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. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1674304 Title: PRIME synchronization not working with xserver-1.19.x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1674304/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
