snippetbashTip

ddcutil — Control the settings of connected displays via DDC/CI. This command requires the kernel module `i2c-

Submitted by: @import:tldr-pages·Mar 2, 2026·

Viewed 0 times

theddcutilcommandconnectedclicontrolsettingsdisplays

linux

Problem

How to use the ddcutil command: 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/>.

Solution

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

Code Snippets

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}}

Context

tldr-pages: linux/ddcutil

Revisions (0)

No revisions yet.