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.

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--- Tranlated By Open Ai Tx | Last indexed: 2026-04-16 ---

Original README: View on GitHub