black screen of death for Lemur Pro at PopOS

[antonkulaga]

I tried to use egpu-switcher on the latest System76 Lemur Pro with the latest 495 drivers and got a black screen when I bott with eGPU

[hertg]

Would #95 help in your case? Try removing the modesetting Module from /etc/X11/xorg.conf.d/99-egpu-switcher.conf, and see if that changes anything.

You may need to boot with the egpu connected (so this file gets generated), switch to a different tty (ctrl + alt + F2), modify the file and then reboot

[antonkulaga]

@hertg I did exactly what you told me, which did not work. I also switched to newer 525 driver and it had not effect as well.

[1beb]

Hello, I had a similar although not exactly the same issue where PopOS was loading to a black screen with a blinking underscore. I could see in nvidia-smi that the eGPU was recognized but for whatever reason not being used.

# swap to tty (ctrl + alt + f5, you may need ctrl + fn + alt + f5 from a laptop)
rm .config/monitors.xml # might end in ~ for you
sudo egpu-switcher disable
# unplug egpu
sudo system76-power graphics hybrid
sudo shutdown -r now 
sudo X -configure
# Plugin egpu
sudo egpu-switchter enable
sudo egpu-switcher switch
sudo shutdown -r now
# it worked after the next restart