[alsa-devel] Strange control interactions on Tegra Harmony

[Mark Brown]

On Thu, Jan 27, 2011 at 02:55:07PM -0800, Stephen Warren wrote:
> Stephen Warren wrote at Thursday, January 27, 2011 3:00 PM:

> > The issue with both the headphone and speaker mute controls muting both
> > outputs is something else though.

> Hmm. This issue happens when I run:

> aplay foo.wav

> But not when I run:

> aplay -D hw:0,0 foo.wav

> I deleted /etc/asound.conf (which set the default sink to pulse), and the
> problem went away. I guess I won't bother investigating this anymore right
> now.

This sounds like the driver's happy and something in userspace is trying
to be too clever about things.