Comment # 7 on bug 1103356 from Takashi Iwai

(In reply to Thomas Blume from comment #6)
> The problem doesn't happen with the Leap 42.3 kernel on top of Leap 15.
> It returns when installing the tumbleweed kernel on Leap 15.

Thanks, so this is a still remaining regression.
Could you report it to upstream?  e.g. bugzilla.freedesktop.org category
DRI/Nouveau.

> Checking the kernel log for differences, I've found that the message below
> is only shown with the 42.3 kernel:
> 
> -->
> 2018-08-01T12:48:09.794514+02:00 linux-rr7g kernel: [    7.769999] nouveau
> 0000:01:00.0: DRM: 0xC73F: Parsing digital output script table
> --<

This is a part of BIOS parsing stuff, so something might be missing in the
recent kernel relevant with it...