Log out of Plasma and login on Ctrl-Alt-F3, then:
rm ~/.cache/*
From Konsole right after freshly logging into Plasma, provide input/output from:
inxi -SGxxxyz
cat /var/log/Xorg.0.log | susepaste
lsmod | grep veau
cat ~/.xsession-errors
Log out of Plasma and login on Ctrl-Alt-F3, then:
rm ~/.cache/*
From Konsole right after freshly logging into Plasma, provide input/output from:
inxi -SGxxxyz
cat /var/log/Xorg.0.log | susepaste
lsmod | grep veau
cat ~/.xsession-errors