[Pkg-alsa-devel] Bug#796406: alsa-base: SPDIF output not working on ALC892/Intel HDA card

Gergely Tomka tomkatudor at gmail.com
Fri Aug 21 19:04:36 UTC 2015

Package: alsa-base
Version: 1.0.25+3
Severity: important
File: alsa-base

Dear Maintainer,

   * What led up to the situation?

First, i dont know if this ever worked, none of the older kernels still present on the system seems to be working.

The SPDIF output is not working on a ZOTAC HP67 motherboard. All other outputs are working, including HDMI.

melak:~# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC892 Analog [ALC892 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 1: ALC892 Digital [ALC892 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

# time aplay -D plughw:0,1 audiocheck.net_hdsweep_1Hz_44000Hz_-3dBFS_30s.wav
Playing WAVE 'audiocheck.net_hdsweep_1Hz_44000Hz_-3dBFS_30s.wav' : Signed 16 bit Little Endian, Rate 88200 Hz, Mono

real    0m30.003s
user    0m0.024s
sys     0m0.012s

Still no sound, not even light from the port.

   * What exactly did you do (or not do) that was effective (or

All the hardware parts (toslink cables, d/a converter, amplifier) was tested with another, working spdif output and was found working.
Tried to enable/disable various Azalia/digital outputs in the system BIOS.
Tried various snd_intel_hda parameters, including:

   * What was the outcome of this action?

Still no sound.

   * What outcome did you expect instead?

sound on the SPPDIF outout.

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: i386 (i686)

Kernel: Linux 4.1.0-1-686-pae (SMP w/4 CPU cores)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)

Versions of packages alsa-base depends on:
ii  dpkg    1.18.2
ii  kmod    21-1
ii  procps  2:3.3.10-2
ii  udev    224-1

Versions of packages alsa-base recommends:
ii  alsa-utils  1.0.29-1

Versions of packages alsa-base suggests:
ii  alsa-oss    1.0.28-1
ii  oss-compat  6

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