...

...

...

And here's "cat /proc/asound/card0/codec#0"

This is the regular codec. Are there /proc/asound/card0/codec#{1,2,3}?

There was only one.

...

The HDMI codec would look like this one: % cat /proc/asound/card0/codec#3

...

I saw nothing like that.

...

Does your main board have an external physical HDMI interface? If true, then there is an ALSA bug.

Yes, there's physical HDMI port on the card, which, according to the documentation, supports both video and audio. However, there's also "SPDIF OUT Mode Setting" in the BIOS allowing to choose between "HDMI Output" or "SPDIF Output", suggesting that only one can be used at a time. The description is not terribly clear though.

...

Will it help to enable SND_VERBOSE_PRINTK and SND_DEBUG?

Sure it could help, and be sure to use the latest sound-2.6 git tree :-)

Ok, I've done this. Here's "aplay -l"

**** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA Intel], device 0: ALC1200 Analog [ALC1200 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: Intel [HDA Intel], device 1: ALC1200 Digital [ALC1200 Digital] Subdevices: 1/1 Subdevice #0: subdevice #0

And here's "dmesg"

[ 8.513848] HDA Intel 0000:00:1b.0: PCI INT A -> GSI 22 (level, low) -> IRQ 22 [ 8.514001] HDA Intel 0000:00:1b.0: setting latency timer to 64 [ 8.514005] ALSA sound/pci/hda/hda_intel.c:2187: chipset global capabilities = 0x4401 [ 8.543345] ALSA sound/pci/hda/hda_intel.c:779: codec_mask = 0x3 [ 8.543487] ALSA sound/pci/hda/hda_intel.c:1206: hda_intel: codec #0 probed OK [ 8.545462] ALSA sound/pci/hda/hda_codec.c:2587: hda_codec: model '6stack-dig' is selected

[ 8.574845] ALSA sound/pci/hda/hda_codec.c:1276: Cannot find slave Headphone Playback Volume, skipped [ 8.574947] ALSA sound/pci/hda/hda_codec.c:1276: Cannot find slave Speaker Playback Volume, skipped [ 8.575043] ALSA sound/pci/hda/hda_codec.c:1276: Cannot find slave Mono Playback Volume, skipped [ 8.575135] ALSA sound/pci/hda/hda_codec.c:1276: Cannot find slave Line-Out Playback Volume, skipped [ 8.575231] ALSA sound/pci/hda/hda_codec.c:1276: Cannot find slave PCM Playback Volume, skipped [ 8.575337] ALSA sound/pci/hda/hda_codec.c:1276: Cannot find slave Speaker Playback Switch, skipped [ 8.575435] ALSA sound/pci/hda/hda_codec.c:1276: Cannot find slave Mono Playback Switch, skipped

[ 105.312682] ALSA sound/pci/hda/hda_codec.c:853: hda_codec_cleanup_stream: NID=0x6 [ 106.707933] ALSA sound/pci/hda/hda_intel.c:1464: azx_pcm_prepare: bufsize=0x10000, format=0x11 [ 106.707951] ALSA sound/pci/hda/hda_codec.c:841: hda_codec_setup_stream: NID=0x6, stream=0x5, channel=0, format=0x11 .......... [ 110.479724] ALSA sound/pci/hda/hda_intel.c:1464: azx_pcm_prepare: bufsize=0x10000, format=0x11 [ 110.479740] ALSA sound/pci/hda/hda_codec.c:841: hda_codec_setup_stream: NID=0x6, stream=0x5, channel=0, format=0x11 [ 200.715073] ALSA sound/pci/hda/hda_codec.c:853: hda_codec_cleanup_stream: NID=0x6