[mythtv-users] HELP!!! Sound lost from all but HDTV shows.

[Rich West]

Marc wrote:
>
> Sorry if this gets duplicated… But apparently the moderator has not 
> approved my email from last night…
>
> I need help..
>
> I watched recordings Sunday night without any issues, Both recorded 
> from HD-5000 and from PVR-350/500.
>
> I watched a downloaded anime in Xine Sunday night, again without any 
> issues.
>
> Monday night Oct 1^st came home and watched an HD show and then went 
> to watch a show from the PVR.. and I had no audio. Try as I might I 
> could not get the audio to play at all.
>
> I checked the anime I watched the night before, It too would not play 
> audio.
>
> I play any show recorded with the HD card and I get audio.
>
> I send all my audio out through my SPDIF optical out from my Mobo.
>
> Again I mention that I had not changed anything on my system in the 
> past month prior to this happening. Attempting to resolve this I 
> recompiled my kernel using alsa included with the kernel and not a 
> separate package. Both were and are 1.0.14
>
> Kernel : Linux version 2.6.22-gentoo-r5 (root at asgard) (gcc version 
> 4.1.2 (Gentoo 4.1.2 p1.0.1)) #1 SMP Tue Oct 2 19:59:45 EDT 2007
>
> Alsa : Advanced Linux Sound Architecture Driver Version 1.0.14 (Thu 
> May 31 09:03:25 2007 UTC).
>
> lspci
>
> <..snip..>
>
> lsmod
>
> <..snip..>
>
> aplay -l
>
> **** List of PLAYBACK Hardware Devices ****
>
> card 0: ICH5 [Intel ICH5], device 0: Intel ICH [Intel ICH5]
>
> Subdevices: 1/1
>
> Subdevice #0: subdevice #0
>
> card 0: ICH5 [Intel ICH5], device 4: Intel ICH - IEC958 [Intel ICH5 - 
> IEC958]
>
> Subdevices: 1/1
>
> Subdevice #0: subdevice #0
>
> aplay -L
>
> default:CARD=ICH5
>
> Intel ICH5, Intel ICH5
>
> Default Audio Device
>
> front:CARD=ICH5,DEV=0
>
> Intel ICH5, Intel ICH5
>
> Front speakers
>
> surround40:CARD=ICH5,DEV=0
>
> Intel ICH5, Intel ICH5
>
> 4.0 Surround output to Front and Rear speakers
>
> surround41:CARD=ICH5,DEV=0
>
> Intel ICH5, Intel ICH5
>
> 4.1 Surround output to Front, Rear and Subwoofer speakers
>
> surround50:CARD=ICH5,DEV=0
>
> Intel ICH5, Intel ICH5
>
> 5.0 Surround output to Front, Center and Rear speakers
>
> surround51:CARD=ICH5,DEV=0
>
> Intel ICH5, Intel ICH5
>
> 5.1 Surround output to Front, Center, Rear and Subwoofer speakers
>
> null
>
> Discard all samples (playback) or generate zero samples (capture)
>
> As I said anything recorded from the HD card plays audio whether or 
> not the actual source was a True HD show or it it was an NTSC 
> broadcast recorded from a digital channel will play via passthrough.
>
> Please help…
>
> My only other option is that my receiver went bad but if that was the 
> case then I don’t think any of the passthrough should work…
>
> Tell me if you need any more info…
>

If you are pumping everything through SPDIF, then either something 
changed in your asound.conf or within the output device as configured 
within mythtv. Check out the SPDIF wiki entry and go through the steps 
there to confirm that everything is as it should be.
http://www.mythtv.org/wiki/index.php/Configuring_Digital_Sound_with_AC3_and_SPDIF

The finicky thing with pumping everything via SPDIF is that if you have 
just one setting incorrect, it can cause a variety of symptoms..

-Rich