When I plug in the HDMI,the video works fine, but the sound does not. I've poked around and I think that the HDMI audio may not be being detected.
When I ran aplay -l:
**** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC663 Analog [ALC663 Analog] Subdevices: 1/1
Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 1: ALC663 Digital [ALC663 Digital] Subdevices: 1/1 Subdevice #0: subdevice #0
I've tried installing the pulse audio control and going to the "configurations" tab, but nothing there mentions HDMI.
I've tried reinstalling the alsa mixer and unmuting everything. No dice.
I've tried turning it off and on again. No dice
I'm running Dual Graphics NVidia (proprietary driver) and the open source driver for the Intel N56VZ (Don't know if thats relevant, but there you go)