Cvt

lastmod 2020-03-30created 2020-03-303 edits

calculate VESA CVT mode lines.

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)

Calculating a modeline for the desired resolution

$ cvt 1600 900

It prints output like the following.

1600x900 59.95 Hz (CVT 1.44M9) hsync: 55.99 kHz; pclk: 118.25 MHz
Modeline "1600x900_60.00"  118.25  1600 1696 1856 2112  900 903 908 934 -hsync +vsync

Each value in the modeline relates to video timing, as follows.

이름, pixelclock, hdisp, hsync-start, hsync-end, htotal, vdisp, vsync-start, vsync-end, vtotal

See http://www.arachnoid.com/modelines/ for details. Also, pixelclock is the number of pixels that can be output per second.

See also

• Xrandr (x11)
• xorg.conf(5)
• gtf(1)
• XFree86 Modeline