu0.20.04.1), python3-apport:amd64 (2.20.11-0ubuntu27.6, 2.20.11-0ubuntu27.8), libjurt-java:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), libreoffice-help-common:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), chromium-codecs-ffmpeg-extra:amd64 (84.0.4147.105-0ubuntu0.18.04.1, 84.0.4147.105-0ubuntu0.20.04.1), libreoffice-style-colibre:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), ure:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), libreoffice-writer:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), libreoffice-common:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), xz-utils:amd64 (5.2.4-1, 5.2.4-1ubuntu1), linux-generic-hwe-18.04:amd64 (5.4.0.42.46, 5.4.0.45.49), libpam-modules-bin:amd64 (1.3.1-5ubuntu4, 1.3.1-5ubuntu4.1), libdns-export1109:amd64 (1:9.11.16+dfsg-3~build1, 1:9.11.16+dfsg-3~ubuntu1), libuno-cppu3:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), apport-gtk:amd64 (2.20.11-0ubuntu27.6, 2.20.11-0ubuntu27.8), grub-efi-amd64-signed:amd64 (1.142.4+2.04-1ubuntu26.2, 1.142.5+2.04-1ubuntu26.3), fonts-opensymbol:amd64 (2:102.11+LibO6.4.4-0ubuntu0.20.04.1, 2:102.11+LibO6.4.5-0ubuntu0.20.04.1), libreoffice-style-tango:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), libuno-sal3:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), linux-firmware:amd64 (1.187.2, 1.187.3), libreoffice-help-en-gb:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), libreoffice-help-en-us:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), libreoffice-gnome:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), libunoloader-java:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), chromium-browser-l10n:amd64 (84.0.4147.105-0ubuntu0.18.04.1, 84.0.4147.105-0ubuntu0.20.04.1), liblzma5:amd64 (5.2.4-1, 5.2.4-1ubuntu1), libreoffice-calc:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1), linux-generic:amd64 (5.4.0.42.46, 5.4.0.45.49), python3-problem-report:amd64 (2.20.11-0ubuntu27.6, 2.20.11-0ubuntu27.8), libreoffice-draw:amd64 (1:6.4.4-0ubuntu0.20.04.1, 1:6.4.5-0ubuntu0.20.04.1)
End-Date: 2020-09-01 19:38:10