I have the same exact issue! I don't know if this will help, but as long as the HDMI audio isn't working, my TV will display the Dolby symbol, followed by a capital D when pressing the OK button (It is an LG 47LH7020). Once I get it to work by restarting the TV, or switching input modes, the symbol is gone and the audio works until a restart.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1709708 Title: Intel Broxton HDMI, Digital Out, HDMI] Pulseaudio detects output but produces no sound on NUC6CAYH To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1709708/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs