[mythtv-users] Asus A8N-VM board + Alsa AC3 SPDIF

Nick Morrott knowledgejunkie at gmail.com
Wed Jan 17 09:22:53 UTC 2007

On 16/01/07, Venkat Bihari <venkat_bihari at hotmail.com> wrote:
> Hi!
> I've been trying to get 5.1 SPDIF working on my Asus A8N-VM CSM board with
> the optional SPDIF/optical module. I'm using FC6 (2.6.18 kernel) and
> MythtV-0.20 (yum rpm install). I can get only 2-channel sound through SPDIF
> and when I check the box marked to "allow AC3 to SPDIF passthru" in
> Mythfrotnend -> Setup -> General, all I hear is a low-frequency buzz through
> the front-speakers. When I uncheck that option, I get excellent 2-channel
> sound via the coaxial cable to my receiver, but never 5.1. In other words,
> AC3 passthru is not working for me. I've confirmed that it's not the
> receiver (I hooked the same input coax to a DVD player and get proper
> dolby-digital 5.1)

What's your output from

# aplay -l

# aplay -L |egrep "spdif|iec958"

# grep "pcm.digital-hw" -A 3 /etc/asound.conf


MythTV Official wiki:
MythTV users list archive:

"An investment in knowledge always pays the best interest." - Benjamin Franklin

More information about the mythtv-users mailing list