Hey guys, I'm on the latest rMBP. I had no problems using a 27inch monitor to output its full resolution before but one day I had that monitor on and I plugged in my TV via HDMI cable to use all 3 displays at once. Since then, the 27" monitor has been outputting only 1080p and thats the max resolution it allows me. When I'm on the display preferences on the 27" monitor, there arent any resolutions under "Scaled". The box is completely empty. "Best for display" stretches it out completely and it looks awful. I'm using a Mini DP to DP cable. I reset my PRAM hoping it would fix it but nothing! Any suggestions?