[mythtvnz] HDMI handshake

[Pshem Kowalczyk]

Hi,

Another update - the issue with sound is definitely caused by the
nvidia card/driver. After modifying .xinitrc to respawn frontend
process after it dies (and not rely on init to respawn the whole X)
restarting frontend (crash will have to wait for now) does not break
audio. Restarting whole X - breaks it.

I have also found quite interesting document on the internals of HDMI
on nvidia cards:
ftp://download.nvidia.com/XFree86/gpu-hdmi-audio-document/gpu-hdmi-audio.html

kind regards
Pshem