[bug] SPDIF (digital-out) not working on NForce4/CK804

[bug] SPDIF (digital-out) not working on NForce4/CK804

[Gilles Hemberg]

Hi all,

Sorry to bump in like this, but I was advised to submit a bug-report for 
the ALSA-drivers on my HTPC: no sound comes through out of my AVR when I 
select the digital output through SPDIF (TOSLINK).


The relevant parts of my HTPC are as follows:
     * CPU: Athlon64 X2 3800+
     * Motherboard: ASUS A8N-SLI Deluxe motherboard (BIOS 1805) NForce4 
with CK804 sound (relying on a Realtek ALC850 chip)
     * RAM: 2x 512 MB DDR-400
     * GPU: nVidia Geforce GT240 (which carries a HDMI port and uses the 
snd-
     * Receiver: Marantz SR7500 (supporting both Dolby Digital 5.1 and 
DTS decoding), connected to motherboard's SPDIF TOSLINK port (optical) + 
JBL 5.1 speaker-set
     * OpenElec 4.2.0: Kernel 3.16.3, Alsa 1.0.28


Symptoms:
Speaker-test does not produce any sound. Command used is as follows:

     speaker-test -c2 -r 48000 -D hw:0,2

No sound either from other applications (such as XBMC 13.2).

SPDIF worked flawlessly on the exact same hardware & connections using 
Win7/XBMC.
Sound does come through the SPDIF when I use hw:0,0 (= analog device).


Things tried (none working):
     * Blacklisting snd-hda-intel (= HDMI from my GPU) to make sure 
CK804 is the only sound chip visible.

     * amixer set 'IEC958 Playback AC97-SPSA' Playback 100% unmute

     * Contacted XBMC developer via IRC for investigation: concluded 
that problem would be with kernel driver, advised to create this bug-report.

     * Tried another distro (Ubuntu from XBMCBuntu 13.0).


Further details which might be useful:
     * alsa-info.sh output: http://pastebin.com/Bp2ZGfZb

     * /proc/asound/card0/ac97#0-0: http://pastebin.com/Q5y1J0Ra

     * /proc/asound/card0/ac97#0-0+regs: http://pastebin.com/tBbTCxZg


Similar reports found (no working solution):
http://mailman.alsa-project.org/pipermail/alsa-devel/2009-September/021336.html
http://askubuntu.com/questions/264272/no-sound-output-msi-k8n-neo4-ck804-ac97
http://askubuntu.com/questions/462605/new-install-of-ubuntu-14-04-trusty-3-audio-devices-no-sound
     https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=615225
     http://ehc.ac/p/alsa/mailman/message/25973743/
     http://wiki.linuxmce.org/index.php/ASUS_A8N-SLI_Deluxe
     http://forum.xbmc.org/showthread.php?tid=156043&pid=1348176
     http://forum.xbmc.org/showthread.php?tid=168608
     http://ubuntuforums.org/showthread.php?t=2210288
     http://cholla.mmto.org/computers/linux/sound/asus_a8ne.html
     http://www.nvnews.net/vbulletin/showthread.php?t=80521
     ...


I am willing to test or provide further details where needed. I am new 
to Linux, but am a developer myself (C#) so I know how to look up some 
info... Hoping I haven't offended any of you with this post.

THNX,
Bye!

[bug] SPDIF (digital-out) not working on NForce4/CK804

[Gilles Hemberg]

Hi all,

Sorry to bump in like this, but I was advised to submit a bug-report for
the ALSA-drivers on my HTPC: no sound comes through out of my AVR when I
select the digital output through SPDIF (TOSLINK).


The relevant parts of my HTPC are as follows:
    * CPU: Athlon64 X2 3800+
    * Motherboard: ASUS A8N-SLI Deluxe motherboard (BIOS 1805) NForce4 with
CK804 sound (relying on a Realtek ALC850 chip)
    * RAM: 2x 512 MB DDR-400
    * GPU: nVidia Geforce GT240 (which carries a HDMI port and uses the snd-
    * Receiver: Marantz SR7500 (supporting both Dolby Digital 5.1 and DTS
decoding), connected to motherboard's SPDIF TOSLINK port (optical) + JBL
5.1 speaker-set
    * OpenElec 4.2.0: Kernel 3.16.3, Alsa 1.0.28


Symptoms:
Speaker-test does not produce any sound. Command used is as follows:

    speaker-test -c2 -r 48000 -D hw:0,2

No sound either from other applications (such as XBMC 13.2).

SPDIF worked flawlessly on the exact same hardware & connections using
Win7/XBMC.
Sound does come through the SPDIF when I use hw:0,0 (= analog device).


Things tried (none working):
    * Blacklisting snd-hda-intel (= HDMI from my GPU) to make sure CK804 is
the only sound chip visible.

    * amixer set 'IEC958 Playback AC97-SPSA' Playback 100% unmute

    * Contacted XBMC developer via IRC for investigation: concluded that
problem would be with kernel driver, advised to create this bug-report.

    * Tried another distro (Ubuntu from XBMCBuntu 13.0).


Further details which might be useful:
    * alsa-info.sh output: http://sprunge.us/fMeR

    * /proc/asound/card0/ac97#0-0: http://pastebin.com/Q5y1J0Ra

    * /proc/asound/card0/ac97#0-0+re
gs: http://pastebin.com/tBbTCxZg


Similar reports found (no working solution):

<http://mailman.alsa-project.org/pipermail/alsa-devel/2009-September/021336.html>
http://mailman.alsa-project.org/pipermail/alsa-devel/2009-September/021336.html

http://askubuntu.com/questions/264272/no-sound-output-msi-k8n-neo4-ck804-ac97

http://askubuntu.com/questions/462605/new-install-of-ubuntu-14-04-trusty-3-audio-devices-no-sound
    https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=615225
    http://ehc.ac/p/alsa/mailman/message/25973743/
    http://wiki.linuxmce.org/index.php/ASUS_A8N-SLI_Deluxe
    http://forum.xbmc.org/showthread.php?tid=156043&pid=1348176
    http://forum.xbmc.org/showthread.php?tid=168608
    http://ubuntuforums.org/showthread.php?t=2210288
    http://cholla.mmto.org/computers/linux/sound/asus_a8ne.html
    http://www.nvnews.net/vbulletin/showthread.php?t=80521
    ...


I am willing to test or provide further details where needed. I am new to
Linux, but am a developer myself (C#) so I know how to look up some info...
Hoping I haven't offended any of you with this post.

THNX,
Bye!
_____
Gilles Hemberg
gilles.hemberg@gmail.com

[bug] SPDIF (digital-out) not working on NForce4/CK804

[Gilles Hemberg]

Hi all,

Sorry to bump in like this, but I was advised to submit a bug-report
for the ALSA-drivers on my HTPC: no sound comes through out of my AVR
when I select the digital output through SPDIF (TOSLINK).


The relevant parts of my HTPC are as follows:
    * CPU: Athlon64 X2 3800+
    * Motherboard: ASUS A8N-SLI Deluxe motherboard (BIOS 1805) NForce4
with CK804 sound (relying on a Realtek ALC850 chip)
    * RAM: 2x 512 MB DDR-400
    * GPU: nVidia Geforce GT240 (which carries a HDMI port and uses the snd-
    * Receiver: Marantz SR7500 (supporting both Dolby Digital 5.1 and
DTS decoding), connected to motherboard's SPDIF TOSLINK port (optical)
+ JBL 5.1 speaker-set
    * OpenElec 4.2.0: Kernel 3.16.3, Alsa 1.0.28


Symptoms:
Speaker-test does not produce any sound. Command used is as follows:

    speaker-test -c2 -r 48000 -D hw:0,2

No sound either from other applications (such as XBMC 13.2).

SPDIF worked flawlessly on the exact same hardware & connections using
Win7/XBMC.
Sound does come through the SPDIF when I use hw:0,0 (= analog device).


Things tried (none working):
    * Blacklisting snd-hda-intel (= HDMI from my GPU) to make sure
CK804 is the only sound chip visible.

    * amixer set 'IEC958 Playback AC97-SPSA' Playback 100% unmute

    * Contacted XBMC developer via IRC for investigation: concluded
that problem would be with kernel driver, advised to create this
bug-report.

    * Tried another distro (Ubuntu from XBMCBuntu 13.0).


Further details which might be useful:
    * alsa-info.sh output: http://sprunge.us/fMeR

    * /proc/asound/card0/ac97#0-0: http://pastebin.com/Q5y1J0Ra

    * /proc/asound/card0/ac97#0-0+re
gs: http://pastebin.com/tBbTCxZg


Similar reports found (no working solution):
    http://mailman.alsa-project.org/pipermail/alsa-devel/2009-September/021336.html
    http://askubuntu.com/questions/264272/no-sound-output-msi-k8n-neo4-ck804-ac97
    http://askubuntu.com/questions/462605/new-install-of-ubuntu-14-04-trusty-3-audio-devices-no-sound
    https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=615225
    http://ehc.ac/p/alsa/mailman/message/25973743/
    http://wiki.linuxmce.org/index.php/ASUS_A8N-SLI_Deluxe
    http://forum.xbmc.org/showthread.php?tid=156043&pid=1348176
    http://forum.xbmc.org/showthread.php?tid=168608
    http://ubuntuforums.org/showthread.php?t=2210288
    http://cholla.mmto.org/computers/linux/sound/asus_a8ne.html
    http://www.nvnews.net/vbulletin/showthread.php?t=80521
    ...


I am willing to test or provide further details where needed. I am new
to Linux, but am a developer myself (C#) so I know how to look up some
info... Hoping I haven't offended any of you with this post.

THNX,
Bye!
_____
Gilles Hemberg
gilles.hemberg@gmail.com

Re: [bug] SPDIF (digital-out) not working on NForce4/CK804

[Raymond Yau]

>
> Sorry to bump in like this, but I was advised to submit a bug-report for
the ALSA-drivers on my HTPC: no sound comes through out of my AVR when I
select the digital output through SPDIF (TOSLINK).
>
>
> The relevant parts of my HTPC are as follows:
>     * CPU: Athlon64 X2 3800+
>     * Motherboard: ASUS A8N-SLI Deluxe motherboard (BIOS 1805) NForce4
with CK804 sound (relying on a Realtek ALC850 chip)

>     * RAM: 2x 512 MB DDR-400
>     * GPU: nVidia Geforce GT240 (which carries a HDMI port and uses the
snd-
>     * Receiver: Marantz SR7500 (supporting both Dolby Digital 5.1 and DTS
decoding), connected to motherboard's SPDIF TOSLINK port (optical) + JBL
5.1 speaker-set
>     * OpenElec 4.2.0: Kernel 3.16.3, Alsa 1.0.28
>
>
> Symptoms:
> Speaker-test does not produce any sound. Command used is as follows:
>
>     speaker-test -c2 -r 48000 -D hw:0,2
>
> No sound either from other applications (such as XBMC 13.2).
>
> SPDIF worked flawlessly on the exact same hardware & connections using
Win7/XBMC.
> Sound does come through the SPDIF when I use hw:0,0 (= analog device).
>
>
> Things tried (none working):
>     * Blacklisting snd-hda-intel (= HDMI from my GPU) to make sure CK804
is the only sound chip visible.
>
>     * amixer set 'IEC958 Playback AC97-SPSA' Playback 100% unmute

http://www.realtek.com.tw/products/productsView.aspx?Langid=1&PFid=31&Level=5&Conn=4&ProdID=59

Take a look at alc850 datasheet

Simple mixer control 'IEC958 Playback AC97-SPSA',0
  Capabilities: volume volume-joined
  Playback channels: Mono
  Capture channels: Mono
  Limits: 0 - 3
  Mono: 0 [0%]

This is not volume control, it is SPDIF out Slot Assignment in ac97 link

You have to use iec958:CARD=CK804

http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/cards/NFORCE.conf;hb=HEAD

Simple mixer control 'IEC958 Playback Source',0
  Capabilities: enum
  Items: 'PCM' 'Analog In' 'IEC958 In
  Item0: 'PCM'

>
>     * Contacted XBMC developer via IRC for investigation: concluded that
problem would be with kernel driver, advised to create this bug-report.
>
>     * Tried another distro (Ubuntu from XBMCBuntu 13.0).
>
>
> Further details which might be useful:
>     * alsa-info.sh output:http://pastebin.com/Bp2ZGfZb
>
>     * /proc/asound/card0/ac97#0-0:http://pastebin.com/Q5y1J0Ra
>
>     * /proc/asound/card0/ac97#0-0+regs:http://pastebin.com/tBbTCxZg
>
>
> Similar reports found (no working solution):
>
http://mailman.alsa-project.org/pipermail/alsa-devel/2009-September/021336.html
>
http://askubuntu.com/questions/264272/no-sound-output-msi-k8n-neo4-ck804-ac97
>
http://askubuntu.com/questions/462605/new-install-of-ubuntu-14-04-trusty-3-audio-devices-no-sound
>    https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=615225
>    http://ehc.ac/p/alsa/mailman/message/25973743/
>    http://wiki.linuxmce.org/index.php/ASUS_A8N-SLI_Deluxe
>    http://forum.xbmc.org/showthread.php?tid=156043&pid=1348176
>    http://forum.xbmc.org/showthread.php?tid=168608
>    http://ubuntuforums.org/showthread.php?t=2210288
>    http://cholla.mmto.org/computers/linux/sound/asus_a8ne.html
>    http://www.nvnews.net/vbulletin/showthread.php?t=80521
>     ...
>

Re: [bug] SPDIF (digital-out) not working on NForce4/CK804

[Gilles Hemberg]

Hi,

Command tried:

     speaker-test -c2 -r 48000 -D iec958:CARD=CK804,DEV=0

Still no sound coming through AVR...

For the sake of completeness, I provide a new alsa-info.sh output: 
http://sprunge.us/ZWLF (I blacklisted the snd_hda_intel this time just 
to be on the safe side).

The git-link below ( 
http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/cards/NFORCE.conf;hb=HEAD 
) seems to point to the .conf for nForce2/3; min is a nForce4 (don't 
know if nForce4 is supposed to use this same .conf).

THNX already,
Bye!
_____
*Gilles Hemberg*
/gilles.hemberg@gmail.com/



On 03/10/2014 09:31, Raymond Yau wrote:>
>
> > Sorry to bump in like this, but I was advised to submit a bug-report 
> for the ALSA-drivers on my HTPC: no sound comes through out of my AVR 
> when I select the digital output through SPDIF (TOSLINK).
> >
> > The relevant parts of my HTPC are as follows:
> >     * CPU: Athlon64 X2 3800+
> >     * Motherboard: ASUS A8N-SLI Deluxe motherboard (BIOS 1805) 
> NForce4 with CK804 sound (relying on a Realtek ALC850 chip)
>
> >     * RAM: 2x 512 MB DDR-400
> >     * GPU: nVidia Geforce GT240 (which carries a HDMI port and uses 
> the snd-
> >     * Receiver: Marantz SR7500 (supporting both Dolby Digital 5.1 
> and DTS decoding), connected to motherboard's SPDIF TOSLINK port 
> (optical) + JBL 5.1 speaker-set
> >     * OpenElec 4.2.0: Kernel 3.16.3, Alsa 1.0.28
> >
> >
> > Symptoms:
> > Speaker-test does not produce any sound. Command used is as follows:
> >
> >     speaker-test -c2 -r 48000 -D hw:0,2
> >
> > No sound either from other applications (such as XBMC 13.2).
> >
> > SPDIF worked flawlessly on the exact same hardware & connections 
> using Win7/XBMC.
> > Sound does come through the SPDIF when I use hw:0,0 (= analog device).
> >
> >
> > Things tried (none working):
> >     * Blacklisting snd-hda-intel (= HDMI from my GPU) to make sure 
> CK804 is the only sound chip visible.
> >
> >     * amixer set 'IEC958 Playback AC97-SPSA' Playback 100% unmute
>

> http://www.realtek.com.tw/products/productsView.aspx?Langid=1&PFid=31&Level=5&Conn=4&ProdID=59
>
> Take a look at alc850 datasheet
>
> Simple mixer control 'IEC958 Playback AC97-SPSA',0
>   Capabilities: volume volume-joined
>   Playback channels: Mono
>   Capture channels: Mono
>   Limits: 0 - 3
>   Mono: 0 [0%]
>
> This is not volume control, it is SPDIF out Slot Assignment in ac97 link
>
> You have to use iec958:CARD=CK804
>
> http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/cards/NFORCE.conf;hb=HEAD
>
> Simple mixer control 'IEC958 Playback Source',0
>   Capabilities: enum
>   Items: 'PCM' 'Analog In' 'IEC958 In
>   Item0: 'PCM'
>
>

Re: [bug] SPDIF (digital-out) not working on NForce4/CK804

[Raymond Yau]

>
> Command tried:
>
>     speaker-test -c2 -r 48000 -D iec958:CARD=CK804,DEV=0
>
> Still no sound coming through AVR...
>
> For the sake of completeness, I provide a new alsa-info.sh output:
http://sprunge.us/ZWLF(I blacklisted the snd_hda_intel this time just to be
on the safe side).
>
> The git-link below (
http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/cards/NFORCE.conf;hb=HEAD)
seems to point to the .conf for nForce2/3; min is a nForce4 (don't know if
nForce4 is supposed to use this same .conf).
>

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/intel8x0.c?id=a9e996604f77be6f1f4deb0eb1cc2652000054f1

Either use spdif over ac-link or you have to find out how to use nforce4
secondary spdif output

http://www.nvidia.com/page/pg_20041014863476.html

AUDIO

AC ’97 2.3 compliant interface

Supports 2, 4, 6, or 8-channel audio
Dual AC-Link: supports up to two codecs
Dual S/PDIF: supports two simultaneous digital outputs; handles stereo PCM
or AC-3 output
16-bit or 20-bit stereo, 48kHz output and 16-bit input streams across
AC-Link
24-bit, 96kHz stereo output on the secondary S/PDIF output

>>
>> > Sorry to bump in like this, but I was advised to submit a bug-report
for the ALSA-drivers on my HTPC: no sound comes through out of my AVR when
I select the digital output through SPDIF (TOSLINK).
>> >
>> > The relevant parts of my HTPC are as follows:
>> >     * CPU: Athlon64 X2 3800+
>> >     * Motherboard: ASUS A8N-SLI Deluxe motherboard (BIOS 1805) NForce4
with CK804 sound (relying on a Realtek ALC850 chip)
>>
>> >     * RAM: 2x 512 MB DDR-400
>> >     * GPU: nVidia Geforce GT240 (which carries a HDMI port and uses
the snd-
>> >     * Receiver: Marantz SR7500 (supporting both Dolby Digital 5.1 and
DTS decoding), connected to motherboard's SPDIF TOSLINK port (optical) +
JBL 5.1 speaker-set
>> >     * OpenElec 4.2.0: Kernel 3.16.3, Alsa 1.0.28
>> >
>> >
>> > Symptoms:
>> > Speaker-test does not produce any sound. Command used is as follows:
>> >
>> >     speaker-test -c2 -r 48000 -D hw:0,2
>> >
>> > No sound either from other applications (such as XBMC 13.2).
>> >
>> > SPDIF worked flawlessly on the exact same hardware & connections using
Win7/XBMC.
>> > Sound does come through the SPDIF when I use hw:0,0 (= analog device).
>> >
>> >
>> > Things tried (none working):
>> >     * Blacklisting snd-hda-intel (= HDMI from my GPU) to make sure
CK804 is the only sound chip visible.
>> >
>> >     * amixer set 'IEC958 Playback AC97-SPSA' Playback 100% unmute
>>
>
>>
http://www.realtek.com.tw/products/productsView.aspx?Langid=1&PFid=31&Level=5&Conn=4&ProdID=59
>>
>> Take a look at alc850 datasheet
>>
>> Simple mixer control 'IEC958 Playback AC97-SPSA',0
>>   Capabilities: volume volume-joined
>>   Playback channels: Mono
>>   Capture channels: Mono
>>   Limits: 0 - 3
>>   Mono: 0 [0%]
>>
>> This is not volume control, it is SPDIF out Slot Assignment in ac97 link
>>
>>
_______________________________________________
Alsa-devel mailing list
Alsa-devel@alsa-project.org
http://mailman.alsa-project.org/mailman/listinfo/alsa-devel

Re: [bug] SPDIF (digital-out) not working on NForce4/CK804

[Gilles Hemberg]

Hi,

It works!



Solution (in OpenElec 4.2.0; settings on other distros would be similar):
* Create custom asound.state in /storage/.config/ with the following 
contents: http://sprunge.us/SiHH (this state-file will, among other 
things, unmute the appropriate mixer controls, set proper output 
formats, ...).

* Load the above state file with the following command:

     alsactl nrestore 0 -f /storage/.config/asound.state
     (replace the "0" with the card-number corresponding to CK804 on 
your system)

   You may want to add this command to a custom autostart.sh in 
/storage/.config/ so the state is restored on every boot.

* Create intel8x0.conf in /storage/.config/modprobe.d/ with the 
following contents:

     options snd-intel8x0 spdif_aclink=1
     (I am told that this above setting depends on the specific 
motherboard, so this may not work for everyone: it does work on my ASUS 
A8N-SLI Deluxe)

   This was the final setting that solved the issue for me. I did try 
this setting before, but it seems that some sources on the Internet had 
this mis-written as "options snd-intel-8x0 spdif_aclink=1" (notice the 
extra dash).

* In XBMC, select the SPDIF out as both the audio-device AND the 
passthrough device.



I wanted to post the solution that worked (in my case) here so others 
may be able to benefit from my experience.

Thank you very much for your input Raymond: really appreciated!

Bye!
_____
*Gilles Hemberg*
/gilles.hemberg@gmail.com/
On 04/10/2014 07:07, Raymond Yau wrote:
>
> >
> > Command tried:
> >
> >     speaker-test -c2 -r 48000 -D iec958:CARD=CK804,DEV=0
> >
> > Still no sound coming through AVR...
> >
> > For the sake of completeness, I provide a new alsa-info.sh 
> output:http://sprunge.us/ZWLF(I blacklisted the snd_hda_intel this 
> time just to be on the safe side).
> >
> > The git-link below 
> (http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/cards/NFORCE.conf;hb=HEAD) 
> seems to point to the .conf for nForce2/3; min is a nForce4 (don't 
> know if nForce4 is supposed to use this same .conf).
> >
>
> https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/intel8x0.c?id=a9e996604f77be6f1f4deb0eb1cc2652000054f1
>
> Either use spdif over ac-link or you have to find out how to use 
> nforce4 secondary spdif output
>
> http://www.nvidia.com/page/pg_20041014863476.html
>
> AUDIO
>
> AC ’97 2.3 compliant interface
>
> Supports 2, 4, 6, or 8-channel audio
> Dual AC-Link: supports up to two codecs
> Dual S/PDIF: supports two simultaneous digital outputs; handles stereo 
> PCM or AC-3 output
> 16-bit or 20-bit stereo, 48kHz output and 16-bit input streams across 
> AC-Link
> 24-bit, 96kHz stereo output on the secondary S/PDIF output
>
> >>
> >> > Sorry to bump in like this, but I was advised to submit a 
> bug-report for the ALSA-drivers on my HTPC: no sound comes through out 
> of my AVR when I select the digital output through SPDIF (TOSLINK).
> >> >
> >> > The relevant parts of my HTPC are as follows:
> >> >     * CPU: Athlon64 X2 3800+
> >> >     * Motherboard: ASUS A8N-SLI Deluxe motherboard (BIOS 1805) 
> NForce4 with CK804 sound (relying on a Realtek ALC850 chip)
> >>
> >> >     * RAM: 2x 512 MB DDR-400
> >> >     * GPU: nVidia Geforce GT240 (which carries a HDMI port and 
> uses the snd-
> >> >     * Receiver: Marantz SR7500 (supporting both Dolby Digital 5.1 
> and DTS decoding), connected to motherboard's SPDIF TOSLINK port 
> (optical) + JBL 5.1 speaker-set
> >> >     * OpenElec 4.2.0: Kernel 3.16.3, Alsa 1.0.28
> >> >
> >> >
> >> > Symptoms:
> >> > Speaker-test does not produce any sound. Command used is as follows:
> >> >
> >> >     speaker-test -c2 -r 48000 -D hw:0,2
> >> >
> >> > No sound either from other applications (such as XBMC 13.2).
> >> >
> >> > SPDIF worked flawlessly on the exact same hardware & connections 
> using Win7/XBMC.
> >> > Sound does come through the SPDIF when I use hw:0,0 (= analog 
> device).
> >> >
> >> >
> >> > Things tried (none working):
> >> >     * Blacklisting snd-hda-intel (= HDMI from my GPU) to make 
> sure CK804 is the only sound chip visible.
> >> >
> >> >     * amixer set 'IEC958 Playback AC97-SPSA' Playback 100% unmute
> >>
> >
> >>http://www.realtek.com.tw/products/productsView.aspx?Langid=1&PFid=31&Level=5&Conn=4&ProdID=59
> >>
> >> Take a look at alc850 datasheet
> >>
> >> Simple mixer control 'IEC958 Playback AC97-SPSA',0
> >>   Capabilities: volume volume-joined
> >>   Playback channels: Mono
> >>   Capture channels: Mono
> >>   Limits: 0 - 3
> >>   Mono: 0 [0%]
> >>
> >> This is not volume control, it is SPDIF out Slot Assignment in ac97 
> link
> >>
> >>
>

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Re: [bug] SPDIF (digital-out) not working on NForce4/CK804

[Raymond Yau]

>
> It works!
>
>
>
> Solution (in OpenElec 4.2.0; settings on other distros would be similar):
> * Create custom asound.state in /storage/.config/ with the following
contents:http://sprunge.us/SiHH(this state-file will, among other things,
unmute the appropriate mixer controls, set proper output formats, ...).
>
> * Load the above state file with the following command:
>
>     alsactl nrestore 0 -f /storage/.config/asound.state
>     (replace the "0" with the card-number corresponding to CK804 on your
system)
>
>   You may want to add this command to a custom autostart.sh in
/storage/.config/ so the state is restored on every boot.
>
> * Create intel8x0.conf in /storage/.config/modprobe.d/ with the following
contents:
>
>     options snd-intel8x0 spdif_aclink=1
>     (I am told that this above setting depends on the specific
motherboard, so this may not work for everyone: it does work on my ASUS
A8N-SLI Deluxe)
>
>   This was the final setting that solved the issue for me. I did try this
setting before, but it seems that some sources on the Internet had this
mis-written as "options snd-intel-8x0 spdif_aclink=1" (notice the extra
dash).
>
> * In XBMC, select the SPDIF out as both the audio-device AND the
passthrough device.
>
>

Advanced information - PCI Vendor/Device/Subsystem ID's
!!-------------------------------------------------------

00:04.0 0401: 10de:0059 (rev a2)
Subsystem: 1043:812a

You can add pci subsystem id into spdif_aclink_defaults

static struct snd_pci_quirk spdif_aclink_defaults[] __devinitdata = {
SND_PCI_QUIRK(0x147b, 0x1c1a, "ASUS KN8", 1),
{ } /* end */
};

>> >>
>> >> Simple mixer control 'IEC958 Playback AC97-SPSA',0
>> >>   Capabilities: volume volume-joined
>> >>   Playback channels: Mono
>> >>   Capture channels: Mono
>> >>   Limits: 0 - 3
>> >>   Mono: 0 [0%]

Does it use slot front left and front right slots for pcm playback?

Does it use spdif left/right slot for ac3 passthrough?  default for alc850
after cold boot

Can it get signal from the other two setting : rear left/right slot or
center/lfe slot?