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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.

• List all compatible displays:

ddcutil detect

• Change the brightness (option 0x10) of display 1 to 50%:

ddcutil --display {1} setvcp {10} {50}

• Increase the contrast (option 0x12) of display 1 by 5%:

ddcutil -d {1} setvcp {12} {+} {5}

• Read the settings of display 1:

ddcutil -d {1} getvcp {ALL}

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