CVT(1)                               General Commands Manual                               CVT(1)

NAME
       cvt - calculate VESA CVT mode lines

SYNOPSIS
       cvt [-v|--verbose] [-r|--reduced] h-resolution v-resolution [refresh]

DESCRIPTION
       Cvt  is  a utility for calculating VESA Coordinated Video Timing modes.  Given the desired
       horizontal and vertical resolutions, a modeline adhering to the CVT standard  is  printed.
       This modeline can be included in Xorg xorg.conf(5)

OPTIONS
       refresh Provide  a  vertical  refresh  rate  in Hz.  The CVT standard prefers either 50.0,
               60.0, 75.0 or 85.0Hz.  The default is 60.0Hz.

       -v|--verbose
               Warn verbosely when a given mode does not completely  correspond  with  CVT  stan‐
               dards.

       -r|--reduced
               Create  a  mode  with reduced blanking.  This allows for higher frequency signals,
               with a lower or equal dotclock. Not for Cathode Ray Tube based displays though.

SEE ALSO
       xorg.conf(5), gtf(1)

AUTHOR
       Luc Verhaegen.

       This program is based on the Coordinated Video Timing  sample  implementation  written  by
       Graham   Loveridge.   This   file   is  publicly  available  at  <http://www.vesa.org/Pub‐
       lic/CVT/CVTd6r1.xls>. CVT is a VESA trademark.

X Version 11                            xorg-server 1.19.2                                 CVT(1)

usage: cvt [-v|--verbose] [-r|--reduced] X Y [refresh]

 -v|--verbose : Warn about CVT standard adherance.
 -r|--reduced : Create a mode with reduced blanking (default: normal blanking).
            X : Desired horizontal resolution (multiple of 8, required).
            Y : Desired vertical resolution (required).
      refresh : Desired refresh rate (default: 60.0Hz).

Calculates VESA CVT (Coordinated Video Timing) modelines for use with X.