#ddc #mccs #vcp #ddccontrol #ddcutil

app ddcset

DDC/CI display control application

5 releases

0.0.5 Feb 16, 2023
0.0.4 Dec 4, 2022
0.0.3 Mar 30, 2018
0.0.2 Mar 29, 2018
0.0.1 Mar 29, 2018

#3 in #ddc

21 downloads per month

MIT license

385 lines


release-badge license-badge

ddcset is an application for controlling connected monitors over DDC/CI.


Currently supported platforms:

  • Linux
  • Windows
    • Windows Monitor Configuration API provides limited DDC/CI support on all GPUs.
    • NVIDIA NVAPI provides improved DDC/CI support for supported GPUs.


Binaries are available on some platforms. Cargo can also be used to install directly from source:

cargo install --force ddcset

NVIDIA drivers on Linux

The NVIDIA Linux drivers have had broken DDC/CI support for years now. There are workarounds but it seems that it is not currently possible to use DDC/CI over DisplayPort.


~143K SLoC