Upstream committed a fix for this today - will likely come to 13.10 in a month or two through a kernel update. If you don't want to wait that long, try https://wiki.ubuntu.com/Audio/UpgradingAlsa/DKMS - starting with tomorrow's build the fix should be in there too.
** Changed in: linux (Ubuntu) Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1227491 Title: [IdeaPad U310, Conexant CX20590, Mic, Internal] No sound at all To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1227491/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs