I should really know the answer to this, but I just can't figure it out.
I have an NVIDIA GeForce FX5200 Home Cinema system. The graphics card has a DVI output (which can be converted to a standard VGA monitor output), and also a USB "breakout" box, which gives phono and S-video outputs.
When I boot up with something connected to the S-video output, the DVI/VGA output is disabled. When I boot up without something connected to the S-video output, the S-video output is disabled, and the DVI/VGA output is enabled. Simply plugging something into the S-video output doesn't enable it.
My problem is that I can't find any way of either having both outputs enabled at the same time, or even switching between the outputs without rebooting. I have looked through all the settings of the graphics card, and can't find anything.
If I remember correctly, there's a key press (something like CTRL+F5) that is used on laptops to change between an external screen and the laptop's screen, but I'm not sure what the key press is, so I can't try it out.
Does anybody know what the key press is, or does anybody have any other ideas?