[alsa-devel] [Alsa-devel] [i8x0] docking station audio-out ceased to work

Takashi Iwai tiwai at suse.de
Mon Apr 2 13:27:54 CEST 2007

At Mon, 02 Apr 2007 13:20:58 +0200,
Andreas Happe wrote:
> On Mon, 2007-04-02 at 11:17 +0200, Takashi Iwai wrote:
> > Well, my question is what test you did actually.
> Oh. Until recently plugging my speakers (analog, not S/PDIF connector)
> into the audio out of my Dell Docking station worked, now after
> connecting the speakers to the audio out it seems like the sound is
> muted. I'm using a default Ubuntu 7.04 config (without any .asoundrc),
> audio apps would be rhythmbox (gstreamer), mplayer, totem (xine). Kernel
> in question is latest -rc (2.6.21-rc4/5).
> > Hm, do you mean that output from SPDIF pcm works for the output on
> > docking station?
> yes, it works for the non-spdif audio outlet. I do not have any
> S/PDIF-enabled speaker system around, so I can't test that.

Still wondering why setting AC97-SPSA to 0 doesn't work in this
case.  Try the following:

- plug to the analog output on docking station
- set "IEC958 Playback AC97-SPSA" to zero via alsamixer or whatever
- set "IEC958 Playback Switch" on
- run
	% aplay -Ddefault foo.wav


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