gtf(1)

gtf1

Calculate vesa gtf mode lines

Usage

gtf h-resolution v-resolution refresh [{-v | --verbose}] [{-f | --fbmode}] [{-x | --xorgmode}]

Overview

Gtf is a utility for calculating VESA GTF modes. Given the desired horizontal and vertical resolutions and refresh rate (in Hz), the parameters for a matching VESA GTF mode are printed out. Two output formats are supported: mode lines suitable for the Xorg xorg.conf(5) file, and mode parameters suitable for the Linux fbset(8) utility.

Options

-v|--verbose

Enable verbose printouts This shows a trace for each step of the computation.

-x|--xorgmode

Print the mode parameters as Xorg-style mode lines. This is the default format.

-f|--fbset

Print the mode parameters in a format suitable for fbset(8).

Releases

10 releases since Debian 5.0 (Lenny); the text changed 9 times.

  1. 5.0
  2. 6.0
  3. 7
  4. 8
  5. 9
  6. 10
  7. 11
  8. 12
  9. 13
  10. Arch

Author

Andy Ritger.

This program is based on the Generalized Timing Formula (GTF(TM)) Standard Version: 1.0, Revision: 1.0. The GTF Excel(TM) spreadsheet, a sample (and the definitive) implementation of the GTF Timing Standard is available at <ftp://ftp.vesa.org/pub/GTF/VTF_V1R1.xls>.

From xorg-server 21.1.25-2 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.