I have two dell p2715qs with each plugged into their own display port on the Mac Pro. When they work they are gorgeous. However I am afraid to turn them off as they won't be connected about one of every 10 times. I can pull the plug and back in again and it sees the monitor, but this is a huge pain in the ***.
Has this been fixed yet? I've had them for about three months and this is irritating.