Originally posted by puterguy
To get the "bug", you need to be using DVI (digital) inputs to the LCD screen. Also, you need to have the refresh set at a speed higher than 60Hz.
That is generally an unwise thing to do.
"refresh" on an LCD screen has a different meaning than on a CRT. It determines the number of times a new frame is sent to the LCD, but not the "screen flicker" as on a CRT.
Try running Windows on the machine. You will probably be unable to select a refresh higher than 60Hz.