This workaround fix my problems under feisty. But why is there first with feisty the problem? I hope you include this workaround in the stable feisty release. I included the dmesg output with the blacklisted driver... I don't know whether it helps.
** Attachment added: "dmesg with fix" http://librarian.launchpad.net/6340299/dmesg_fix.txt ** Tags added: alsa -- [feisty] HDA-Intel sound problems https://launchpad.net/bugs/83015 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs