[alsa-devel] S/PDIF on NVidia CK804 not working

[Robert Hancock]

On Sun, Sep 20, 2009 at 12:21 PM, Mitko Haralanov
<voidtrance at comcast.net> wrote:
> Hi all,
>
> I am new to the list and was hoping that someone here could give me
> some help and advise as I am stuck and none of my research has turned
> anything up.
>
> I am having trouble getting any sound out of the S/PDIF port on my
> built-in sound card. The card is recognized and 'aplay -L' shows the
> iec958 device (as evident by the attached alsa-info.txt file) but when
> I try to play any sound through it (using aplay) I get one of two
> errors:
>
> 1. If I use the iec958 device directly:
> $ aplay -D iec958 /usr/share/sounds/alsa/Front_Center.wav
> Playing WAVE '/usr/share/sounds/alsa/Front_Center.wav' : Signed 16 bit
> Little Endian, Rate 48000 Hz, Mono aplay: set_params:984: Channels
> count non available
>
> 2. If I try to use the plug:iec958:
> $ aplay -D plug:iec958 /usr/share/sounds/alsa/Front_Center.wav
> Playing WAVE '/usr/share/sounds/alsa/Front_Center.wav' : Signed 16 bit
> Little Endian, Rate 48000 Hz, Mono
> (the sound file seems to play but there is no audio coming out of the
> receiver)
>
> Looking through the ALSA website, I see that my sound device is
> supported. Configuring /etc/asound.conf and /etc/modprobe.conf as per
> the ALSA website yields the same results as above.
>
> Can anyone please, help me get my S/PDIF working?
> Thank you very much!

Can you check if there are any mixer controls or switches which have any effect?