--- ATTENTION ---
This page will be no longer updated, just like 4.1 backports, now that 4.2 is out. PowerDevil is now in kdebase module, so from 4.2 on there is no need to download/install it as a separate application. Please use bugs.kde.org for bug reports/feature requests/whatsoever. Thanks for testing and trying PowerDevil in 4.1, we have a rock solid powermanager in 4.2 mostly thanks to you!
PowerDevil is an utility for KDE4 for Laptop Powermanagement. It consists of a Daemon (a KDED module), a KCModule to configure it, and will feature a Plasmoid soon.
With PowerDevil you can set up preferences for lid Closing, Brightness, CPU scaling, Idle time, both when connected to AC and when on Battery. It is built upon Solid, and it's very lightweight and won't overkill your system resources. If you missed KLaptop or KPowersave, this might be the tool you were looking for.
PowerDevil is part of kdebase from 4.2 on. This means it's included in kde core releases and you no longer need to compile it as an external application.
Though, I keep a branch and a tarball updated for people on KDE4.1. Enjoy it!
-- Changelog for the 4.1 branch --
* Another round of critical fixes. Packagers, again, please update as soon as possible.
* Fixes 2 critical bugs in 1.4.0. It's a critical upgrade, packagers, please upgrade as soon as possible
* Yet another backport from trunk
** Now PowerDevil is hosted on KDE FTP **
* Fixed a lot of bugs
* GUI/Feature Improvements, backported everything that was in trunk
* Solved some bugs
* Moved config to KSharedConfig
* Added sensible defaults
* Solved a critical bug that caused kded4 crash on startup
* Backported fix for profile import
* Backported GUI improvements
* Backported various fixes