ddcutil

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About

ddcutil is ranked #1 of 25 in monitor control software on Inferse. It runs on API, Linux, Self-hosted. There is a free plan.

Compared on monitor control software

Free plan: Yesddcutil.com
Supported platforms: Linuxddcutil.com
DDC/CI control: Yesddcutil.com
Input switching: Yesddcutil.com
Monitor profiles: Yesddcutil.com
CLI or API access: Yesddcutil.com

Facts

Purpose: ddcutil is a Linux program for managing monitor settings such as brightness, color levels, and input source.ddcutil.com · 3 Oct 2026
Monitor communication: It communicates with monitors using DDC/CI over I²C and also supports monitors that implement MCCS over USB.ddcutil.com · 3 Oct 2026
Monitor controls: Its commands can detect monitors, report capabilities, read and set VCP feature values, and save or restore color related settings.ddcutil.com · 3 Oct 2026
Graphical interface: ddcui is a Qt graphical interface with Summary, Capabilities, and Features views, and its Features view can change modifiable values.ddcutil.com · 3 Oct 2026
Color profiles: The dumpvcp command saves current color related monitor settings to a file, and loadvcp restores them.ddcutil.com · 3 Oct 2026
Integration: The documentation says ddcui can be used alongside DisplayCal’s monitor adjustment phase, and C or C++ programs can access dump/load services through the API.ddcutil.com · 3 Oct 2026
API: The C API is exposed through the shared library libddcutil.so and includes functions for reading and writing VCP values and saving and restoring profile related features.ddcutil.com · 3 Oct 2026
License: ddcutil is released under the GNU General Public License version 2, and its source is hosted on GitHub.ddcutil.com · 3 Oct 2026
Installation: The maker documents prebuilt packages and source builds; its project maintained packages include builds for some Debian, openSUSE, and Ubuntu releases, with Launchpad and Fedora COPR packages also described.ddcutil.com · 3 Oct 2026
Linux distributions: The documentation says ddcutil is included in Arch, Debian, Fedora, Gentoo, Manjaro, openSUSE, and Raspbian.ddcutil.com · 3 Oct 2026
Setup requirements: ddcutil requires the Linux kernel i2c-dev module, and permissions must be granted for non-root users to run it.ddcutil.com · 3 Oct 2026
Support: The maker directs technical support questions, bug reports, and feature requests to the GitHub issue tracker.ddcutil.com · 3 Oct 2026
Display limits: ddcutil does not support laptop displays, which are controlled through a special API rather than I²C.ddcutil.com · 3 Oct 2026
USB limits: For MCCS over USB, table type features are unsupported and the capabilities command synthesizes a response because the specification has no mechanism to query a capabilities string.ddcutil.com · 3 Oct 2026
Maker: The documentation identifies Sanford Rockowitz as ddcutil’s developer and maintainer.ddcutil.com · 3 Oct 2026
Purpose: ddcutil is a Linux program for managing monitor settings such as brightness, color levels, and input source.ddcutil.com · 4 Oct 2026
Monitor communication: It primarily communicates with monitors implementing MCCS through DDC/CI over I²C, and also supports some monitors using USB for MCCS.ddcutil.com · 4 Oct 2026
Settings automation: Its commands can detect monitors, read and set VCP features, and save or restore monitor settings.ddcutil.com · 4 Oct 2026
Color profiles: The dumpvcp and loadvcp commands save and restore color related monitor settings for color profile workflows.ddcutil.com · 4 Oct 2026
Graphical interface: ddcui is a Qt graphical interface with summary, capabilities, and features views, and can change modifiable feature values.ddcutil.com · 4 Oct 2026
Integration: The documentation describes running ddcui alongside DisplayCAL's monitor adjustment phase and using the C or C++ API for dump and load services.ddcutil.com · 4 Oct 2026
C API: The C API is exposed through the shared library libddcutil.so, with installed header files and sample client programs.ddcutil.com · 4 Oct 2026
Platforms: Prebuilt packages are listed for Linux distributions including Arch, Debian, Fedora, Gentoo, Manjaro, openSUSE, and Raspbian, with source builds available when packages are unavailable.ddcutil.com · 4 Oct 2026
License: ddcutil and ddcui are released under the GNU General Public License, version 2.ddcutil.com · 4 Oct 2026
Support: The project directs technical support questions, bug reports, and feature requests to its GitHub issue tracker.ddcutil.com · 4 Oct 2026
Laptop display limit: ddcutil does not support laptop displays because they use a special API rather than I²C.ddcutil.com · 4 Oct 2026
Virtual machine limit: The documentation says ddcutil generally will not run in a virtual machine because virtual video drivers do not implement I²C.ddcutil.com · 4 Oct 2026
Table features: Reading and writing MCCS table type features is implemented but the project says it has not been tested due to lack of a monitor for testing.ddcutil.com · 4 Oct 2026
Intended users: The documentation describes color profile management as a primary use and also presents a C API for programs that need monitor control.ddcutil.com · 4 Oct 2026