Comment # 30 on bug 1180749 from Antony J.R

(In reply to Takashi Iwai from comment #27)
> OK, finally got some good news.
> 
> I'm rebuilding the KMP again with a patch to add a module option
> "aux_backlight" instead of blindly disabling the aux backlight.  So keep
> your working KMP for now, and check later the new KMP and test with
>   amdgpu.aux_backlight=0
> boot option.  This is no solution but an acceptable workaround, I suppose.
> 
> I'm going to submit two patches to upstream.
> 

Yes it's okay but the official kernel maintainer and openSUSE is not going to
accept this patch so I can see that the official support is very far away :P

> Oh, BTW, which value was shown in the "XXX ext_caps=..." line?

[    7.872674] amdgpu: XXX ext_caps=0xa7