ALSA SPDIF output with Intel mobo?

[timtt]

Hi all,

I have an Intel D945PVS motherboard that contains a SigmaTel STAC9220D/9223D chip. The jacks on the back are 5 regular ones plus an SPDIF connector which I would like to use. Unfortunately, I can't get Linux to recognize it. When using any of the mixer apps, I only have the following devices available: PCM, Front, Input So, Capture and Mux. Regular analog audio works fine via the hw:0,0 device, but I can't access any other device - they're not recognized. Can anyone point me in the right direction? I've run alsaconf numerous times to try to set things up and played around with my .asoundrc file as well, though I've come to realize that any configuration in there won't do anything unless I can get access to the hardware device.

I'm running FC4 with a 2.6.14-1.1644 kernel & alsa 1.0.10 (latest via yum).

Thanks,

Tim

[polt]

Hi Tim, Are you still working on this? I just installed Ubuntu Linux AMD64 on a system just like yours with exactly the same result on optical audio output. I've been posting at http://ubuntuforums.org/forumdisplay.php?f=114 without success for about a week.

Here's something you can try:

aplay -D hw:0,1 <the name of a wav file here>

When I put hw:0,0 in it works fine with the analog stereo output. When I put hw:0,1 nothing happens even though it delays like the sound is being played.

I see no light at all coming out of my cable.

There is no sound coming out of any connector except the green one. I think that means that SPDIF (IEC958) = Dolby does not work either. What do you think?

I have a coupld more ideas to work on if you want to. If you solved the problem, please send me a line.

[mase_linux]

I'm having this same problem.. anyone find a solution?

[timtt]

Hey guys,

I just noticed that you posted to this message with the same problem. I haven't solved it unfortunately and I'm pretty close to buying a $29.99 card that's definitely supported by ALSA. However, the engineer in me is telling me to fix it and not buy the new card. :-)

So here is a question I have for you two: do you have a windows partition to boot to? I know there are a whole bunch of audio utilities made by Intel for these motherboards and I can't get it out of my head that there's something to set in the bios/hardware with those. The actual audio BIOS settings accessable upon boot are pretty generic. Could either of you try this?

Thanks,

Tim