OK, I did aptitude update;aptitude upgrade and rebooted today, and it appears to have fixed itself. So (a) presumably it wasn't in fact the kernel driver (b) it's not a problem today! (Might be tomorrow, but that's what I get for running an alpha ;-) )
** Changed in: linux (Ubuntu) Status: New => Fix Released -- sound broken in 2.6.30-10-generic for Intel 82801CA-ICH3 with AD1886A https://bugs.launchpad.net/bugs/393629 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