It seems that this is indeed caused by AMD Catalyst driver. There is now beta version of 12.6 which has the following fix:
Disabled HDMI audio when the connected HDTV is powered Off/On. The beta is available here: http://support.amd.com/us/kbarticles/Pages/AMDCatalyst126beta.aspx I am going to test it to see if it fixes the issue. ** Package changed: pulseaudio (Ubuntu) => ubuntu -- 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/+bug/1001842/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
