Difference between revisions of "Adjust the Display With xgamma and xrandr"
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-> Red 0.700, Green 0.700, Blue 0.700 | -> Red 0.700, Green 0.700, Blue 0.700 | ||
<- Red 0.900, Green 0.900, Blue 0.900 | <- Red 0.900, Green 0.900, Blue 0.900 | ||
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| + | Restore default | ||
| + | xrandr --output VGA-1 --gamma 1:1:1 --brightness 1.0 | ||
== eye strain relief == | == eye strain relief == | ||
Revision as of 23:45, 12 January 2020
Sadly, this page is just copied from the Linux How Do I: A Linux Q&A page for now. Details on these commands will be added in the future.
Contents
[DISPLAY RESOLUTIONS AVAILABLE FOR MONITOR OR SET FROM COMMAND LINE]
Use the xrandr command. Xrandr is used to set the size, orientation and/or reflection of the outputs for a screen. It can also set the screen size.
If you type 'xrandr' and ENTER you will see info about your current display. See if you are using something like VGA-1, DVI-0, HDMI-1, DP-1, etc etc <- examples only
DO NOT TYPE: xgamma --output VGA-1 --brightness 0 (substitute VGA-1) for your display, this will make your screen black and you will see nothing. Here is a working example:
xrandr --output VGA-1 --brightness 0.75
Learn more
man xrandr
[ADJUST DISPLAY CONTRAST AND TINT FROM COMMAND LINE]
You can Adjust the Display With xgamma and xrandr from the command line. See xrandr above.
xrandr --output VGA-1 --gamma 1:1:1
Use the xgamma command. A gamma value of 1.0 is the default. A gamma value of 0.8 would give you more contrast. A value of 1.4 would be much less contrast. Example usage:
xgamma -gamma 0.8
xgamma - Alter a monitor's gamma correction through the X server. The gamma correction can either be defined as a single value, or separately for the red, green and blue components. Also: -rgamma -ggamma -bgamma
Learn more
man xgamma
testing
$ xgamma -> Red 0.700, Green 0.700, Blue 0.700 $ xrandr --output VGA-1 --gamma 1.5:1.5:1.5 $ xgamma -> Red 0.700, Green 0.700, Blue 0.700 $ xrandr --output VGA-1 --brightness 0.5 $ xgamma -> Red 0.700, Green 0.700, Blue 0.700 $ xgamma -gamma .9 -> Red 0.700, Green 0.700, Blue 0.700 <- Red 0.900, Green 0.900, Blue 0.900
Restore default
xrandr --output VGA-1 --gamma 1:1:1 --brightness 1.0
eye strain relief
The full brightness setting is:
xrandr --output VGA-1 --gamma 1:1:1 --brightness 1.0
The nighttime setting is:
xrandr --output VGA-1 --gamma 1.1:0.8:0.7 --brightness 0.55
