ddcutil
ddcutil communicates with monitors implementing MCCS (Monitor Control Command Set). Normally, communication is performed using the DDC/CI protocol on the I2C bus. Alternatively, communication can be performed over USB as per the USB Monitor Control Class Specification.
Latest reviews
4
Works for me on Linux Mint 22.1 Cinnamon X11 to adjust brightness of external monitor via keyboard brightness keys. Followed this guy's tutorial: 'https://ubuntuhandbook.org/index.php/2023/02/brightness-external-monitor-ubuntu/'. Only beef I have is it takes a sec to run each key press so it's pretty laggy compared to a built-in hardware brightness adjustment. But gets the job done.
