Honored Contributor
Honored ContributorI agree with Reuven. Also if you are driving and LCD panel, the timing may be more critical in the system than if you were driving a CRT.
http://www.xfree86.org/3.3.6/config7.html has some video timing standards to look at. Old CRT's were pretty forgiving on this, but LCD's can be pretty tight on the requirement. You usually can get away with a different pixel clock (IE 25 MHz instead of 25.175) but the sync timings have to be pretty close, so you end up eating the front porch/back porch time to make it work. Pete
