In Red Hat Enterprise Linux 6 DeviceKit-power
assumed the power management functions that were part of HAL
and some of the functions that were part of GNOME Power Manager
in previous releases of Red Hat Enterprise Linux (refer also to Section 2.7, “GNOME Power Manager”
. Red Hat Enterprise Linux 7, DeviceKit-power
was renamed to UPower
provides a daemon, an API, and a set of command-line tools. Each power source on the system is represented as a device, whether it is a physical device or not. For example, a laptop battery and an AC power source are both represented as devices.