[mythtv-users] 2 Channel Audio Not Working-- Help

[Allen Edwards]

What I always recommend, and has worked for several people is to
rename or delete asound.conf and .asoundrc.  Set the passthrough
device to ALSA:iec958:{ AES0 0x02 } and the audio output device to
ALSA:spdif.  If you are running Fedora, get rid of Pulse Audio (not
trivial apparently).  Turn on iec958 in alsamixer.

Allen



On Fri, Oct 17, 2008 at 2:56 PM, Hans Houwaard <hans at ginder.xs4all.nl> wrote:
> Weirdness,
>
> I already have this exact same asound.conf, but I recently lost playback on
> audio in mythtv for the media mp3 player. There is no sound, while before
> there was. The only update I saw the was installed was a new version of hal.
>
> Since my asound.conf already has this config, I have no clue how to get audio
> playback back. Sound in TV with DVB and in Video using vlc or xine still
> works.
>
> Hans Houwaard
>
> Op Friday 17 October 2008 22:20:46 schreef Jason McKnight:
>> Thanks!
>>
>> I'll try that this weekend.
>>
>> ----- Original Message -----
>> From: "Seth Daniel" <mythtv.org at sethdaniel.org>
>> To: mythtv-users at mythtv.org
>> Sent: Friday, October 17, 2008 3:28:41 PM GMT -05:00 US/Canada Eastern
>> Subject: Re: [mythtv-users] 2 Channel Audio Not Working-- Help
>>
>> On Fri, Oct 17, 2008 at 03:04:01PM -0400, Jason McKnight wrote:
>> > I have a machine running Mythbuntu 8.04 with audio being piped out via
>> > the optical (iec958 I think). I recently lost audio on any stereo sound.
>> > I'm not sure if it was an update or something I changed in a config.
>> > Anything with 5.1 is great, but music and movies encoded in stereo only
>> > play with no sound.
>> >
>> > I have tried all sorts of settings in alsamixer and in the general setup
>> > inside Myth, but the only thing I can accomplish is getting 5.1 sound to
>> > stop.
>> >
>> > Any ideas or suggestions?
>>
>> I had the same issue when I upgraded my myth box to Ubuntu 8.04 (it
>> worked fine before then).  I tried all sorts of things.  The only thing
>> that got it to work again was this .asoundrc:
>>
>>   pcm.!default {
>>     type plug
>>     slave {
>>       pcm "spdif"
>>       rate 48000
>>       format S16_LE
>>     }
>>   }
>>
>>
>> I found it by searching the gossamer-threads archive of the mythtv-users
>> mailing list.  Oddly it was this thread:
>>
>> http://www.gossamer-threads.com/lists/mythtv/users/175424#175424
>>
>> where I found it.  The OP was having the *opposite* problem (2 channel
>> audio was fine, but he couldn't play 5.1).
>>
>> Alsa is a black box to me.  I have no idea what the above does.  I also
>> don't know why it was working without this .asoundrc and then stopped
>> working when I upgraded to Ubuntu 8.04.
>>
>> I hope the above helps.
>
>
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