I have just purchased a Mac Mini with the intent of using it a family machine in place of my old W7. I'm using a KVM adapter to share a monitor (Hyundai) and a wireless keyboard/mouse combo between the Mini and my Ubuntu dev desktop. The Mini defaults to a 1280x1024, and cannot see my Hyundai monitor when I try Detect Displays. The result is a couple of inches of black space on the left and right side of my screen. Strangely enough the screen looks pretty much identical to my Ubuntu screen when, at times, I used to switch back and forth between Ubuntu and W7. It would happen that switching from W7 to Ubuntu I would get a bad resolution. To fix it, all I had to do was going to Displays and it would automatically revert back to the full screen resolution. The Mini problem persists even if I connect it directly to the monitor (bypass KVM).