(In reply to Dieter Nützel from comment #7)
> (In reply to Alex Deucher from comment #6)
> > Can you bisect?
> 
> So I have to go before your -rc1 merge?

Alex,

my reportet drm-next-4.1-wip error
[drm:radeon_atom_pick_dig_encoder [radeon]] *ERROR* chosen encoder in use 4
is related to this.

If I reenable audio with
xrandr --output HDMI-0 --set audio on
I get next line in dmesg.

2cond time do NOT work but
xrandr --output HDMI-0 --set audio auto
do?!

Is this right?
[    4.722072] snd_hda_intel 0000:01:00.1: Handle VGA-switcheroo audio client

There is no other 'enable audio' in dmesg.