UPower
 | |
 GNOME Power Manager notification about switch to battery power | |
| Developer(s) | David Zeuthen, Richard Hughes a.o. (freedesktop.org) |
|---|---|
| Initial release | 2008 |
| Stable release | 1.90.4[1] 
/ 8 April 2024 |
| Repository | |
| Written in | C |
| Operating system | Linux |
| License | GPL (free software) |
| Website | upower |
UPower (previously DeviceKit-power) is a piece of
PolicyKit restricts access to the UPower functionality for initiating hibernate mode or shutting down the operating system (freedesktop.upower.policy).[4]
The command-line client program upower can be used to query and monitor information about the power supply devices in the system. Graphical user interfaces to the functionality of UPower include the GNOME Power Manager and the Xfce Power Manager.[5]
UPower is a product of the cross-desktop freedesktop.org project. As free software it is published with its source code under the terms of version 2 or later of the GNU General Public License (GPL).
It was conceived as a replacement for the corresponding features of the deprecated HAL. In 2008, David Zeuthen started a comprehensive rewrite of HAL. This resulted in a set of separate services under the new name "DeviceKit".[6] In 2010 the included DeviceKit-power was renamed. UPower was first introduced and established as a standard in GNOME.[7] In January 2011 the desktop environment Xfce followed (version 4.8).
Sources
- ^ "Release v1.90.4".
- ISBN 9783827330253
- ^ Oliver Diedrich (The H Open), 11 February 2013: D-Bus is coming to the Linux Kernel
- ISBN 9781936280230
- ^ "Xfce:xfce4-power-manager:start [Xfce Docs]".
- ^ David Zeuthen (7 May 2008), freedesktop.org (ed.), "Update on DeviceKit", HAL-Mailingliste (in German)
- ^ Thorsten Leemhuis (The H Open), 7 August 2012: Comment: Desktop Fragmentation[permanent dead link]
External links
Wikimedia Commons has media related to UPower.
- Official website
- Red Hat, Inc.: Red Hat Enterprise Linux 7 – Power Management Guide, sections 2.6.: UPower, 2.7.: GNOME Power Manager