On Fri, Jul 20, 2012 at 10:04:59AM +0700, Erich Dollansky wrote: > Hi, > > I forget yesterday to share these two scripts: > > http://www.alogreentechnologies.com/freebsd/checkbattery > > checks the battery status of an X220 and shuts the machine down when the battery falls to 2% or below. > > The status is checked every minute. > > It calls the following script to shut the machine down: > > http://www.alogreentechnologies.com/freebsd/poweroff > > You must run the first script as root to enable it to power the machine off at the end. > > I found that the battery life of my machine was higher using a simple window manager like blackbox compared to things like GNOME or KDE. This might depend on the usage pattern. > > Erich Is it necessary to poll? Usually devd generates an event when the battery status and/or percentage changes. Just read the events from /var/run/devd.pipe.
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