By default, all monitors will be controlled.To control the monitor brightness (of the screen, not the bias lighting), see:

On Windows, you can just double click on console.py or gui.pyw (gui.pyw is the same as gui.py, but it won't open a command prompt window on Windows).To get a graphical interface, do: sudo.

Enter help for help / command reference.

To get a command line interface, do: sudo.

Note: if you use Command Prompt instead of PowerShell, run pip install instead of py -m pip install.

Install the Python HID library by opening Windows PowerShell and running:.

When installing, make sure to check the checkbox for the 'Add Python to PATH' option on the bottom of the initial screen, and then click the 'Disable path length limit' button at the end of the installation.

The HIDAPI dll is included in this repository, so you don't have to install it separately.

For the GUI, install the Python PyQt5 package:.

Install the Python HID package, for your user and root:.

On macOS only, install Python 3 from /downloads.

sudo pacman -S hidapi python-hid python-pyqt5.

This requires Python 3, the Python HID package, and the HIDAPI library as dependencies. If you are able to get this program to successfully work under untested situations, please open an issue and report your success so that this document can be updated. But I only have a single 27GN950 and don't have an Apple computer.

See the lib27gn950.py file for details and documentation. This project also provides a library that other applications can use to control the supported monitors.

it's lightweight, fast, and has a good UI.

it supports controlling multiple monitors.

This program lets you control the bias lighting LEDs on the LG 27GN950, 38GN950, and 38GL950G monitors without needing to use the official LG software.

Lg ultragear control center