The pixel size 1056x729 is non standard and (probably) is not understood by XFree86. Reboot and log in as root; 1) If you can use vi or emacs go to the directory /etc/X11 and edit XF86Config and locate the line that has Modes and replace the "1056x729" with "800x600" 1024x768" as below. Section "Screen" Identifier "Screen0" Device "Card0" Monitor "Monitor0" DefaultDepth 24 SubSection "Display" Depth 24 Modes "800x600" "1024x768" EndSubSection EndSection 2) If you are not secure in direct editing run; redhat-config-xfree86 -- jludwig <wralphie@xxxxxxxxxxx>