Comment # 5 on bug 980923 from Takashi Iwai

(In reply to Maik Wagner from comment #4)
> (In reply to Takashi Iwai from comment #1)
> > The stuttering with AMD chip may come due to the cache coherency issue.  Try
> > to pass snoop=off option to snd-hda-intel module, e.g. set the line below in
> > /etc/modprobe.d/50-hda.conf:
> >   options snd-hda-intel snoop=off
> > 
> > and reboot the system and retest.
> > 
> I tried this but this resulted in having no audio at all. pavucontroll
> defaults to Dummy-output and doesn't show any audio hardware at all.

That's odd.  Could you give dmesg output?  Also try snoop=0 instead of off,
just to be sure.