[mythtv-users] M-Audio Revolution 5.1 and FC6 [Working!]

John P Poet jppoet at gmail.com
Sat Feb 3 00:58:22 UTC 2007


On 2/2/07, Josh <TwoOneSix at thatclothingco.com> wrote:
> Josh wrote:
> > I'm in the process of installing FC6 with a M-Audio Revolution 5.1 sound
> > card. I want to use digital out for my music and DVD... does anyone else
> > currently have this setup running?
> >
> >
> Just wanted to let everyone know that this setup is currently working
> for me using the DigitalSoundHowTo
> (http://www.mythtv.org/wiki/index.php/DigitalSoundHowTo). I can listen
> to music and movies (in 2 channel) without a problem. I still have one
> issue that I'm hoping someone can help me resolve...
>
> When I enable AC3 and DTS passthrough I get no sound. Here is the output
> of 'mythfrontend -v audio':
> 2007-02-02 19:10:49.482 AFD: Warning, video codec 0xa0fecb0
> id(MPEG2VIDEO) type (Video) already open.
> 2007-02-02 19:10:49.554 AFD: Warning, audio codec 0xb5f6d90 id(AC3) type
> (Audio) already open, leaving it alone.
> 2007-02-02 19:10:49.554 AFD: Audio Track #1 is A/V stream #1 and has 6
> channels in the Unknown language(0).
> 2007-02-02 19:10:49.554 AFD: Warning, audio codec 0xb7df5d0 id(AC3) type
> (Audio) already open, leaving it alone.
> 2007-02-02 19:10:49.554 AFD: Audio Track #2 is A/V stream #2 and has 2
> channels in the Unknown language(0).
> 2007-02-02 19:10:49.554 AFD: Warning, audio codec 0xb6c5450 id(AC3) type
> (Audio) already open, leaving it alone.
> 2007-02-02 19:10:49.554 AFD: Audio Track #3 is A/V stream #3 and has 2
> channels in the Unknown language(0).
> 2007-02-02 19:10:49.554 AFD: Warning, audio codec 0xa749050 id(AC3) type
> (Audio) already open, leaving it alone.
> 2007-02-02 19:10:49.555 AFD: Audio Track #4 is A/V stream #4 and has 2
> channels in the Unknown language(0).
> 2007-02-02 19:10:49.555 AFD: Warning, audio codec 0xb9bcfb0 id(DTS) type
> (Audio) already open, leaving it alone.
>
> I am set to:
> Audio output device: ALSA:digital
> Passthrough device: ALSA:digital
> I'm using the /etc/asound.conf from the DSHT on the Wiki. It should also
> be noted that I can't get ANY sound to work in either mplayer or xine,
> but I think that mostly from lack of effort since Myth is so close to
> working the way I want.
>
> --
> Josh
>

I have a M-Audio Delta 410.  To get the S/PDIF on it working, I had to add:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
pcm.ice_spdif {
    type plug
    ttable.0.8 1 # S/PDIF left...Delta 9
    ttable.1.9 1 # S/PDIF right...Delta 10
    slave.pcm ice1712
}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

To my /etc/asound.conf (or ~/.asoundrc) file.

Then, in myth, use ALSA:ice_spdif

My /usr/local/etc/mplayer/mplayer.conf has

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ao="alsa:device=ice_spdif"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

You can also do something like this:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
pcm.!default {
  type plug
  slave.pcm ice_spdif
}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

at the top of your /etc/asound.conf file.

Hope that helps.

John


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