Comment # 22 on bug 1222156 from Togan Muftuoglu

(In reply to Stefan Dirsch from comment #18)
> @Togan
> 
> You're using 
> 
>   radeon.si_support=0 amdgpu.si_support=1
> 
> right? I believe with that radeon kernel module is still being loaded but
> doesn't initialize anything. So just amdgpu is active in that case.
> 
> Usage of radeonsi DRI driver for 2D acceleration in Xserver is hardcoded. So
> this stays.
> 
> radeonsi also stays for Mesa, because that's the radeon driver for current
> AMD Radeon cards and r300 and r600 is only for older cards.
> 
> So could be that latest radeonsi Mesa driver triggers a bug in latest radeon
> kernel module.

That is correct I am using the radeon.si_support=0 amdgpu.si_support=1 in the
cmdline as it is the only way I can have a graphical display. Previously I
didn'd need that.