Comment # 14 on bug 1110985 from Vincent Petry

I've been experiencing similar freezes recently. Desktop stays visible, mouse
can move, music continues playing as normal, but no interaction possible.
No CPU load on X11 nor kwin.

Just now I managed to restore my desktop by going to a virtual terminal,
searching for the kwin_x11 process and killing it with `kill -9` then
restarting it with `kwin_x11 --replace`. I also killed plasmashell and
restarted it the same way. No lost work fortunately, for once.

It started happening after I reinstalled Tumbleweed about a month ago.

Hardware is Dell XPS 13 9333 with Intel driver (I'll attach hwinfo).
Compositor is on openGL 3.1.

This is without any workarounds. Before the reinstall, the desktop was stable.

S.B. did you try switching to UXA yet ? I might try that next as I think I had
it before the reinstall. I also remember having worse performance with UXA with
Youtube which is why I didn't reenable it yet.