PyBrite, an xrandr adjustment tool in Python/Tk

Usage

The top two buttons adjust brightness, the bottom two adjust gamma (contrast).

The idea is to keep this window in the corner of the screen permanently so you can adjust brightness quickly. E.g., you can run PyBrite from your .xinitrc so it starts together with X.

Lowering brightness results in a washed out, low contrast image. Therefore, you should also lower gamma a bit to boost contrast at lower brightness levels.

PC monitor hardware brightness and contrast settings should be medium, i.e. at about 50 to 65%, for the most natural-looking results with PyBrite.

Note that with some older graphics card drivers such as Catalyst, the system will be reset to 100% brightness and gamma 1 after waking up from sleep, so you have to click the PyBrite buttons once for the adjustments to take effect again.

Also note that other tools that adjust gamma via xrandr, such as redshift, will interfere with PyBrite.

Files

Your brightness and gamma settings are saved in "~/.config/pybrite".