I also have this bug. Changing the power save setting for the sound system as found here:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/442463/comments/4
Fixed the issue for me.
I also have this bug. Changing the power save setting for the sound system as found here:
https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/442463/ comments/ 4
Fixed the issue for me.