[Alsa-user] Unable to get SPDIF Optical Audio working

[Robert S. <ro...@co...>]

I've been trynig to get SPDIF sound working for many days now.
Whenever I play anything, no audio comes out of the spdif at all.
I am 100% certain it is not the receiver, or cables.

I've got 2.6.10 kernel (gentoo), but alsa is not compilied into it.
Instead I have alsa-lib 1.0.7 modules installed.

At the bottom of this message is the output from 'aadebug'

alsamixer clearly has an 'IEC958' section, which is turned on.
I made the necessary changes to /etc/modules.d/alsa to enable digital.
I've tried so many things, if I am unable to get optical audio out working,
then I will need to install windows.

iecset shows:
Mode: consumer
Data: non-audio
Rate: 48000 Hz
Copyright: protected
Emphasis: none
Category: PCM coder
Original: original
Clock: 1000 ppm

I've tried doing 'iecset audio on' too, which changes Data to 'audio' 
but still nothing is outputted.

I've tried numerous apps to output to SPDIF.
Including:
aplay -D digital english.au
mplayer -ao alsa:device=hw#0.2 -ac hwac3, -srate 4800 soundfile.mp3
(And lots of variations of the alsa: command)
Even tried ogle with it configured in it's .oglerc to use iec958, but no 
luck

Could anyone here help me?




ALSA Audio Debug v0.0.8 - Tue Feb 22 16:24:35 EST 2005
http://alsa.opensrc.org/?aadebug

Kernel ----------------------------------------------------
Linux greystroke 2.6.10-gentoo-r6 #5 Sun Jan 30 07:56:05 EST 2005 i686 
Unknown CPU Typ AuthenticAMD GNU/Linux

Loaded Modules --------------------------------------------
snd_pcm_oss            48800  0
snd_mixer_oss          17792  1 snd_pcm_oss
snd_seq_oss            34432  0
snd_seq_midi_event      6272  1 snd_seq_oss
snd_seq                50576  4 snd_seq_oss,snd_seq_midi_event
snd_intel8x0           28448  0
snd_via82xx            22144  0
snd_ac97_codec         73456  2 snd_intel8x0,snd_via82xx
snd_pcm                81672  4 
snd_pcm_oss,snd_intel8x0,snd_via82xx,snd_ac97_codec
snd_timer              21764  2 snd_seq,snd_pcm
snd_page_alloc          7812  3 snd_intel8x0,snd_via82xx,snd_pcm
snd_mpu401_uart         6656  1 snd_via82xx
snd_rawmidi            20384  1 snd_mpu401_uart
snd_seq_device          7436  3 snd_seq_oss,snd_seq,snd_rawmidi
snd                    45284  12 
snd_pcm_oss,snd_mixer_oss,snd_seq_oss,snd_seq,snd_intel8x0,snd_via82xx,snd_ac97_codec,snd_pcm,snd_timer,snd_mpu401_uart,snd_rawmidi,snd_seq_device

Proc Config -----------------------------------------------

Modprobe Conf ---------------------------------------------
alias char-major-14-* soundcore
alias /dev/mixer snd-mixer-oss
alias /dev/dsp snd-pcm-oss
alias /dev/midi snd-seq-oss
alias snd-card-0 snd-via82xx
alias sound-slot-0 snd-via82xx
alias char-major-116-* snd
alias snd-card-1 snd-intel8x0
alias sound-slot-1 snd-intel8x0
alias sound-service-0-0 snd-mixer-oss
alias sound-service-0-1 snd-seq-oss
alias sound-service-0-3 snd-pcm-oss
alias sound-service-0-8 snd-seq-oss
alias sound-service-0-12 snd-pcm-oss
options snd-pcm-oss dsp_map=2 adsp_map=2
options snd cards_limit=2

Proc Asound -----------------------------------------------
Advanced Linux Sound Architecture Driver Version 1.0.8rc1.
Compiled on Jan 30 2005 for kernel 2.6.10-gentoo-r6.
0 [nForce2        ]: NFORCE - NVidia nForce2
                     NVidia nForce2 with ALC650F at 0xcc080000, irq 5
  0: [0- 0]: ctl
 18: [0- 2]: digital audio playback
 25: [0- 1]: digital audio capture
 16: [0- 0]: digital audio playback
 24: [0- 0]: digital audio capture
  1:       : sequencer
 33:       : timer
cat: /proc/asound/hwdep: No such file or directory
00-00: Intel ICH : NVidia nForce2 : playback 1 : capture 1
00-01: Intel ICH - MIC ADC : NVidia nForce2 - MIC ADC : capture 1
00-02: Intel ICH - IEC958 : NVidia nForce2 - IEC958 : playback 1

Dev Snd ---------------------------------------------------
controlC0  controlC1  pcmC0D0c  pcmC0D0p  pcmC0D1c  pcmC0D2p  seq  timer

CPU -------------------------------------------------------
model name      : Unknown CPU Typ
cpu MHz         : 2080.018

RAM -------------------------------------------------------
MemTotal:       905376 kB
SwapTotal:     2008116 kB

Hardware --------------------------------------------------
0000:00:00.0 Host bridge: nVidia Corporation nForce2 AGP (different 
version?) (rev a2)
0000:00:05.0 Multimedia audio controller: nVidia Corporation nForce 
MultiMedia audio [Via VT82C686B] (rev a2)
0000:00:06.0 Multimedia audio controller: nVidia Corporation nForce2 
AC97 Audio Controler (MCP) (rev a1)