I have tried to run Gnome Wayland and Plasma Wayland with proprietary Nvidia on Ubuntu 20.04, but haven't succeeded in 2 hours of trying.
I edited /etc/default/grub and added
nvidia-drm.modeset=1 at the end of
Then I ran
# grub-mkconfig -o /boot/grub/grub.cfg
# update-initramfs -u
I created a /etc/profile.d/kwin.sh file that contains
I made sure that /etc/gdm3/custom.conf contains
I commented out the "gdm-disable-wayland" line for the nvidia driver in
I rebooted after each change.
# cat /sys/module/nvidia_drm/parameters/modeset
even says Y
But gdm3 doesn't show Wayland.
After switching from gdm3 to sddm I saw Wayland options:
Ubuntu Wayland exited back to the login screen.
Plasma Wayland froze right after login with a black screen.
Now, after 2 hours, I rebooted to an older Debian Testing with Nouveau and Gnome Wayland worked out of the box.
Plasma Wayland froze after some taskbar animations, but I haven't updated this system for a longer time. Will try it again after updating. I will also keep trying to enable EGLStreams for a basic test.