DOKK / manpages / debian 12 / ddcui / ddcui.1.en
ddcui(1) General Commands Manual ddcui(1)

ddcui - GUI for ddcutil

ddcui [options]

ddcui provides a graphical user interface to a monitor's Virtual Control Panel (VCP). It uses the DDC/CI protocol on an I2C bus connected to the monitor. Normally, the video driver for the monitor exposes one or more I2C buses as devices named /dev/i2c-n.

Virtual Control Panel features are defined in the Monitor Control Command Set (MCCS). Monitors implement some subset of these features. Each feature is identified using a single byte. For example, feature x10 is the brightness control.

Initial feature set to show. The most important are MCCS - all features defined in MCCS, MANUFACTURER - features in the manufacturer reserved range xe0..xff, COLOR - color related features. For a complete list, use the --help option. Unless --custom-feature-set is specified, the default is MCCS.

Explicitly specify the features to be shown. Features in the feature code list are specified as 2 byte hex numbers, with or without leading "x" or trailing "h". To specify more than one feature, separate the feature codes by commas or blanks, and enclose the entire list in quotation marks. For example:
--custom-feature-set "10 x12 14h"
    

Restrict features to those in the capabilities string. Applies when the feature set is MCCS, COLOR, or MANUFACTURER.

Always include features found in the capabilities string. Applies when the feature set is MCCS.

Display unsupported features in the feature set. Normally unsupported features are not shown.

Source of values shown in the drop down menu for simple Non-Continuous features.

Always use values from latest MCCS version

Model name as specified in the monitor's EDID and shown on the toolbar.

List available Qt styles

Select the Qt style to use

Report version information

Get command line help.

These correspond to ddcutil command line options of the same name.

Report DDC protocol and data errors to the terminal.

Trace all functions in a trace group. May be specified more than once.

Trace all traceable functions in a file. May be specified more than once.

Trace a single function. May be specified more than once.

Prefix trace messages with timestamp

Prefix trace messages with thread id

Normally returns 0, returns 1 if failure.

Using the --help option is regarded as success.

ddcutil(1)

The project homepage: http://www.ddcutil.com

http://www.ddcutil.com/ddcui_main
http:0.ddcutil.com/ddcui_options

Sanford Rockowitz (rockowitz at minsoft dot com)
Copyright 2019-2020 Sanford Rockowitz

13 June 2020