Comment # 6 on bug 1139817 from Matwey Kornilov

(In reply to Stefan Dirsch from comment #3)
> Hmm. Could be that things look better (but slow!) with
> 
> Section "Device"
>   Identifier "Default Device"
>   Driver "modesetting" 
>   Option "AccelMethod" "none" 
> EndSection
> 
> in /etc/X11/xorg.conf.d/50-device.conf. Or with
> 
> Section "Device"
>   Identifier "Default Device"
>   Driver "intel" 
> EndSection
> 
> (not so slow) in the same file (package xf86-video-intel needs to be
> installed). Please provide /var/log/Xorg.0.log. Then we would likely have
> a Mesa driver problem.

Hi.

Unfortunately, the issue presents with both configurations.