Try removing alsa-modules-$(uname -r), enabling the -proposed repo, and dist-upgrading.
** Changed in: alsa-driver (Ubuntu) Status: New => Incomplete -- acer 7720g laptop 3 spkr's 3rd being sub woofer not working https://bugs.launchpad.net/bugs/516725 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