[mythtv-users] No sound in mythtv, but other applications use sound fine

Leo Przybylski przybyls at engr.arizona.edu
Mon May 2 03:47:03 UTC 2005

Once in awhile, I'll notice my backend output shows:
Can't read vbi data

Would this be harmful to recording?

Leo Przybylski

Kendric Beachey wrote:

>I had pretty much the same problem recently.  A good friend gave me this advice:
>You need to look into using the "dmix" functionality of ALSA instead
>of the deprecated (on 2.6 kernels) OSS sound platform.
>Look at http://www.mythtv.info/moin.cgi/DigitalSoundHowTo to see about
>setting up an .asoundrc. Mostly you download the one he provides and
>probably change the "device" parts inside it to correspond to your
>digital output. Also uncomment the appropriate line to pick what you
>want as "default".
>Then type this in as the sound device in myth "ALSA:mixed-analog".
>To use Myth's volume control with ALSA it's as simple as
>putting "mixed-analog" (as opposed to "ALSA:mixed-analog" in the sound
>device part) in the mixer device setting.  I left "Master" in the
>control part.
>In /etc/mplayer.conf, set "ao=alsa:device=mixed-analog"
>If you use arts in KDE (which is the default), tell it to use the
>mixed-analog too.  Go into sound system settings, force it to use
>ALSA, and override the device location and put mixed-analog in there.
>Then go ahead and play some Metallica in noatun or Juk while you watch
>TV or a recording.  Listen the sounds mix!
>Hope this helps.

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