[mythtv-users] spdif with simultaneous analog out (alsa)?

[Misty P]

Richard Woelk wrote:
>> Misty,
>>    It took me a lot of searching to find this asound.conf (attached)
>> but it is working on my folks' Mythtv. I think most of it is
>> overkill,
>> but it works for me so I haven't tried to clean it up. They are
>> using a nForce2 based shuttle board with onboard audio. It uses the
>> snd_intel8x0 module
>>
>> In the mythtv settings page, you have to set the audio output to
>> ALSA:default.
>> Make sure that AC3 & DTS passthrough are checked and the passthrough
>> device to ALSA:iec958:{ AES0 0x02 }
>>
>> Recordings from the PVR-250 and mythmusic work simultaneously from
>> analog and digital outputs.
>> AC3 and DTS tracks from mythdvd (or digital recordings.) are sent
>> directly out the SPDIF output and the analog is muted

Ahh, thanks for that!

It doesn't quite work for me, though...  Things with PCM audio wind up going 
out the analog, and it's *trying* to go out through the SPDIF but something 
is amiss.  (The SPDIF light keeps coming on and going out on the receiver.) 
AC3 does work exactly as you describe.

Unfortunately, since I'm all ATSC OTA, 80% or better of my content has AC3 
on it.  (Or worse, is AC3 except for the commercials...  yuck!)

I guess what I'm trying to do just isn't possible under linux.  (Which seems 
insane, because I do it under windows!)  Thanks for the help, though.