In my school, which was just built 3 years ago, we have some older iMacs and Epson projectors in each room. I think that the projectors are Epson PowerLite 83V+, but I can't tell for sure (being attached to the ceiling makes things difficult). In one of the rooms, when I changed the display settings form mirror to separate, so that I could get presenter notes on the screen, it worked fine. After I put the screen back, the iMacs screen would got pixilated and all of the icons on the desktop doubled in size and half completely went away. When I tried to change the resolution back to normal, but it would only work on one screen. If the iMac worked, the projector didn't. If the screen worked, the iMac didn't. It would only work if the projector was unplugged from the computer. The teacher uses the computer to project fairly often so just unplugging it isn't going to work. Does anyone have any ideals? (I'm just glad I wasn't in any kind of trouble)
Last edited: