Laptops and video splitters
We have a desktop PC in our hall for the teachers to use with our hall projector. There is a powered video splitter connected to it that outputs the display to the projector and the PC monitor. However, occasionally someone will want to connect their laptop to the projector. When this first happened, I removed the vga cable at the back of the PC and plugged it into the laptops external vga port and did the usual key combination to output to the two sources. Unfortunately this did nothing, I just got a flicker on the laptop screen for a second. To resolve the problem I removed the video splitter out of the equation and it worked fine. So does anyone know if this is normal behaviour when using a video splitter and a laptop? I would prefer to not mess around with cables if I don't need to.