I had such a problem (ubuntu 9.04) the simplest solution in my case was to disable Pulseaudio and use ALSA only.
With this tutorial is quite straight forward:
http://idyllictux.wordpress.com/2009/04/21/ubuntu-904-jaunty-keeping-the-beast-pulseaudio-at-bay/
Dear list: hello to everybody....i have a problem, in the university i
request about a second partition with ubuntu 9.04 for working with pd, they
use a mac intel intel core 2 duo, desktop line, i installed pd and work, but
the sound no...in all the system.
Any idea or command in terminal? dependences? pulse audio????
Thanks a lot
Jos?
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