Same problem, same solution, also on an SMP x86_64. I had aplay, alsactl, and also gnome-settings-daemon in "uninterruptible sleep" state.
$ uname -a Linux glastonbury 2.6.22-14-generic #1 SMP Tue Feb 12 02:46:46 UTC 2008 x86_64 GNU/Linux $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 7.10 Release: 7.10 Codename: gutsy -- Alsa Kernel oops with 2.6.22-14-generic #1 SMP https://bugs.launchpad.net/bugs/175331 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