Gefen makes a lil gizmo called the DVI detective N. Which you can use to store the EDID data and put it in line between the image pros and the mac. I used the devices when I was using a DVI switch between my Mac and the PJ ; the machine not up would forget that it is supposed to be outputting to a second monitor. This device will keep the mac tricked into thinking a monitor is always plugged in and store the EDID for the end result. The N version will work with analog the previous version would not.

Ryan Brown
Day One/ MP Productions
Little Rock, AR