Comment # 9 on bug 1196213 from Takashi Iwai

Thanks!  So the new messages don't look like the same cause as the original
description.

I built a test kernel with a revert of two relevant backport patches.  The
kernel is available in OBS home:tiwai:bsc1196213 repo.  Could you give it a
try?
Note that it's an unofficial build, hence disable Secure Boot beforehand.