Comment # 3 on bug 1159885 from Mario Penzel

(In reply to Takashi Iwai from comment #2)
> Care to report it to upstream?  The DRM subsystem has a gitlab issue tracker.
> 
> They may ask for testing with the latest upstream and you can try the kernel
> in OBS Kernel:HEAD and/or Kernel:linux-next, too.

Ok, found the issue-tracker on gitlab.freedesktop.org - I will report there
instead upon next appearance of fault.
Meanwhile a kernel update to 5.4.7-1.g34ebd00-default was released - without
any issues up to now.

Thanks for your attention