I've tested both 3.12-RC4 and 3.11.4 kernels and HDMI audio didn't work at all (it is enabled, pulseaudio shows correct output but no sound comes from the TV). With 3.8.0.31 kernel this behaviour shows up only after suspend.
** Tags added: kernel-bug-exists-upstream ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1237105 Title: HDMI audio stop working after system suspend To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1237105/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs