Comment # 23 on bug 1134805 from Felix Miata

(In reply to Mindaugas Baranauskas from comment #0)
> > rpm --changelog -q xf86-video-modesetting | head -n3 
> package xf86-video-modesetting is not installed

xf86-video-modesetting is not installed because it was merged into the xserver
package more than two years ago, which made it the default. All xf86-video* are
optional, and for nearly all the most common, non-ancient gfxchips, not
required.

(In reply to Stefan Dirsch from comment #18)
> At least we now have a workaround for Mindaugas' 32bit machine from 2005.
> Dumb slow, but what can we do? Nobody will still look into RS400 issues.
> Seriously.

Since it doesn't happen to me on KDE3 using xf86-video-radeon, maybe it should
be looked at by KDE and/or SDDM people.

I think if this is reproducible on antiX and reported there it will get fixed,
but according to distrowatch, antiX doesn't offer Plasma.