npm

ddcutil

Control monitor brightness, contrast, and color via DDC/CI protocol

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About

Control monitor settings using DDC/CI and USB

Commands

ddcutil

Examples

List all detected monitors and their capabilities$ ddcutil detect
Get current brightness level on monitor 1$ ddcutil getvcp 10 --display 1
Set brightness to 75% on monitor 1$ ddcutil setvcp 10 75 --display 1