[mythtv-users] 5.1 wrong speaker problem

[Ken Bass]

On 1/26/2011 9:59 AM, Jean-Yves Avenard wrote:
>
> the other way around it is to not use multi-channels PCM but force
> using AC3 or DTS only.
> In the advanced audio config, check the StereoPCM box.
>
> Problem solved.
>
>
Can you explain what that checkbox does. I did not check it because it 
says to use it only if your amp only supports 2 channels PCM (typically 
an old HDMI 1.0 device). Multi-channels audio will be re-encoded to AC3 
when required.

So does this mean software is having to re-encode to AC3 when this 
advanced option is checked? On a slower zotac atom FE is this going to 
be a problem?

At quick glance, it appears to be working with this turned on.

Despite my previous post that adding the 'pcm.!hdmi {' to asound.conf 
fixed it, that is not really true.
It fixed it when testing using speaker-test and when manually running 
the FE. But after reboot, the change causes no audio in mythtv.

Looking at the logs, I see:

Jan 26 10:16:20 frontend pulseaudio[1766]: module-alsa-card.c: Failed to 
find a working profile.
Jan 26 10:16:20 frontend pulseaudio[1766]: module.c: Failed to load  
module "module-alsa-card" (argument: "device_id="0" 
name="pci-0000_00_08.0" card_name="alsa_card.pci-0000_00_08.0" 
tsched=yes ignore_dB=no 
card_properties="module-udev-detect.discovered=1""): initialization failed.

Having that statement in there is somehow messing up boot-time init of 
the sound card.