cvt is now bundled in xorg. the history of CVT: DDC 1994 DMT = Discrete Monitor Timings started in 1989 DMT Version 1.0, Revision 0.8 (1998) = 28 VESA Standards + 3 VESA Guidelines (approved, but not endorsed by VESA) + 2 Industry Standards. GTF in 1996 designed for CRT doesn't account for different aspect ratios CVT in 2003 to replace GTF CVT-RB = Coordinated Video Timings-Reduced Blanking http://www.dell.com/downloads/global/vectors/2003_cvt.pdf http://www.vesa.org/Public/EEDIDguideV1.pdf