Ubuntu
nvidia-prime package

  1. Bug #1674304
  2. Comment #4

Comment 4 for bug 1674304

Revision history for this message
Mario Kleiner (mario-kleiner) wrote : Re: PRIME synchronization not working with xserver-1.19.x

Is the nvidia-drm module loaded and its drm modesetting enabled?

E.g., via kernel cmdline option nvidia_drm.modeset=1
cat /sys/module/nvidia_drm/parameters/modeset should be 1 or "Y"

I think that isn't needed for PRIME outputs, but it is needed for the new PRIME sync to work, so maybe not yet part of the nvidia-prime package/setup.

Downside is that multi-gpu SLI wouldn't work anymore, but then i assume there aren't any Optimus laptops with two discrete NVidia gpu's, so that's a non-issue.