I have the same problem, then I have install grub2 how it is explain here http://wiki.ubuntuusers.de/GRUB_2 then the sound are work. I don't now what was the problem but perhaps it help you.
-- no audio after upgrade from 9.04 to 9.10 https://bugs.launchpad.net/bugs/460680 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gst0.10-python in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs