ddcutil-service is D-Bus service wrapper for libddcutil which implements the VESA DDC Monitor Control Command Set. In general, most things that can be controlled using a monitor's on-screen display can be controlled by this service.

vdu_controls is a virtual control panel for externally connected VDU's (visual display units, displays/monitors). Controls are included for backlight brightness, and contrast. vdu_controls uses the ddcutil command line utility to interact with external displays via VESA Display Data Channel (DDC) Virtual Control Panel (VCP) standards.

vdu_controls is a virtual control panel for externally connected VDUs (visual display units). Controls are included for backlight brightness, and contrast. vdu_controls uses the ddcutil command line utility to interact with external displays via VESA Display Data Channel (DDC) Virtual Control Panel (VCP) standards.