| xcalib(1) | General Commands Manual | xcalib(1) |
NAME
xcalib v0.12.0 - Monitor Calibration Loader
SYNOPSIS
xcalib ICC_FILE_NAME
xcalib -c -d STRING -s NUMBER
[-o NUMBER] [-v]
xcalib -i -d STRING -s NUMBER
[-o NUMBER] [-v] [-n]
[-p[=FORMAT]] [-l] ICC_FILE_NAME | -a
xcalib -g NUMBER -b NUMBER -k
NUMBER -d STRING -s NUMBER [-o
NUMBER] [-v] [-n] [-p[=FORMAT]]
[-l] [-c] ICC_FILE_NAME | -a
xcalib -R NUMBER -G NUMBER -B
NUMBER -d STRING -s NUMBER [-S
NUMBER] [-T NUMBER] [-H NUMBER]
[-I NUMBER] [-C NUMBER] [-D
NUMBER] [-o NUMBER] [-v] [-n]
[-p[=FORMAT]] [-l] [-c] ICC_FILE_NAME |
-a
xcalib -p[=FORMAT] -d STRING -s
NUMBER [-o NUMBER] [-v]
xcalib -h[=synopsis|...] -V --render
STRING [-v]
DESCRIPTION
The tool loads ’vcgt’‐tag of ICC profiles to the server using the XRandR/XVidMode/GDI Extension in order to load calibrate curves to your graphics card.
OPTIONS
Set basic parameters
-d|--display STRING host:dpy
-s|--screen NUMBER Screen Number
-o|--output NUMBER Output Number
-p TEXT # TEXT
-p SVG # SVG
-l|--loss Print error introduced by applying ramps to stdout.
-c|--clear Clear Gamma LUT
Assign
xcalib ICC_FILE_NAME
ICC_FILE_NAME File Name of a ICC Profile
Clear
xcalib -c -d STRING -s
NUMBER [-o NUMBER] [-v]
-c|--clear Clear Gamma LUT
Invert
xcalib -i -d STRING -s
NUMBER [-o NUMBER] [-v] [-n]
[-p[=FORMAT]] [-l] ICC_FILE_NAME | -a
-i|--invert Invert the LUT
Overall Appearance
xcalib -g NUMBER -b NUMBER
-k NUMBER -d STRING -s NUMBER
[-o NUMBER] [-v] [-n]
[-p[=FORMAT]] [-l] [-c] ICC_FILE_NAME |
-a
-g|--gamma NUMBER Specify Gamma (NUMBER:1 [≥0.1
≤5 Δ0.1])
-k|--contrast NUMBER Specify Contrast Percentage (NUMBER:100 [≥1 ≤100 Δ1])
Per Channel Appearance
xcalib -R NUMBER -G NUMBER
-B NUMBER -d STRING -s NUMBER
[-S NUMBER] [-T NUMBER] [-H
NUMBER] [-I NUMBER] [-C NUMBER]
[-D NUMBER] [-o NUMBER] [-v] [-n]
[-p[=FORMAT]] [-l] [-c] ICC_FILE_NAME |
-a
-R|--red-gamma NUMBER Specify Red Gamma (NUMBER:1
[≥0.1 ≤5 Δ0.1])
-S|--red-brightness NUMBER Specify Red Brightness
Percentage (NUMBER:0 [≥0 ≤99 Δ1])
-T|--red-contrast NUMBER Specify Red Contrast Percentage
(NUMBER:100 [≥1 ≤100 Δ1])
-H|--green-brightness NUMBER Specify Green Brightness Percentage (NUMBER:0 [≥0 ≤99 Δ1])
-I|--green-contrast NUMBER Specify Green Contrast Percentage (NUMBER:100 [≥1 ≤100 Δ1])
-C|--blue-brightness NUMBER Specify Blue Brightness Percentage (NUMBER:0 [≥0 ≤99 Δ1])
-D|--blue-contrast NUMBER Specify Blue Contrast Percentage (NUMBER:100 [≥1 ≤100 Δ1])
Show
xcalib -p[=FORMAT] -d STRING
-s NUMBER [-o NUMBER] [-v]
-p|--printramps[=FORMAT] Print Values on stdout.
-p TEXT # TEXT
-p SVG # SVG
GENERAL OPTIONS
General options
xcalib -h[=synopsis|...] -V
--render STRING [-v]
-h|--help[=synopsis|...] Print help text
-h synopsis # Synopsis : List groups - Show all groups including syntax
--render STRING Render
-V|--version Version
-v|--verbose Verbose
ENVIRONMENT VARIABLES
- DISPLAY
-
Under X11 systems this variable will hold the display name as used for the -d and -s option.
EXAMPLES
- Assign the VCGT curves of a ICC profile to a screen
-
xcalib ‐d :0 ‐s 0 ‐v profile_with_vcgt_tag.icc - Reset a screens hardware LUT in order to do a calibration
-
xcalib ‐d :0 ‐s 0 ‐c
SEE ALSO
AUTHOR
Stefan Dohla <stefan AT doehla DOT de>
http://www.etg.e‐technik.uni‐erlangen.de/web/doe/xcalib/
COPYRIGHT
Copyright © 2013-2026 Kai-Uwe Behrmann
License: GPL-2.0 https://opensource.org/license/gpl-2.0
| 15 June 2026 | User Commands |