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GTF(1) FreeBSD General Commands Manual GTF(1)
NAME gtf - calculate VESA GTF mode lines
SYNOPSIS gtf h-resolution v-resolution refresh [-v|--verbose] [-f|--fbmode] [-x|--xorgmode]
DESCRIPTION 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).
SEE ALSO xorg.conf(5), cvt(1)
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>.
X Version 11 xorg-server 21.1.9 GTF(1)