You can turn off the computer and restart and maybe the sound is activated, which should not happen. The normal thing would you connected the hdmi, select that output and functions. What other stories are not sleeping and therefore this is a bug user-facing enormous.
-- No HDMI Audio with Intel HDAudio https://bugs.launchpad.net/bugs/417428 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