What modules to use for VIA VT1708/A [Azalia HDAC]?

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Dear ALSA users,


could please enlighten me regarding the following problem.

According to `lspci` my ASUS M2V-MX SE mainboard uses a VIA VT1708/A
audio chipset.

        $ lspci -vvnn | grep -A10 Audio
        20:01.0 Audio device [0403]: VIA Technologies, Inc. VT1708/A [Azalia HDAC] (VIA High Definition Audio Controller) [1106:3288] (rev 10)
        	Subsystem: ASUSTeK Computer Inc. Device [1043:8290]
        	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        	Latency: 0, Cache Line Size: 64 bytes
        	Interrupt: pin A routed to IRQ 17
        	Region 0: Memory at fbffc000 (64-bit, non-prefetchable) [size=16K]
        	Capabilities: <access denied>
        	Kernel driver in use: HDA Intel

But it is reported for example by PulseAudio as a VIA VT82xx device.

Noticing that `snd_hda_codec_realtek` gets loaded adds even more to my
confusion.

        $ lsmod | grep snd
        snd_hda_codec_realtek   234615  1 
        snd_hda_intel          18147  4 
        snd_hda_codec          53876  2 snd_hda_codec_realtek,snd_hda_intel
        snd_hwdep               5220  1 snd_hda_codec
        snd_pcm_oss            32223  0 
        snd_mixer_oss          12478  1 snd_pcm_oss
        snd_pcm                60263  4 snd_hda_intel,snd_hda_codec,snd_pcm_oss
        snd_seq_midi            4064  0 
        snd_rawmidi            15083  1 snd_seq_midi
        snd_seq_midi_event      4628  1 snd_seq_midi
        snd_seq                41041  2 snd_seq_midi,snd_seq_midi_event
        snd_timer              15406  2 snd_pcm,snd_seq
        snd_seq_device          4477  3 snd_seq_midi,snd_rawmidi,snd_seq
        snd                    44158  18 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
        soundcore               4566  1 snd
        snd_page_alloc          6105  2 snd_hda_intel,snd_pcm

Even more since there is a `snd-hda-codec-via.ko` available.

        $ ls /lib/modules/2.6.32-trunk-amd64/kernel/sound/pci/hda/
        snd-hda-codec-analog.ko
        snd-hda-codec-atihdmi.ko
        snd-hda-codec-ca0110.ko
        snd-hda-codec-cirrus.ko
        snd-hda-codec-cmedia.ko
        snd-hda-codec-conexant.ko
        snd-hda-codec-idt.ko
        snd-hda-codec-intelhdmi.ko
        snd-hda-codec.ko
        snd-hda-codec-nvhdmi.ko
        snd-hda-codec-realtek.ko
        snd-hda-codec-si3054.ko
        snd-hda-codec-via.ko
        snd-hda-intel.ko

Is the correct module loaded? I wanted to get this question answered
first before I asked more questions regarding my problem with PulseAudio
[1].

I am using Debian Sid/unstable with the following Linux kernel

$ uname -a
        Linux hostname 2.6.32-trunk-amd64 #1 SMP Sun Jan 10 07:51:13 UTC 2010 x86_64 GNU/Linux
        
but a 32-bit userspace with `libasound2` 1.0.21a-1 installed.

        $ more /proc/asound/version 
        Advanced Linux Sound Architecture Driver Version 1.0.21.


Thanks,

Paul


[1] http://pulseaudio.org/ticket/758

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