Merci pour ton aide rapide ! je n'avais pas le pc à dispo, je n'ai pu faire les commandes d'aujourd'hui, les voici :
charles@PCP2-CC:~$ lspci -vnn | grep -A12 '\''[030[02]\]' | grep -Ei "vga|3d|display|kernel"
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation Device [10de:1f91] (rev a1) (prog-if 00 [VGA controller])
Kernel driver in use: nouveau
Kernel modules: nvidiafb, nouveau
05:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Picasso [1002:15d8] (rev c2) (prog-if 00 [VGA controller])
Kernel driver in use: amdgpu
Kernel modules: amdgpu
charles@PCP2-CC:~$ ubuntu-drivers devices
== /sys/devices/pci0000:00/0000:00:01.7/0000:04:00.0 ==
modalias : pci:v000010ECd0000C821sv00001A3Bsd00003041bc02sc80i00
vendor : Realtek Semiconductor Co., Ltd.
model : RTL8821CE 802.11ac PCIe Wireless Network Adapter
driver : rtl8821ce-dkms - distro free
== /sys/devices/pci0000:00/0000:00:01.1/0000:01:00.0 ==
modalias : pci:v000010DEd00001F91sv00001043sd0000109Fbc03sc00i00
vendor : NVIDIA Corporation
driver : nvidia-driver-450 - distro non-free
driver : nvidia-driver-435 - distro non-free
driver : nvidia-driver-418-server - distro non-free
driver : nvidia-driver-450-server - distro non-free recommended
driver : nvidia-driver-440-server - distro non-free
driver : xserver-xorg-video-nouveau - distro free builtin
charles@PCP2-CC:~$ uname -a
Linux PCP2-CC 5.4.0-52-generic #57~18.04.1-Ubuntu SMP Thu Oct 15 14:04:49 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
charles@PCP2-CC:~$ xrandr
Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 16384 x 16384
eDP connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
1920x1080 59.93*+ 39.99
1680x1050 59.93
1280x1024 59.93
1440x900 59.93
1280x800 59.93
1280x720 59.93
1024x768 59.93
800x600 59.93
640x480 59.93
HDMI-1-1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 477mm x 268mm
1920x1080 60.00*+ 59.96 59.93
1680x1050 69.88 59.95 59.88
1600x1024 60.17
1400x1050 74.76 70.00 59.98
1600x900 59.95 59.82
1280x1024 75.02 60.02
1440x900 59.89 59.90
1400x900 59.96 59.88
1280x960 60.00
1440x810 59.97
1368x768 59.88 59.85
1360x768 59.80 59.96
1280x800 59.99 59.97 59.81 59.91
1152x864 75.00 75.00 70.00 60.00
1280x720 60.00 59.99 59.86 60.00 59.74
1024x768 75.05 60.04 75.03 70.07 60.00
960x720 75.00 60.00
928x696 75.00 60.05
896x672 75.05 60.01
1024x576 59.95 59.96 59.90 59.82
960x600 59.93 60.00
832x624 74.55
960x540 59.96 59.99 59.63 59.82
800x600 75.00 70.00 65.00 60.00 72.19 75.00 60.32 56.25
840x525 74.96 69.88 60.01 59.88
864x486 59.92 59.57
800x512 60.17
700x525 74.76 70.06 59.98
800x450 59.95 59.82
640x512 75.02 60.02
720x450 59.89
700x450 59.96 59.88
640x480 60.00 75.00 72.81 75.00 66.67 59.94
720x405 59.51 58.99
720x400 70.08
684x384 59.88 59.85
680x384 59.80 59.96
640x400 59.88 59.98
576x432 75.00 75.00 70.00 60.06
640x360 59.86 59.83 59.84 59.32
512x384 75.03 70.07 60.00
512x288 60.00 59.92
416x312 74.66
480x270 59.63 59.82
400x300 72.19 75.12 60.32 56.34
432x243 59.92 59.57
320x240 72.81 75.00 60.05
360x202 59.51 59.13
320x180 59.84 59.32
1920x1080 (0x55) 138.500MHz +HSync -VSync
h: width 1920 start 1968 end 2000 total 2080 skew 0 clock 66.59KHz
v: height 1080 start 1083 end 1088 total 1111 clock 59.93Hz
charles@PCP2-CC:~$ dpkg -l | grep nvidia
rc libnvidia-compute-435:amd64 435.21-0ubuntu0.18.04.3 amd64 NVIDIA libcompute package
rc libnvidia-compute-440-server:amd64 440.95.01-0ubuntu0.18.04.1 amd64 NVIDIA libcompute package
rc libnvidia-compute-450-server:amd64 450.80.02-0ubuntu0.18.04.3 amd64 NVIDIA libcompute package
rc nvidia-compute-utils-435 435.21-0ubuntu0.18.04.3 amd64 NVIDIA compute utilities
rc nvidia-compute-utils-440-server 440.95.01-0ubuntu0.18.04.1 amd64 NVIDIA compute utilities
rc nvidia-compute-utils-450-server 450.80.02-0ubuntu0.18.04.3 amd64 NVIDIA compute utilities
rc nvidia-dkms-435 435.21-0ubuntu0.18.04.3 amd64 NVIDIA DKMS package
rc nvidia-dkms-440-server 440.95.01-0ubuntu0.18.04.1 amd64 NVIDIA DKMS package
rc nvidia-dkms-450-server 450.80.02-0ubuntu0.18.04.3 amd64 NVIDIA DKMS package
rc nvidia-kernel-common-435 435.21-0ubuntu0.18.04.3 amd64 Shared files used with the kernel module
rc nvidia-kernel-common-440-server 440.95.01-0ubuntu0.18.04.1 amd64 Shared files used with the kernel module
rc nvidia-kernel-common-450-server 450.80.02-0ubuntu0.18.04.3 amd64 Shared files used with the kernel module
ii nvidia-prime 0.8.8.2 all Tools to enable NVIDIA's Prime
rc nvidia-settings 440.82-0ubuntu0.18.04.1 amd64 Tool for configuring the NVIDIA graphics driver
charles@PCP2-CC:~$ 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 libgl1-mesa-dri:i386 20.0.8-0ubuntu1~18.04.1 i386 free implementation of the OpenGL API -- DRI modules
rc libnvidia-compute-435:amd64 435.21-0ubuntu0.18.04.3 amd64 NVIDIA libcompute package
rc libnvidia-compute-440-server:amd64 440.95.01-0ubuntu0.18.04.1 amd64 NVIDIA libcompute package
rc libnvidia-compute-450-server:amd64 450.80.02-0ubuntu0.18.04.3 amd64 NVIDIA libcompute package
rc libsensors4:i386 1:3.4.0-4 i386 library to read temperature/voltage/fan sensors
rc libxext6:i386 2:1.3.3-1 i386 X11 miscellaneous extension library
rc libxxf86vm1:i386 1:1.1.4-1 i386 X11 XFree86 video mode extension library
rc linux-image-5.4.0-42-generic 5.4.0-42.46~18.04.1 amd64 Signed kernel image generic
rc linux-image-5.4.0-47-generic 5.4.0-47.51~18.04.1 amd64 Signed kernel image generic
rc linux-modules-5.4.0-42-generic 5.4.0-42.46~18.04.1 amd64 Linux kernel extra modules for version 5.4.0 on 64 bit x86 SMP
rc linux-modules-5.4.0-47-generic 5.4.0-47.51~18.04.1 amd64 Linux kernel extra modules for version 5.4.0 on 64 bit x86 SMP
rc linux-modules-extra-5.4.0-42-generic 5.4.0-42.46~18.04.1 amd64 Linux kernel extra modules for version 5.4.0 on 64 bit x86 SMP
rc linux-modules-extra-5.4.0-47-generic 5.4.0-47.51~18.04.1 amd64 Linux kernel extra modules for version 5.4.0 on 64 bit x86 SMP
rc nvidia-compute-utils-435 435.21-0ubuntu0.18.04.3 amd64 NVIDIA compute utilities
rc nvidia-compute-utils-440-server 440.95.01-0ubuntu0.18.04.1 amd64 NVIDIA compute utilities
rc nvidia-compute-utils-450-server 450.80.02-0ubuntu0.18.04.3 amd64 NVIDIA compute utilities
rc nvidia-dkms-435 435.21-0ubuntu0.18.04.3 amd64 NVIDIA DKMS package
rc nvidia-dkms-440-server 440.95.01-0ubuntu0.18.04.1 amd64 NVIDIA DKMS package
rc nvidia-dkms-450-server 450.80.02-0ubuntu0.18.04.3 amd64 NVIDIA DKMS package
rc nvidia-kernel-common-435 435.21-0ubuntu0.18.04.3 amd64 Shared files used with the kernel module
rc nvidia-kernel-common-440-server 440.95.01-0ubuntu0.18.04.1 amd64 Shared files used with the kernel module
rc nvidia-kernel-common-450-server 450.80.02-0ubuntu0.18.04.3 amd64 Shared files used with the kernel module
rc nvidia-settings 440.82-0ubuntu0.18.04.1 amd64 Tool for configuring the NVIDIA graphics driver
rc screen-resolution-extra 0.17.3 all Extension for the GNOME screen resolution applet
Je ne sais pas trop quelle conclusion tirer de ces infos... l'écran est bien détecté par ubuntu avec la bonne résolution et la bonne fréquence...