I have a laptop whose display only seems to come on when an external monitor is plugged into the side VGA port. I'm running Vista by the way. When I unplug the external monitor, the display turns off for a second, comes back on for a second and then finally off. You can also hear the Vista ker-clunk, ker-clunk a few times as if it's detected a change in video.
Just for fun, I brought up the Nvidia control panel and set it to laptop display (had the external hooked up of course). I unplugged the external monitor and waited 10 or so seconds while the laptop did it's thing. The screen is now black and I plugged in the external monitor. Nvidia briefly showed the display as analogue before showing laptop display 5 seconds later as it switched over. I did hook up an svideo cable to my flat screen and Nvidia shows that as TV. So I'm not sure what this analogue display thing is about.
Any ideas? Thanks.
I could always youtube what I'm seeing.