I have two GTX 560s, 2 monitors, and a TV. I’m using BaseMosaic mode to run them all as one big X screen, since Gnome3 doesn’t like multiple X screens. This all works fine if I start the computer with my TV turned on, but as soon as I turn it off, my two monitors switch positions (left and right). As soon as I turn the TV back on, my displays return to the correct locations.
I’ve been trying to fix this using ConnectedMonitor and CustomEDID, but I can’t seem to get it working. Can anyone help me out?