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2nd screen detected but black (Xubuntu 20.04, Nvidia gpu)

rated 0 times [ 0] [ 0] / answers: 1 / hits: 472 / 1 Year ago, tue, may 9, 2023, 9:23:56

Good evening everybody, I'm a beginner on Ubuntu. I almost successfully installed Xubuntu 20.04. I say almost because I'm not able to make my external screen work. It has been difficult to mke it recognised (Nvidia driver 455 was just unable to do it). I downgraded to the driver 450 : screen recognised but black.

Does anyone have a solution ? Don't hesitate if you need more specific hints.

Hope the followings can help :)

Best regards,

Jimmy

    j@j-Nitro-AN515-44:~$ lspci -vnn | grep -A12 '''[030[02]]' | grep -Ei "vga|3d|display|kernel"

01:00.0 VGA compatible controller [0300]: NVIDIA Corporation Device [10de:1f95] (rev a1) (prog-if 00 [VGA controller])

    Kernel driver in use: nvidia

    Kernel modules: nvidiafb, nouveau, nvidia_drm, nvidia

05:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Renoir [1002:1636] (rev c7) (prog-if 00 [VGA controller])

    Kernel driver in use: amdgpu

    Kernel modules: amdgpu

j@j-Nitro-AN515-44:~$



j@j-Nitro-AN515-44:~$ uname -a

Linux s-Nitro-AN515-44 5.8.0-33-generic #36~20.04.1-Ubuntu SMP Wed Dec 9 17:01:13 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

j@j-Nitro-AN515-44:~$ 



j@j-Nitro-AN515-44:~$ 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 193mm

   1920x1080     60.01*+

   1680x1050     60.01  

   1280x1024     60.01  

   1440x900      60.01  

   1280x800      60.01  

   1280x720      60.01  

   1024x768      60.01  

   800x600       60.01  

   640x480       60.01  

HDMI-1-0 connected 1920x1080+1920+0 531mm x 299mm

   1920x1080     60.00*+

   1680x1050     59.95  

   1440x900      74.98    59.89  

   1280x1024     75.02    60.02  

   1280x720      60.00  

   1024x768      75.03    60.00  

   800x600       75.00    60.32  

   640x480       75.00    72.81    59.94  

j@j-Nitro-AN515-44:~$ 



j@j-Nitro-AN515-44:~$ 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  libnvidia-compute-455:amd64               455.38-0ubuntu0.20.04.1               amd64        NVIDIA libcompute package

rc  libpython2.7-minimal:amd64                2.7.18-1~20.04                        amd64        Minimal subset of the Python language (version 2.7)

rc  linux-image-5.4.0-42-generic              5.4.0-42.46                           amd64        Signed kernel image generic

rc  linux-image-5.4.0-54-generic              5.4.0-54.60                           amd64        Signed kernel image generic

rc  linux-modules-5.4.0-42-generic            5.4.0-42.46                           amd64        Linux kernel extra modules for version 5.4.0 on 64 bit x86 SMP

rc  linux-modules-5.4.0-54-generic            5.4.0-54.60                           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                           amd64        Linux kernel extra modules for version 5.4.0 on 64 bit x86 SMP

rc  linux-modules-extra-5.4.0-54-generic      5.4.0-54.60                           amd64        Linux kernel extra modules for version 5.4.0 on 64 bit x86 SMP

rc  linux-modules-nvidia-455-5.4.0-54-generic 5.4.0-54.60                           amd64        Linux kernel nvidia modules for version 5.4.0-54

rc  nvidia-compute-utils-455                  455.38-0ubuntu0.20.04.1               amd64        NVIDIA compute utilities

rc  nvidia-dkms-455                           455.38-0ubuntu0.20.04.1               amd64        NVIDIA DKMS package

rc  nvidia-kernel-common-455                  455.38-0ubuntu0.20.04.1               amd64        Shared files used with the kernel module

rc  python2.7-minimal                         2.7.18-1~20.04                        amd64        Minimal subset of the Python language (version 2.7)

j@j-Nitro-AN515-44:~$ 



j@j-Nitro-AN515-44:~$ dpkg -l | grep nvidia

ii  libnvidia-cfg1-450:amd64                  450.80.02-0ubuntu0.20.04.2            amd64        NVIDIA binary OpenGL/GLX configuration library

ii  libnvidia-common-450                      450.80.02-0ubuntu0.20.04.2            all          Shared files used by the NVIDIA libraries

ii  libnvidia-compute-450:amd64               450.80.02-0ubuntu0.20.04.2            amd64        NVIDIA libcompute package

ii  libnvidia-compute-450:i386                450.80.02-0ubuntu0.20.04.2            i386         NVIDIA libcompute package

rc  libnvidia-compute-455:amd64               455.38-0ubuntu0.20.04.1               amd64        NVIDIA libcompute package

ii  libnvidia-decode-450:amd64                450.80.02-0ubuntu0.20.04.2            amd64        NVIDIA Video Decoding runtime libraries

ii  libnvidia-decode-450:i386                 450.80.02-0ubuntu0.20.04.2            i386         NVIDIA Video Decoding runtime libraries

ii  libnvidia-encode-450:amd64                450.80.02-0ubuntu0.20.04.2            amd64        NVENC Video Encoding runtime library

ii  libnvidia-encode-450:i386                 450.80.02-0ubuntu0.20.04.2            i386         NVENC Video Encoding runtime library

ii  libnvidia-extra-450:amd64                 450.80.02-0ubuntu0.20.04.2            amd64        Extra libraries for the NVIDIA driver

ii  libnvidia-fbc1-450:amd64                  450.80.02-0ubuntu0.20.04.2            amd64        NVIDIA OpenGL-based Framebuffer Capture runtime library

ii  libnvidia-fbc1-450:i386                   450.80.02-0ubuntu0.20.04.2            i386         NVIDIA OpenGL-based Framebuffer Capture runtime library

ii  libnvidia-gl-450:amd64                    450.80.02-0ubuntu0.20.04.2            amd64        NVIDIA OpenGL/GLX/EGL/GLES GLVND libraries and Vulkan ICD

ii  libnvidia-gl-450:i386                     450.80.02-0ubuntu0.20.04.2            i386         NVIDIA OpenGL/GLX/EGL/GLES GLVND libraries and Vulkan ICD

ii  libnvidia-ifr1-450:amd64                  450.80.02-0ubuntu0.20.04.2            amd64        NVIDIA OpenGL-based Inband Frame Readback runtime library

ii  libnvidia-ifr1-450:i386                   450.80.02-0ubuntu0.20.04.2            i386         NVIDIA OpenGL-based Inband Frame Readback runtime library

rc  linux-modules-nvidia-455-5.4.0-54-generic 5.4.0-54.60                           amd64        Linux kernel nvidia modules for version 5.4.0-54

ii  linux-modules-nvidia-455-5.4.0-58-generic 5.4.0-58.64                           amd64        Linux kernel nvidia modules for version 5.4.0-58

ii  nvidia-compute-utils-450                  450.80.02-0ubuntu0.20.04.2            amd64        NVIDIA compute utilities

rc  nvidia-compute-utils-455                  455.38-0ubuntu0.20.04.1               amd64        NVIDIA compute utilities

ii  nvidia-dkms-450                           450.80.02-0ubuntu0.20.04.2            amd64        NVIDIA DKMS package

rc  nvidia-dkms-455                           455.38-0ubuntu0.20.04.1               amd64        NVIDIA DKMS package

ii  nvidia-driver-430                         440.100-0ubuntu0.20.04.1              amd64        Transitional package for nvidia-driver-440

ii  nvidia-driver-440                         450.80.02-0ubuntu0.20.04.2            amd64        Transitional package for nvidia-driver-450

ii  nvidia-driver-450                         450.80.02-0ubuntu0.20.04.2            amd64        NVIDIA driver metapackage

ii  nvidia-kernel-common-450                  450.80.02-0ubuntu0.20.04.2            amd64        Shared files used with the kernel module

rc  nvidia-kernel-common-455                  455.38-0ubuntu0.20.04.1               amd64        Shared files used with the kernel module

ii  nvidia-kernel-source-450                  450.80.02-0ubuntu0.20.04.2            amd64        NVIDIA kernel source package

ii  nvidia-prime                              0.8.14                                all          Tools to enable NVIDIA's Prime

ii  nvidia-settings                           440.82-0ubuntu0.20.04.1               amd64        Tool for configuring the NVIDIA graphics driver

ii  nvidia-utils-450                          450.80.02-0ubuntu0.20.04.2            amd64        NVIDIA driver support binaries

ii  screen-resolution-extra                   0.18build1                            all          Extension for the nvidia-settings control panel

ii  xserver-xorg-video-nvidia-450             450.80.02-0ubuntu0.20.04.2            amd64        NVIDIA binary Xorg driver

j@j-Nitro-AN515-44:~$

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answered 1 Year ago azaaburge · Accepted Answer

Good evening,

I found my answer here :
nvidia-ubuntu-20-04-hdmi-second-monitor-with-blank-screen-but-xrandr-detect

I have to say I have not understood the final aim of the following modifications but locked for locked, I tried, even if I risked to have to reinstall everything.

I "just" need to modify the files 10-amdgpu.conf and 10-nvidia.conf located here /usr/share/X11/xorg.conf.d
First, you need to be authorized to write in these files :

j@j-Nitro-AN515-44:~$ sudo chmod o+w /usr/share/X11/xorg.conf.d/10-amdgpu.conf

j@j-Nitro-AN515-44:~$ sudo chmod o+w /usr/share/X11/xorg.conf.d/10-nvidia.conf

Then :

Open the file 10-amdgpu.conf, replace the line Driver "amdgpu" by Driver "modesetting" and save.

Open the file 10-nvidia.conf, add the line Option "PrimaryGPU" "Yes" just before the line EndSection and save.

Hope it will help someone else !

If someone has an explanation about the final aim of the modified/added lines, I'm interested. I'd like to learn to fish :)

Have a good night,

Jimmy