I can confirm that is a driver issue. I had this problem (still not solved) in windows after a catalyst driver upgrade (I didn't remember which version).
Recently I have installed ubuntu 12.04 on the same machine (dual boot) and I have the same problem: no hdmi output after turning off tv (stand by). When I turn on tv the hdmi output device in sound configuration (Juniper HDMI Audio Radeon HD 5700 Series) is gone. To get it back I have to unplug the hdmi cable and plug it again or to turn the tv off, but no stand by (hard off). I hope this helps. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1001842 Title: No Audio from HDMI After Switching Monitor Off / On To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1001842/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
