Comment # 28 on bug 971907 from Takashi Iwai

(In reply to kolA flash from comment #27)
> (In reply to Larry Finger from comment #24)
> > I have just committed VB 5.0.17 to the build system. This version implements
> > using gdm as the window manager for the new versions of X.org that do not
> > run as root. X should start in both Gnome and KDE desktops.
> 
> Just updated to the current tumbleweed version, but still got that problem.
> 
> You mentioned gdm. But I'm using KDE and kdm.
> So does the fix only apply to gdm?
> What about lightdm?

lightdm should be OK.  If it doesn't work, it's a different issue.  Please open
another bug report.

AFAIK, KDE doesn't use lightdm but sddm as default.  And there seems another
bug, see comment 26.