Comment 32 for bug 436792

I too have just upgraded from mythbuntu 0.21 to whatever I get in Karmic.

There is a clue if you start up mythfrontend in a bash window:-

2009-10-23 21:45:47.966 WARNING:
2009-10-23 21:45:47.966 WARNING: ***Pulse Audio is running!!!!***
2009-10-23 21:45:47.966 WARNING:
2009-10-23 21:45:47.966 WARNING: You have told MythTV to ignore it.
2009-10-23 21:45:47.966 WARNING:

Only, I can't see where I have asked MythTV to ignore it (no sign of pulseaudio in setup, any clues as to where to look?)

And the trick to getting it to work is, in .bashrc:-

export EXPERIMENTALLY_ALLOW_PULSE_AUDIO=1

you will need to logout and login again, or start another bash window and start mythfrontend in that.