j.scruggs@gmail.com Jonathan Scruggs proxy-maint@gentoo.org Proxy Maintainers ddctool primarily uses DDC/CI (Display Data Channel Command Interface) to communicate with monitors implementing MCCS (Monitor Control Command Set) over I2C. Normally, the video driver for the monitor exposes the I2C channel as devices named /dev/i2c-n. Alternatively, there is initial support for monitors (such as Apple displays) that implement MCCS using a USB connection. Adds a udev rule to allow non-root users in the i2c group to access the /dev/i2c-* devices. Otherwise, only root will be able to use ddctool. Adds a udev rule to allow non-root users in the video group to access USB connected monitors. Otherwise, only root will be able to use ddctool.