gtf

calculates VESA Generalized Timing Formula modelines

TLDR

Generate modeline for 1920x1080@60Hz

$ gtf 1920 1080 60

Generate for specific refresh rate

$ gtf [1280] [1024] [75]

Output in X format

$ gtf 1920 1080 60 -x

Verbose output

$ gtf 1920 1080 60 -v

SYNOPSIS

gtf h-pixels v-pixels refresh [options]

gtf calculates VESA Generalized Timing Formula modelines. It generates the timing parameters needed for X11 configuration at specific resolutions.The tool outputs modelines suitable for xorg.conf. It's useful for setting up custom display modes not automatically detected.

PARAMETERS

H-PIXELS

Horizontal resolution.

V-PIXELS

Vertical resolution.

REFRESH

Refresh rate in Hz.

-x

Output in X11 modeline format.

-v, --verbose

Verbose output.

--help

Display help information.

INSTALL

sudo apt install xserver-xorg-core

sudo pacman -S xorg-server

sudo apk add xorg-server

brew install xorg-server

nix profile install nixpkgs#xorg-server

CAVEATS

Modern systems auto-detect modes. May damage older monitors. Use cvt for newer standard.

HISTORY

gtf was developed for XFree86/X.Org to generate VESA GTF compliant modelines for monitor configuration.

gtf