ThinkPad X1 Gen 3 + Ubuntu 20.04: Blank screen on external monitor

Graphics / Linux Linux
3

Yes, I went through the instructions in Black screen after install of nvidia driver ubuntu with no help.

Re PrimaryGPU, since I guess this is what you meant -
I just googled a bit and did the following, based on https://docs.fedoraproject.org/en-US/quick-docs/how-to-set-nvidia-as-primary-gpu-on-optimus-based-laptops/:

  1. copy /usr/share/X11/xorg.conf.d/10-nvidia.conf to (newly created) /etc/X11/xorg.conf.d/

  2. edit the file to add PrimaryGPU option:

anton@Anton-X1:~$ cat /etc/X11/xorg.conf.d/10-nvidia.conf
Section "OutputClass"
    Identifier "nvidia"
    MatchDriver "nvidia-drm"
    Driver "nvidia"
    Option "AllowEmptyInitialConfiguration"
    Option "PrimaryGPU" "Yes"
    ModulePath "/usr/lib/x86_64-linux-gnu/nvidia/xorg"
EndSection

anton@Anton-X1:~$
  1. reboot

Unfortunately, this did not help.

Fresh bug report is attached -
nvidia-bug-report.log.gz (428.3 KB)