ddcutil

ddcutil is a command line tool that allows control over monitor settings through the DDC/CI protocol. It is primarily used for adjusting brightness, contrast, and other display-related settings. The tool supports a wide range of monitors, including those connected through DisplayPort, HDMI, DVI, and VGA.

Using ddcutil, you can obtain information about the connected monitors, such as model, manufacturer, and supported features. It provides commands to get and set various aspects of the monitor, such as brightness level, contrast, input source, and color settings.

The tool supports scripting or automation by allowing users to specify monitor commands through command line arguments or by running pre-defined scripts. This makes it useful for incorporating monitor adjustments into larger workflows or scripts.

ddcutil can also read and write EDID (Extended Display Identification Data) information from a connected monitor. This data provides detailed information about the monitor's capabilities and is useful for troubleshooting display issues.

It is an open-source tool and actively maintained by its developers, ensuring ongoing support and the addition of new features. The tool is cross-platform compatible and can be used on Linux, macOS, and Windows operating systems.

ddcutil has a straightforward command syntax, making it easy to learn and use. It provides detailed documentation and examples to help users understand the available commands and their usage.

The tool incorporates advanced features like gamma correction, screen pattern testing, and interactive control of monitor OSD (On-Screen Display) menus, making it a versatile tool for adjusting and calibrating monitors.

ddcutil can be used in conjunction with other monitor management tools, such as xrandr or display settings GUIs, to provide a comprehensive solution for monitor control.

Overall, ddcutil is a powerful command line tool that brings fine-grained control over monitor settings, allowing users to customize their display experience to their liking.