gnome-gamma-tool
A command-line tool that lets you change gamma in GNOME and Cinnamon (with Wayland). You can also adjust contrast and brightness. It works by creating a color profile with the VCGT table, so that changes are persistent and don't interfere with other settings like night light. (by zb3)
xcalib
Load 'vcgt'-tag of ICC profiles to X-server and MS-Windows. Works on calibration stage, which can be a precondition for display ICC color conversions. (by OpenICC)
gnome-gamma-tool | xcalib | |
---|---|---|
5 | 2 | |
86 | 66 | |
- | - | |
3.7 | 6.0 | |
2 months ago | 25 days ago | |
Python | C | |
- | GNU General Public License v3.0 or later |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
gnome-gamma-tool
Posts with mentions or reviews of gnome-gamma-tool.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-01-22.
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Tune your low quality display by reducing gamma
I purchased a mint condition T490 recently but I found the display to be inferior compared to the touchscreen of my T460. Both have 45% NTSC coverage but the T460 is pretty good in my opinion while I thought the T490 is too bright, almost washed out (it came with the standard FHD IPS AUO panel). Then I realized that it's actually the gamma that is too much for my liking and this is something that you can control from software. So I set it to 90% with this tool and voilá the display now has more contrast and looks much better to me. Difference is pretty big actually, it went from I want to replace it to it's perfectly fine in a blink of an eye. Absolutely recommended!
- Desperately need to adjust saturation
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Setting screen gamma under Gnome Wayland?
I haven't tried it yet myself, but gnome-gamma-tool looks promising.
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Adjust Gamma in Wayland
Try using this
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Setting Contrast Value in Wayland
However, this does not work in Wayland since it obviously belongs to the X Window System. I started searching the web for a possible solution and found wl-gammactl, which is a GUI for wlroots (https://github.com/mischw/wl-gammactl) and the gnome-gamma-tool (https://github.com/zb3/gnome-gamma-tool), but neither of them seemed to work because of missing dependencies, which can't be installed or invalid version numbers of required packages (e.g. found 1.20 but need: '>=1.23'). When attempting to build the gnome-gamma-tool, the following error message appears (despite Colord being installed):
xcalib
Posts with mentions or reviews of xcalib.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2021-04-07.
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The "formula" behind xcalib?
The formulas which xcalib uses to fill out the lookup table based on its command line arguments are in the source code: https://github.com/OpenICC/xcalib/blob/master/xcalib.c
What are some alternatives?
When comparing gnome-gamma-tool and xcalib you can also consider the following projects:
gromit-mpx - Gromit-MPX is an on-screen annotation tool that works with any Unix desktop environment under X11 as well as Wayland.
wl-gammactl
LightBulb - Reduces eye strain by adjusting gamma based on the current time
nautilus-pdf-tools - Tools to work with PDF files from Nautilus
glum - High performance Python GLMs with all the features!
imaging - Imaging is a simple image processing package for Go
ddcutil - Control monitor settings using DDC/CI and USB