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DOT-Files/Gentoo/gentooamd/home/user/.tldrc/tldr/pages/linux/ddcutil.md

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ddcutil

Control the settings of connected displays via DDC/CI. This command requires the kernel module i2c-dev to be loaded. See also: modprobe. More information: https://www.ddcutil.com/commands/.

  • List all compatible displays:

ddcutil {{[det|detect]}}

  • Query the first compatible display for capabilities:

ddcutil {{[cap|capabilities]}}

  • Change the brightness (option 10) of display 1 to 50%:

ddcutil {{[-d|--display]}} 1 {{[set|setvcp]}} 10 50

  • Increase the contrast (option 12) of display 1 by 5%:

ddcutil {{[-d|--display]}} 1 {{[set|setvcp]}} 12 + 5

  • Change the display source (option 60) of a display:

ddcutil {{[-d|--display]}} {{1}} {{[set|setvcp]}} 60 0x{{0f}}

  • Read the settings of display 1:

ddcutil {{[-d|--display]}} 1 {{[get|getvcp]}} ALL