I had a Dell monitor and now I have an AOC monitor. The last time these worked without any Xrandr tweaking were with Ubuntu 10.10. Since 11.04, the max resolution that I can use on these is 1024x768. I know for a fact that the correct resolution on this monitor should be 1360x768. Even with Precise beta 2, this problem persists. I know I can fix it using Xrandr, but I want to understand how to get Ubuntu to identify the correct possible resolutions the way it did two years ago. Can someone help me?

Thanks in advance for all your help.