[mythtv-users] tearing my hair out with audio over hdmi

tim draper veehexx at gmail.com
Wed Mar 9 18:33:55 UTC 2011

i had a similar issue; speaker-test and the alsamixer text-base setup said
things should of been working fine. however i would get no sound or volume
level in the X environment. Nvidia 210 here, using HDMI.

the fix?
do you have /etc/asound.conf present?

i found mine was missing, so after a quick nano with the following inserted
into it, things worked fine!

pcm.!default {
> type plug
> slave.pcm {
> type hw
> card 0
> device 7
> }
> }

the card and device values need to be set according to your hardware and
what you used in speaker-test. im using the the 1.0.24 alsa driver release.
Weirdly, i had this working pretty flawlessly last week before reinstalling
mythbuntu. then i encountered these issues. took me ages to find this info
too, i think i just ended up trying anything 'alsa' and 'no sound' related
rather than nvidia/hdmi specific.

hope that helps

On 9 March 2011 18:02, Matt Harrison <iwasinnamuknow at genestate.com> wrote:

> On 09/03/2011 17:56, George Nassas wrote:
> > On 2011-03-09, at 12:07 PM, Matt Harrison wrote:
> >
> >> You rebuild the kernel drivers too? I thought they were completely
> >> seperate...at least, unless your using the old alsa drivers package?
> >
> > Yes, that's the only thing I rebuilt. The other stuff, libs, utils,
> firmware is whatever came with my distro. From what I was reading there was
> a lot of driver work done for hdmi audio between 1.0.23 and 1.0.24.
> >
> > If, after rebooting, /proc/asound/version says 1.0.24 and you're still
> not getting sound then I'm giving you a bum steer.
> Hehe, well any information is nice at this stage...stops me getting out
> the chainsaw ;)
> I've got someone checking over some of my files atm, kernel config
> etc...so hopefully we'll have some more ideas coming in soon.
> Thanks anyway for your help
> Matt
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