Create a new user and see if the new user has sound. If the new user has sound then I had a similar problem after an upgrade and the fix was to delete/rename the asoundrc and asoundrc.asoundconf.conf files in my own home directory and sound came back immediately.
-- [Gutsy] no more audio after update kernel 2.6.22-10 https://bugs.launchpad.net/bugs/134196 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs