1GTF(1) General Commands Manual GTF(1)
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6 gtf - calculate VESA GTF mode lines
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9 gtf h-resolution v-resolution refresh [-v|--verbose] [-f|--fbmode]
10 [-x|--xorgmode]
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13 Gtf is a utility for calculating VESA GTF modes. Given the desired
14 horizontal and vertical resolutions and refresh rate (in Hz), the
15 parameters for a matching VESA GTF mode are printed out. Two output
16 formats are supported: mode lines suitable for the Xorg xorg.conf(5)
17 file, and mode parameters suitable for the Linux fbset(8) utility.
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21 -v|--verbose
22 Enable verbose printouts This shows a trace for each step of
23 the computation.
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25 -x|--xorgmode
26 Print the mode parameters as Xorg-style mode lines. This is
27 the default format.
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29 -f|--fbset
30 Print the mode parameters in a format suitable for fbset(8).
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33 xorg.conf(5), cvt(1)
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36 Andy Ritger.
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38 This program is based on the Generalized Timing Formula (GTF(TM)) Stan‐
39 dard Version: 1.0, Revision: 1.0. The GTF Excel(TM) spreadsheet, a
40 sample (and the definitive) implementation of the GTF Timing Standard
41 is available at <ftp://ftp.vesa.org/pub/GTF/VTF_V1R1.xls>.
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45X Version 11 xorg-server 1.17.4 GTF(1)