This bug has been copied from bug #824757 and has been proposed to be backported to 6.3 z-stream (EUS).
I am going to Verify this bug fix. The original bug doesn't state a particular monitor or group of monitors that it has to work on. I will make another bug against the problem that I found with the Wacom Cintiq 22HD. Verified.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHBA-2012-1450.html