Comment # 4 on bug 1079748 from Frank Kruger

(In reply to Michal Srb from comment #1)
> It could be the same issue as bug #1079465. Can you please test with Mesa
> packages from
> https://build.opensuse.org/project/show/home:michalsrb:branches:bnc1079465:
> X11:XOrg ?
> 
> Tumbleweed repository:
> https://download.opensuse.org/repositories/home:/michalsrb:/branches:/
> bnc1079465:/X11:/XOrg/openSUSE_Tumbleweed/
> 
> After installing the packages, delete the ~/.cache directory of affected
> users. For sddm it is /var/lib/sddm/.cache.

My TW20180205 system was working pretty well until today's update of the
above-mentioned Mesa packages via the Tumbleweed update repo: Now I have
encountered a white sddm screen and a black desktop (removing user's and sddm's
cache solved the issue). But was this to be expected?