DDCcontrol is a software used to control monitor parameters, like brightness, contrast, RGB color levels and others.
DDCcontrol consists of:
ddccontrol- command-line tool for monitor parameters control
gddccontrol- GUI tool for monitor parameters control
The most convenient way to install DDCcontrol is to use packages from official distribution repositories.
Manual installation is more complicated, but contains latest version of software and more monitor profiles.
Installation from official packages
gddccontrol can be installed from official distribution repositories with following command:
- on Ubuntu:
sudo apt install ddccontrol gddccontrol ddccontrol-db i2c-tools
- on Fedora:
sudo dnf install ddccontrol ddccontrol-gtk
- on openSUSE:
sudo zypper in ddccontrol
Installation from sources
Install build dependencies:
- on Ubuntu:
sudo apt install intltool i2c-tools libxml2-dev libpci-dev libgtk2.0-dev
- on others:
Clone, build and install built version:
git clone https://github.com/ddccontrol/ddccontrol.git cd ddccontrol ./autogen.sh ./configure --prefix=/usr/ --sysconfdir=/etc --libexecdir=/usr/lib make sudo make install
Monitor database is required for proper functionality. See for ddccontrol-db installation.
From GUI using gddccontrol
gddccontrol is a graphical utility for monitor configuration. It is called Monitor Settings in list of applications.
Following configuration is needed to allow non-root user to use
sudo adduser $USER i2c sudo /bin/sh -c 'echo i2c-dev >> /etc/modules'
Utility can launched directly from commandline:
From command line using ddccontrol
ddccontrol allows monitor configuration directly from commandline. To probe I2C devices to find monitor buses use:
sudo ddccontrol -p
To read value of control
0x10 (brightness on VESA compliant monitors) for device
sudo ddccontrol -r 0x10 dev:/dev/i2c-4
To set value of control
0x10 (brightness on VESA compliant monitors) to
75 for device
sudo ddccontrol -r 0x10 -w 75 dev:/dev/i2c-4
ddccontrol -h for more information.
The project is licensed under
GNU General Public License v2.0 license. See COPYING for details.