ever since I got my rMBP its had trouble detecting the display. It will work half the time I plug it in but typically won't do anything when I plug it in. I usually fix this by restarting the computer and then the display will work perfectly. Obviously, this is annoying but today it started doing something else weird. I have an external HDD plugged into the display (via firewire). The same issue happened as usual, didnt detect display. So I restarted it and it worked fine...until the HDD mounted. As soon as it mounted, the display disconnects. This happened twice more as I restarted it. Any ideas? I'm about to throw the display against the wall.