Comment 2 for bug 999254

I might have the same issue.
When selecting a movie which is a .ISO file, the movie starts fine and shows the dvd-menu.
Then I choose to play the movie and the screen becomes black.
I can see the Denon audio receiver doesn't receive a HDMI signal anymore as it shows the Denon logo.
The music is still playing.

When you press "tab" you get the xbmc bar on top of the movie, and you can see the movie playing in the back. If you again go to full screen again without the xbmc bar, the tv again becomes black.

When playing a .mkv file, the problem is not active.
When I play again the .ISO file I don't have the problem anymore.
I've noticed this issue a few times now.

Using xtreamer with OpenELEC_PVR Version: 1.95.3
connected to Denon 3310
connected to a Sony tv, which brand I will never buy again because of the extreme clouding :(