[ALSA - driver 0001703]: NVidia CK804 - Realtek ALC850 rev 0 - passthrough not working

bugtrack
2006-01-05T19:00:52Z

Last Modified: 01-05-2006 20:00 CET
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Summary: NVidia CK804 - Realtek ALC850 rev 0 - passthrough
not working
Description:
Pass-through with xine is not working.
PCM Stereo downmix works fine

00:04.0 Multimedia audio controller: nVidia Corporation CK804 AC'97 Audio
Controller (rev a2)

gcc (GCC) 4.0.2
alsa version 1.0.11rc2
Linux 2.6.15

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alsarealist - 01-04-06 23:11
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/proc/asound/card0/codec97#0/ac97#0-0+regs |grep 0:3a
0:3a = 2822

The ALC 850 chip contain in bit 15 register 3ah a validity control flag
for SPDIF? Should this bit be set when playing DTS or Dolby 5.1 streams?

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tiwai - 01-05-06 20:00
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SPSA in 0x2a is set to 0, i.e. assigned to slots 3/4. This is basically
changed via "AC97-SPSA" mixer control. Change it to "3" (the highest)
manually.

Also, try to output the audio PCM signal over SPDIF with
% aplay -Dplug:spdif somefile.wav

Issue History
Date Modified Username Field Change
======================================================================
01-03-06 18:42 alsarealist New Issue
01-03-06 18:42 alsarealist Distribution => self burned
01-03-06 19:05 rlrevell Note Added: 0007403
01-04-06 01:45 alsarealist Note Added: 0007409
01-04-06 17:11 tiwai Note Added: 0007436
01-04-06 17:32 alsarealist File Added: asound.state
01-04-06 17:33 alsarealist Note Added: 0007443
01-04-06 17:38 alsarealist File Added: proc-asound
01-04-06 17:42 alsarealist Note Added: 0007447
01-04-06 23:11 alsarealist Note Added: 0007459
01-05-06 20:00 tiwai Note Added: 0007477