I'm running Ubuntu 13.04 and I'm having issues with my HDMI sounds. I've looked around for posts but most were complaining of the HDMI output not showing at all. If I go to sounds, or check with PulseAudio, the HDMI driver is loaded and shows sound activity on the meter - but nothing's coming out on the tv side. Output Device = HDMI/Display Port 4 (It is a Display Port). Playback is showing ALSA plug-in [plugin-container]: ALSA Playback on "High Definition Audio Controller Digital Stereo (HDMI)"
Any thoughts? Thanks