At Sun, 25 Jan 2004 15:25:49 +0100,
Daniel wrote:
>
> Greetings,
>
> I have recently bought a Shuttle SN41G2 with an onboard i810 chipset.
> I'm running a SuSE 9.0, and replaced the default OSS driver with ALSA
> 1.0.1.
>
> I redirected all my sound output through the SPDIF interface using
> /etc/asound.conf :
>
> pcm.nforce-hw {
> type hw
> card 0
> }
>
>
> pcm.!default {
> type plug
> slave.pcm "nforce
> }
>
> pcm.nforce {
> type dmix
> ipc_key 1234
> slave {
> pcm "hw:0,2"
> period_time 0
> period_size 1024
> buffer_size 4096
> rate 44100
> }
> }
>
> ctl.nforce-hw {
> type hw
> card 0
> }
>
> Yet the SPDIF output remains locked at 48 KHz, and so the sound is
> usually slightly altered :
>
> abyss:/etc # more /proc/asound/nForce2/codec97#0/ac97#0-0
> 0-0/0: Realtek ALC650 rev 2
>
> Capabilities :
> DAC resolution : 20-bit
> ADC resolution : 18-bit
> 3D enhancement : Realtek 3D Stereo Enhancement
>
> Current setup
> Mic gain : +0dB [+0dB]
> POP path : pre 3D
> Sim. stereo : off
> 3D enhancement : off
> Loudness : off
> Mono output : MIX
> Mic select : Mic1
> ADC/DAC loopback : off
> Extended ID : codec=0 rev=1 LDAC SDAC CDAC DSA=0 SPDIF DRA VRA
> Extended status : SPCV LDAC SDAC CDAC SPDIF=7/8 SPDIF VRA
> PCM front DAC : 48000Hz
> PCM Surr DAC : 48000Hz
> PCM LFE DAC : 48000Hz
> PCM ADC : 44100Hz
> SPDIF Control : Consumer PCM Category=0x2 Generation=1 Rate=48kHz
> SPDIF In Status : Not Locked
>
> How can I control the SPDIF output through alsa?
so far, nforce spdif supports only 48k.
it seems like a hardware limitation. use simply 48k in the above
configuration.
Takashi
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