[alsa-devel] ALC892 support for multiple spdif outputs

[Takashi Iwai]

At Mon, 16 Aug 2010 09:52:31 +0200,
Sander Knopper wrote:
> 
> [1  <text/plain; iso-8859-1 (7bit)>]
> On Monday 16 August 2010 08:42:07 you wrote:
> > At Sun, 15 Aug 2010 14:57:51 +0200,
> > 
> > Sander Knopper wrote:
> > > Dear developers,
> > > 
> > > I've opened a bug about this problem which can be viewed here:
> > > https://bugtrack.alsa-project.org/alsa-bug/view.php?id=5101
> > > 
> > > Raymond mentions in his last comment that I should ask you to, if I
> > > understand correctly, do the same trick as in the commit he refers to
> > > also for the ALC892 chip. Which obviously is the one I have...
> > > 
> > > You can find all the relevant information in the bug entry.
> > 
> > Could you post the exact problem and attach alsa-info.sh output to ML?
> > It'll help much for communication on ML.
> > 
> > 
> > Takashi
> 
> Ok, I can do that...
> 
> The problem is that I have an Asus P7H55 M Pro motherboard which uses the 
> ALC892 codec. I'm using this system as a HTPC and thus I'm trying to get sound 
> from the HTPC to my receiver. The motherboard only has an optical output which 
> shouldn't be an problem, be it that my receiver only has a coaxial input.
> 
> So I bought an spdif bracket made by Asus which has both a coaxial and optical 
> output and connected it to the internal spdif pins on the motherboard. So far 
> so good, but the real problem is that I can't get the bracket to work. When I 
> unmute all the spdif related entries with alsamixer only the optical output on 
> the motherboard itself "gives light" and the one on the bracket doesn't.
> 
> I've searched the internet a bit and I tried switching the audio output in the 
> bios from HDMI to SPDIF and vice versa, but that doesn't make any difference.
> 
> alsa-info is attached.

OK.  Did you test the latest alsa-driver-snapshot?

  ftp://ftp.kernel.org/pub/linux/kernel/people/tiwai/snapshot/alsa-driver-snapshot.tar.gz

The multi-SPDIF support is generic for all Realtek codecs.


Takashi