--- Comment #30 from Antony J.R email@example.com --- (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