Have you loaded your video drivers? Sometimes that is the problem. I am having a similar problem with my refresh rate. It is set for 60 and should be 75 for 1440x900 (I have a widescreen Acer AL1917W). Let me know.
Originally Posted by mmueller
My flat panel (iiyama Prolite E511S) has a native resolution of 1600x1200.
But max resolution I can set is 1280x1024.