Actually, I believe this is fixed as of precise, as the apparmor policy refuses writes from the container into the /sys/devices/*/uevent files. (udevadm trigger --add writes 'add' into those files).
** Changed in: lxc (Ubuntu) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/948447 Title: Starting an LXC changes the volume (sound!) of the host To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/948447/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs