help understanding sound/snd_hda on mac pro w/ -STABLE.
hartzell at alerce.com
Tue Sep 9 04:05:18 UTC 2008
swell.k at gmail.com writes:
> George Hartzell <hartzell at alerce.com> writes:
> > An even simpler question would be, how can I test the other pcm
> > devices?
> If you look closely at /dev/sndstat output you'll notice there is
> `default' keyword on one of the pcm's. To change it you have to
> set hw.snd.default_unit accordingly. It's documented in sound(4).
> Next time you'll run mpg123 it will use different /dev/dsp.
bingo, at least a little bit with Alexander's 20080905 patch.
With hint.hdac.0.config="gpio1" in /boot/device.hints and
hw.snd.default_unit="2" I can use mpg123 to play sound out of the
line-out jack in the back of the unit.
I've tried combinations of gpio0, gpio1, gpio2 and default_unit's of
0,1,2,3 and can't get sound out of the headphone jack on the front of
Thanks for the patch and the help understanding what's going on!
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