I attached my laptop to my big tele to watch a film. Used the display options, logged back in and then out, and everything worked fine. I then tried to open the video (.avi file) and it keeps closing before it can open n both MPlayer and VLC. I also had Desktop Effects set on Extra and compiz enabled. Now its set to none and I can't enable them, it also tries to search for a driver when i've never had to do that before.
Any ideas?