[alsa-devel] Digital-Out (Toslink) on HDA-Intal (AD1986A)?

Takashi Iwai tiwai at suse.de
Thu Feb 7 17:21:55 CET 2008

Hi, sorry for the late reply.
At the next time, please add my address to Cc so that I don't miss
your post...

At Fri, 1 Feb 2008 22:02:51 +0100,
Martin Egge wrote:
> Hi,
> Am Dienstag, 29. Januar 2008 schrieb Takashi Iwai:
> > Could you try HG bisect?  It'd be greatly helpful.
> I've tried HG bisect this evening. It took me some time to discover that the 
> problem is not within alsa-driver or alsa-kernel but within alsa-lib. This is 
> the result of HG bisect:
> The first bad revision is:
> changeset:   2397:d1e9a2f92e7b
> user:        tiwai
> date:        Fri Jan 18 13:42:51 2008 +0100
> summary:     dmix - Enable auto format detection as default

Thanks for checkign this.  Now the thing gets a bit clearer.
The problem is explained like this: via "default" PCM, 32bit format is
chosen now because the analog audio-out widget supports.  But the
SPDIF out widget doesn't support that format.  Thus it's not played

If my guess is correct, you can propbably get SPDIF output via "spdif"
output.  What happens with the below?

	% aplay -Dplug:spdif foo.wav


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