LinuxQuestions.org - SPDIF output not working, how to enable this fix?

I have Debian Squeeze installed on a Lenovo Thinkpad T400. It is on a advanced mini dock which has SPDIF output. I have confirmed SPDIF output works in Windows.

I cannot get it to output in debian and it maybe due to an alsa bug. The fix is listed below but how do I apply it?

Here is the relevant output:

cat /proc/asound/card0/codec#0:

Code:

Codec: Conexant CX20561 (Hermosa)

Address: 0

Function Id: 0x1

Vendor Id: 0x14f15051

Subsystem Id: 0x17aa211c

Revision Id: 0x100000

No Modem Function Group found

Default PCM:

    rates [0x160]: 44100 48000 96000

    bits [0xe]: 16 20 24

    formats [0x1]: PCM

Default Amp-In caps: N/A

Default Amp-Out caps: N/A

GPIO: io=4, o=0, i=0, unsolicited=1, wake=0

  IO[0]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0

  IO[1]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0

  IO[2]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0

  IO[3]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0

Node 0x10 [Audio Output] wcaps 0xc1d: Stereo Amp-Out R/L

  Amp-Out caps: ofs=0x4a, nsteps=0x4a, stepsize=0x03, mute=0

  Amp-Out vals:  [0x21 0x21]

  Converter: stream=0, channel=0

  PCM:

    rates [0x560]: 44100 48000 96000 192000

    bits [0xe]: 16 20 24

    formats [0x1]: PCM

  Power: setting=D0, actual=D0

Node 0x11 [Audio Output] wcaps 0xc1d: Stereo Amp-Out R/L

  Amp-Out caps: ofs=0x4a, nsteps=0x4a, stepsize=0x03, mute=0

  Amp-Out vals:  [0x4a 0x4a]

  Converter: stream=0, channel=0

  PCM:

    rates [0x560]: 44100 48000 96000 192000

    bits [0xe]: 16 20 24

    formats [0x1]: PCM

  Power: setting=D0, actual=D0

Node 0x12 [Audio Output] wcaps 0x211: Stereo Digital

  Converter: stream=0, channel=0

  Digital:

  Digital category: 0x0

  PCM:

    rates [0x160]: 44100 48000 96000

    bits [0xe]: 16 20 24

    formats [0x5]: PCM AC3

Node 0x13 [Beep Generator Widget] wcaps 0x70000c: Mono Amp-Out

  Amp-Out caps: ofs=0x03, nsteps=0x03, stepsize=0x17, mute=0

  Amp-Out vals:  [0x00]

Node 0x14 [Audio Input] wcaps 0x100d1b: Stereo Amp-In R/L

  Amp-In caps: ofs=0x4a, nsteps=0x50, stepsize=0x03, mute=0

  Amp-In vals:  [0x00 0x00] [0x00 0x00]

  Converter: stream=0, channel=0

  SDI-Select: 0

  PCM:

    rates [0x160]: 44100 48000 96000

    bits [0xe]: 16 20 24

    formats [0x1]: PCM

  Power: setting=D0, actual=D0

  Connection: 2

    0x1d* 0x17

Node 0x15 [Audio Input] wcaps 0x100d1b: Stereo Amp-In R/L

  Amp-In caps: ofs=0x4a, nsteps=0x50, stepsize=0x03, mute=0

  Amp-In vals:  [0x00 0x00]

  Converter: stream=0, channel=0

  SDI-Select: 0

  PCM:

    rates [0x160]: 44100 48000 96000

    bits [0xe]: 16 20 24

    formats [0x1]: PCM

  Power: setting=D0, actual=D0

  Connection: 1

    0x18

Node 0x16 [Pin Complex] wcaps 0x400581: Stereo

  Pincap 0x0000001c: OUT HP Detect

  Pin Default 0x022140f0: [Jack] HP Out at Ext Front

    Conn = 1/8, Color = Green

    DefAssociation = 0xf, Sequence = 0x0

  Pin-ctls: 0xc0: OUT HP

  Unsolicited: tag=37, enabled=1

  Power: setting=D0, actual=D0

  Connection: 2

    0x10* 0x11

Node 0x17 [Pin Complex] wcaps 0x40048b: Stereo Amp-In

  Amp-In caps: ofs=0x00, nsteps=0x04, stepsize=0x27, mute=0

  Amp-In vals:  [0x03 0x03]

  Pincap 0x00001224: IN Detect

    Vref caps: 50 80

  Pin Default 0x61a190f0: [N/A] Mic at Sep Rear

    Conn = 1/8, Color = Pink

    DefAssociation = 0xf, Sequence = 0x0

  Pin-ctls: 0x24: IN VREF_80

  Unsolicited: tag=38, enabled=1

  Power: setting=D0, actual=D0

Node 0x18 [Pin Complex] wcaps 0x40048b: Stereo Amp-In

  Amp-In caps: ofs=0x00, nsteps=0x04, stepsize=0x27, mute=0

  Amp-In vals:  [0x03 0x03]

  Pincap 0x00001224: IN Detect

    Vref caps: 50 80

  Pin Default 0x02a190f0: [Jack] Mic at Ext Front

    Conn = 1/8, Color = Pink

    DefAssociation = 0xf, Sequence = 0x0

  Pin-ctls: 0x24: IN VREF_80

  Unsolicited: tag=39, enabled=1

  Power: setting=D0, actual=D0

Node 0x19 [Pin Complex] wcaps 0x400581: Stereo

  Pincap 0x00000014: OUT Detect

  Pin Default 0x40f000f0: [N/A] Other at Ext N/A

    Conn = Unknown, Color = Unknown

    DefAssociation = 0xf, Sequence = 0x0

  Pin-ctls: 0x40: OUT

  Unsolicited: tag=37, enabled=1

  Power: setting=D0, actual=D0

  Connection: 2

    0x10* 0x11

Node 0x1a [Pin Complex] wcaps 0x400501: Stereo

  Pincap 0x00010010: OUT EAPD

  EAPD 0x2: EAPD

  Pin Default 0x901701f0: [Fixed] Speaker at Int N/A

    Conn = Analog, Color = Unknown

    DefAssociation = 0xf, Sequence = 0x0

    Misc = NO_PRESENCE

  Pin-ctls: 0x00:

  Power: setting=D0, actual=D0

  Connection: 2

    0x10* 0x11

Node 0x1b [Pin Complex] wcaps 0x400500: Mono

  Pincap 0x00010010: OUT EAPD

  EAPD 0x2: EAPD

  Pin Default 0x40f001f0: [N/A] Other at Ext N/A

    Conn = Unknown, Color = Unknown

    DefAssociation = 0xf, Sequence = 0x0

    Misc = NO_PRESENCE

  Pin-ctls: 0x40: OUT

  Power: setting=D0, actual=D0

  Connection: 2

    0x10* 0x11

Node 0x1c [Pin Complex] wcaps 0x400701: Stereo Digital

  Pincap 0x00000010: OUT

  Pin Default 0x40f001f0: [N/A] Other at Ext N/A

    Conn = Unknown, Color = Unknown

    DefAssociation = 0xf, Sequence = 0x0

    Misc = NO_PRESENCE

  Pin-ctls: 0x00:

  Power: setting=D0, actual=D0

  Connection: 1

    0x12

Node 0x1d [Pin Complex] wcaps 0x40040b: Stereo Amp-In

  Amp-In caps: ofs=0x00, nsteps=0x04, stepsize=0x2f, mute=0

  Amp-In vals:  [0x03 0x03]

  Pincap 0x00000020: IN

  Pin Default 0x90a601f0: [Fixed] Mic at Int N/A

    Conn = Digital, Color = Unknown

    DefAssociation = 0xf, Sequence = 0x0

    Misc = NO_PRESENCE

  Pin-ctls: 0x20: IN

  Power: setting=D0, actual=D0

Node 0x1e [Vendor Defined Widget] wcaps 0xf00000: Mono

aplay -L

Code:

null

    Discard all samples (playback) or generate zero samples (capture)

default:CARD=Intel

    HDA Intel, CONEXANT Analog

    Default Audio Device

front:CARD=Intel,DEV=0

    HDA Intel, CONEXANT Analog

    Front speakers

surround40:CARD=Intel,DEV=0

    HDA Intel, CONEXANT Analog

    4.0 Surround output to Front and Rear speakers

surround41:CARD=Intel,DEV=0

    HDA Intel, CONEXANT Analog

    4.1 Surround output to Front, Rear and Subwoofer speakers

surround50:CARD=Intel,DEV=0

    HDA Intel, CONEXANT Analog

    5.0 Surround output to Front, Center and Rear speakers

surround51:CARD=Intel,DEV=0

    HDA Intel, CONEXANT Analog

    5.1 Surround output to Front, Center, Rear and Subwoofer speakers

surround71:CARD=Intel,DEV=0

    HDA Intel, CONEXANT Analog

    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers

iec958:CARD=Intel,DEV=0

    HDA Intel, Conexant Digital

    IEC958 (S/PDIF) Digital Audio Output

aplay -l

Code:

card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]

  Subdevices: 1/1

  Subdevice #0: subdevice #0

card 0: Intel [HDA Intel], device 1: Conexant Digital [Conexant Digital]

  Subdevices: 1/1

  Subdevice #0: subdevice #0

amixer:

Code:

Simple mixer control 'Master',0

  Capabilities: pvolume pswitch pswitch-joined penum

  Playback channels: Front Left - Front Right

  Limits: Playback 0 - 74

  Mono:

  Front Left: Playback 33 [45%] [-41.00dB] [on]

  Front Right: Playback 33 [45%] [-41.00dB] [on]

Simple mixer control 'PCM',0

  Capabilities: pvolume penum

  Playback channels: Front Left - Front Right

  Limits: Playback 0 - 255

  Mono:

  Front Left: Playback 255 [100%] [0.00dB]

  Front Right: Playback 255 [100%] [0.00dB]

Simple mixer control 'IEC958',0

  Capabilities: pswitch pswitch-joined penum

  Playback channels: Mono

  Mono: Playback [on]

Simple mixer control 'IEC958 Default PCM',0

  Capabilities: pswitch pswitch-joined penum

  Playback channels: Mono

  Mono: Playback [on]

Simple mixer control 'Digital',0

  Capabilities: cvolume penum

  Capture channels: Front Left - Front Right

  Limits: Capture 0 - 120

  Front Left: Capture 0 [0%] [-30.00dB]

  Front Right: Capture 0 [0%] [-30.00dB]

Simple mixer control 'Docking Mic',0

  Capabilities: volume pswitch penum

  Playback channels: Front Left - Front Right

  Capture channels: Front Left - Front Right

  Limits: 0 - 80

  Front Left: 0 [0%] [-74.00dB] Playback [off]

  Front Right: 0 [0%] [-74.00dB] Playback [off]

Simple mixer control 'External Mic',0

  Capabilities: volume pswitch penum

  Playback channels: Front Left - Front Right

  Capture channels: Front Left - Front Right

  Limits: 0 - 80

  Front Left: 0 [0%] [-74.00dB] Playback [off]

  Front Right: 0 [0%] [-74.00dB] Playback [off]

Simple mixer control 'Internal Mic',0

  Capabilities: volume pswitch penum

  Playback channels: Front Left - Front Right

  Capture channels: Front Left - Front Right

  Limits: 0 - 80

  Front Left: 0 [0%] [-74.00dB] Playback [off]

  Front Right: 0 [0%] [-74.00dB] Playback [off]

I've unmuted S/PDIF and S/PDIF Default PCM in alsamixer.

I have also tried putting the following asound.conf:

Code:

pcm.!default {

type plug

slave {

pcm "iec958:CARD=Intel"

rate 48000

format S16_LE

}

}

Also tried adding similar options to modprobe.conf but it didn't work.

This guy found a bug in alsa where the SPDIF pin out is wrong:
http://git.alsa-project.org/?p=alsa-...ec1cd1553a49e1

He said to do the following:

Quote:

Can you check if the SPDIF pin is actually enabled (look at
/proc/asound/cardxx/codec#xx) as OUT. I had a similar problem a long
time ago on a Lenovo W500, enabling the pin with a one-line verb for the
connexant 5051 solved the problem.

The SPDIF is already configured as OUT according to the output above. How do I enable the pin with a one-line verb?