Took a couple of tries and a hardware switch, but my mythbuntu 12.04-2 is up and running on my Samsung 42" plasma. Switched a 32g SSD for a 60g SSD which will handle livetv. Plus I found the audio configuration to get audio through HDMI, that's nice. Though I had a pretty nice 2.1 sound system set up. One niggling thing, it looks like mythfilldatabase is not updating daily. Will keep an eye on that. Patrick Archibald helped me a good deal and I thank him. It is possible to run Linux for 11 years and remain ignorant of many things.