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gtf

calculate VESA GTF mode lines

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

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.

-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).

xorg.conf(5), cvt(1)

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>.

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