Can you try following procedure https://help.ubuntu.com/community/SoundTroubleshooting and report back?
-- no sound after migrate to V8.04 https://bugs.launchpad.net/bugs/227065 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
