[alsa-devel] Cache issue on BayTrail (ValleyView2) HD-audio

[Takashi Iwai]

Hi Mengdong,

right now I'm playing onboard HD-audio on a Baytrail (ValleyView2)
machine, not DP/HDMI output, and I noticed that the snooping doesn't
seem working with this.  The playback sometimes stutters / gets
noises.  This is a typical behavior with caching mismatch and indeed
it works when I disable snooping via snoop=0 option.

Could you check whether this can be seen generically?  Also, can
anyone check whether snoop=0 for Baytrail HD-audio causes any issues?

In general, snoop=0 isn't too bad (IIRC, Windows does it as default),
so we can turn it off at least for Baytrail as default.


thanks,

Takashi