Created attachment 683225 [details]
journald log with unsuccessfull wayland session

i am using openSUSE x86_64 Tumbleweed on a notebook with a geforce gtx 765m
with the latest proprietary nvidia driver 367.27.

Xorg is working fine without problems.

today i updated to latest kde framework 5.7.0, and had the idea of trying out
wayland, as i read that kde framework 5.7.0 should at least support wayland in
some way.

but it does not work at all.

if i select the Wayland plasma session from the wayland sessions from sddm (the
one which comes from the config file
/usr/share/wayland-sessions/plasmawayland.desktop which comes from the package
plasma5-session-wayland) and trying to login, i only see a black screen for
some seconds, and then i am back at the sddm greetings screen.

i have attached the part of journald logs where the unsuccessfull login
happens:
at 17:18:04 you can see the attempt to start new session using
/usr/share/wayland-sessions/plasmawayland.desktop.
at about 17:18:11 you can see that it was not successfull and then i selected
the normal Xorg based session /usr/share/xsessions/kde-plasma.desktop and loged
in successfully.

what did i wrong?
why does it not even start the session?