[mythtv-users] Help with Digital Sound passthrough Realtek ALC882 (HDA-Intel) with FC5_64

[mikepolniak]

On 10:58 Thu 16 Nov     , Richard Dale wrote:
> Hi Gene,
> 
> I'd be interested to know if you solve this problem.
> 
> I have a Gigabyte board with the same sound chip onboard and had similar
> issues.  I was once able to get digital sound (eg DD 5.1) through on it but
> it never stayed after a reboot and I was unable to replicate the previous
> steps I took to get it.
> 
> So, I suspect an ALSA problem.
> 
I have a Gigabyte 965P-DS3 with a ALC882 chip. I use the optical output
to my AV receiver for digital sound DD 5.1. I got it working with this
setup (from a post on this list):

In mythfrontend->Setup

Audio Output Device: ALSA:iec958
Passthrough device: ALSA:iec958
Enable AC3 to SPDIF Passthrough

then run this:

amixer set IEC958 mute
aplay -D spdif /usr/share/sounds/alsa/Front_Center.wav
amixer set IEC958 unmute
mythfrontend

I don't use a .asoundrc file.