I installed the latest AMD BETA driver from this site . The installation was perfect. But now I am not able to see my login screen(where you type your password, as you know). My monitor displays "OUT OF RANGE" when I am on my login screen . But I can type in my password and enter into my Desktop without any problem. Probably the login screen resolution is beyond the resolution of my monitor. If that is the case, then how can I change the resolution of the login screen alone? (BTW, my graphic card is ATI Radeon 5570 HD. I have DELL monitor with maximum resolution of 1366x768. Also I can view my desktop without problems.)
PS:- This question is very much similar to this question. But none of the solutions solve the problem in 14.04 which I am using. Note that the problem stated above was also present in Ubuntu 13.10.