ddcutil Documentation

Introduction

Command Overview

Command Examples

Command Examples
ddcutil detect example
ddcutil getvcp example
ddcutil vcpinfo example
ddcutil capabilities example

Command Detail

Command Detail
Primary Commands
Primary Commands
- detect
- capabilities
- getvcp
- setvcp
- vcpinfo
- dumpvcp & loadvcp
- scs
Secondary Commands
Command Options
Command Options
Shared Library Options

Specific Facilities

Table Type Features
USB Connected Monitors
Color Management
User Defined Features
Configuration File

Installation and Configuration

Installation and Configuration
Post-Installation Checklist
Install ddcutil From Prebuilt Packages
Building From Source
Shared Library Configuration
Notes for Linux Distribution Maintainers
Configuration and Installation Diagnostics
I2C Device Permissions
I2C Device Permissions Using Group i2c
USB Device Permissions
Kernel Module Configuration
Special Nvidia Driver Settings
Setting Nvidia Driver Options Using X11
Notes on driver amdgpu
Virtual Machines
Raspberry Pi
Notes on Specific Monitors
Notes on Particular Configurations
USB-C DisplayPort Alt Mode

Shared Library

C API
Shared Library Release Notes
Shared Library Changes for Release 0.9.0
Shared Library Changes for Release 0.9.3
Shared Library Changes for Release 0.9.5
Shared Library Changes for Release 0.9.6
Shared Library Changes for Release 0.9.8
Shared Library Changes for Release 0.9.9
Shared Library Changes for Release 1.0.0
Shared Library Changes for Release 1.1.0
Shared Library Changes for Release 1.2.0
Shared Library Changes for Release 1.3.0
Shared Library Changes for Release 1.4.0
Shared Library Changes for Release 2.0.0
Shared Library Changes for Release 2.1.0
Shared Library Changes for Release 2.1.2
Shared Library Changes for Release 2.1.3
Shared Library Changes for Release 2.1.4
Shared Library Changes for Release 2.2.0

Background

Monitor Control Command Set
DDC vs I2C
DDC and DisplayPort
References
Developer Documentation

Additional Topics

Articles about ddcutil
Frequently Asked Questions
Technical Support
Comparison with ddccontrol
DDC Null Message
Reverse Engineering Proprietary DDC Extensions
Acknowledgements
Technical Notes
Driver Bug Reports of Interest

Release History

Releases
Release Notes
Prior_Release Notes
Announcement History

ddcui

Overview
Command Line Options
Building ddcui
ddcui Release Notes
ddcui Frequently Asked Questions

Related Resources

Monitor Specifications
Windows Utilities for Monitor Control
Macintosh Utlities for Monitor Control
Applications using ddcutil

ddcutil Documentation

Command Examples
Command Examples

Command Examples

ddcutil detect
ddcutil capabilities
ddcutil getvcp
ddcutil vcpinfo

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