(In reply to Michel Dänzer from comment #13)
> (In reply to Christian Zigotzky from comment #12)
> > Any news? The issue still exists with the kernel 5.1-RC7.
> 
> I wouldn't expect anything to happen without the result of git bisect.

Hi Michel,

This is a bug report from an enduser. Endusers aren't able to git bisect. They
use the distributions for their daily work. I don't have these graphics cards
so I can't bisect it ether. The user told you what the problem is and we
figured out that the DRM updates 'drm-next-2018-12-14' [1] are the problem.

If you don't try to solve it then we will lost this support. PLEASE check your
code more carefully before you release it. There are a lot of endusers who uses
this code in they daily work later.

I will also look in the DRM updates deeper but I work for an enduser first
level support so I need a lot of time to understand the code. It's really
better you look in the DRM changes because you understand this code better than
me. 

Thanks,
Christian

[1]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4971f090aa7f6ce5daa094ce4334f6618f93a7eb