[mythtv-users] Strange Audio Problem 0.25

Igor Cicimov icicimov at gmail.com
Wed Jun 13 08:07:12 UTC 2012


Confusing thing here is why Myth offers (ALSA:hdmi:CARD=NVidia,DEV=1) as
output device option which is different from aplay -l output? Shouldn't it
be DEV=3 as I said before?
Maybe the output of aplay -L would be useful too.
 On Jun 13, 2012 5:02 PM, "Jean-Yves Avenard" <jyavenard at gmail.com> wrote:

> Hi
>
>
> On 13 June 2012 13:43, jr <jraymyth at gmail.com> wrote:
>
> > Hmmm.  This is confusing.  Using 7 in that line resulted in a no
> > device found error.  But it got me wondering, so I went thru all of my
> > listed devices with DEV=7, and found one that works.
> >
> > ALSA:dmix:CARD=NVidia,DEV=7
>
> I think you can safely ignore whatever Igor has suggested, none of his
> suggestions make any sense, and even less so with any modern linux
> distributions
>
> From looking at the original logs you have provided:
>
> The audio device you have connected doesn't support AC3/DTS, only stereo
> PCM.
> So yes, you would hear audio because the audio test will only try stereo.
> Here you're trying to play AC3 which your audio device (TV) doesn't
> support.
> You have configured your machine and enable AC3/DTS passthrough.
> Uncheck those. Keep audio as Stereo.
>
> As you're running a very recent version of ALSA, you can see what your
> audio device supports in the help description at the bottom of the
> screen when you move the cursor to the audio device name (here
> ALSA:hdmi:blah
>
> If you believe your TV does support AC3/DTS (which would be very
> surprising but who knows...)
>
> It could be a problem I've seen with very recent version of ALSA if at
> any time you put your PC to sleep and turned it back on before the TV
> was on. The ELD value isn't read properly and ALSA disable some audio
> options
>
> Try rebooting your PC, making sure the TV/amplifier is on before the PC
> reboot.
>
> Jean-Yves
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