[mythtv-users] SPDIF howto? C-Media card

Josh TwoOneSix at thatclothingco.com
Thu Feb 7 14:09:48 UTC 2008


On Feb 7, 2008 2:00 AM, Big Wave Dave <bigwavedave at gmail.com> wrote:

> On Feb 6, 2008 10:58 PM, Big Wave Dave <bigwavedave at gmail.com> wrote:
> > On Feb 6, 2008 4:43 PM, Mark Hutchinson <mark at onnow.net> wrote:
> > > Beating my head against the wall here.
> > > C-Media based card with SPDIF out.
> > > Just wanting to get this working.
> > >
> > > In Mythfrontend, audio setup, what is my device?
> > >
> > > Here is some output.  I am not sure how to test it from command line.
> > > I have the SPDIF connected to some speakers with the optical, but cant
> > > get any sound out.
> > >
> > > aplay -L
> > >
> > > 00-02: CMI8738-MC8 : C-Media PCI IEC958 : playback 1 : capture 1
> > > 00-01: CMI8738-MC8 : C-Media PCI 2nd DAC : playback 1
> > > 00-00: CMI8738-MC8 : C-Media PCI DAC/ADC : playback 1 : capture 1
> > > [root at markmythhd ~]# aplay -L
> > > default:CARD=CMI8738MC8
> > >      C-Media PCI CMI8738-MC8, C-Media PCI IEC958
> > >      Default Audio Device
> > > front:CARD=CMI8738MC8,DEV=0
> > >      C-Media PCI CMI8738-MC8, C-Media PCI DAC/ADC
> > >      Front speakers
> > > iec958:CARD=CMI8738MC8,DEV=0
> > >      C-Media PCI CMI8738-MC8, C-Media PCI DAC/ADC
> > >      IEC958 (S/PDIF) Digital Audio Output
> > > null
> > >      Discard all samples (playback) or generate zero samples (capture)
> > >
> > I would recommend looking at:
> >
> http://www.mythtv.org/wiki/index.php/Configuring_Digital_Sound_with_AC3_and_SPDIF
> > and
> > http://www.mythtv.org/wiki/index.php/Configuring_Digital_Sound
> >
> > Dave
> >
> > ----------------------------------------------
> > http://www.techsneeze.com
> >
>
> Also....
> http://www.mythtv.org/wiki/index.php/Asoundrc_CMI8738-MC6
>
> Best of luck!
>
> Dave
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Those articles are good reference... check them out. What distro are you
running?

I recently upgraded one of my frontends to Fedora 8 and I had to completely
remove PulseAudio so I could get my C-Media SPDIF out to work.

Josh
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