Full duplex on nForce 250Gb

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Hi,

I have an onboard sound card that I know for a fact is full duplex. Alsa
picks up the card fine, and everythign works except for full duplex
itself. All the info I was able to find is pre-dmix era, and looks very
dated. What steps do I have to take to enable full duplex? The relevant
information is included below, the kernel is vanilla 2.6.18.6, no patches.

Thanks in advance

Peter

==============================

lspci output:
00:06.0 Multimedia audio controller: nVidia Corporation nForce3 250Gb
AC'97 Audio Controller (rev a1)

==============================

root@Thesaurus:~# cat /proc/asound/cards
 0 [CK8S           ]: NFORCE - NVidia CK8S
                      NVidia CK8S with ALC850 at 0xfe02b000, irq 19
 1 [Live           ]: EMU10K1 - SB Live 5.1
                      SB Live 5.1 (rev.7, serial:0x80641102) at 0x8400,
irq 21
root@Thesaurus:~#

==============================

root@Thesaurus:~# cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.12rc1 (Thu Jun 22
13:55:50 2006 UTC).
root@Thesaurus:~#

==============================

root@Thesaurus:~# cat /proc/asound/pcm
00-02: Intel ICH - IEC958 : NVidia CK8S - IEC958 : playback 1
00-01: Intel ICH - MIC ADC : NVidia CK8S - MIC ADC : capture 1
00-00: Intel ICH : NVidia CK8S : playback 1 : capture 1
01-03: emu10k1 : Multichannel Playback : playback 1
01-02: emu10k1 efx : Multichannel Capture/PT Playback : playback 8 :
capture 1
01-01: emu10k1 mic : Mic Capture : capture 1
01-00: emu10k1 : ADC Capture/Standard PCM Playback : playback 32 : capture 1
root@Thesaurus:~#


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