Plasma/Wayland/Nvidia
Running Nvidia Wayland
You need a very up-to-date Qt. Make sure you have > Qt5.15.0 or 4bd13402f0293e85b8dfdf92254e250ac28094c7 cherry-picked.
- Check our driver is running in modesettings mode
"cat /sys/module/nvidia_drm/parameters/modeset"
It should print "Y"
If so, you can skip the next step
- Modify your kernel command line.
Search for "kernel parameters" in your distribution and add the line "nvidia-drm.modeset=1" https://wiki.archlinux.org/index.php/Kernel_parameters is a good starting point
- Tell kwin to run with EGLStreams.
You should set the environment variable "KWIN_DRM_USE_EGL_STREAMS=1"
The easiest place is to add a file /etc/profile.d/kwin.sh with the line export KWIN_DRM_USE_EGL_STREAMS=1
Verify this is working with the command line tool "env" after rebooting.
- Select "Plasma (wayland)" from your login manager
- Enjoy your beautiful super-fast accelerated wayland desktop!