Here's my problem: The 1080p option in Display Settings is greyed out. My Xbox 360 Elite is plugged to my Samsung Receiver (HT-AS720S) with the HDMI cables that came with the console. From there, another HDMI cable links the receiver to the TV (Samsung LN46A750).
Thing is, my PS3, which is connected in the same way (with another HDMI cable to the receiver of course), can be set to 1080p without any problems in Display Settings (It even shows 1980x1080p @ 60hz on top).
I'd like to know what the problem with the 360 is, and how I may remedy it, thanks.