Never mind; following the suggestion in http://ubuntuforums.org/showthread.php?p=11056725, I updated my motherboard's BIOS to the latest version and the problem was resolved. This bug can be closed.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/818686 Title: [GA-A75M-UD2H, Realtek ALC889, Green Line Out, Rear] Bad stuttering when playing any sound To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/818686/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs