http://72.14.177.54/SFVLUG/?action=history&feed=atom&title=Low_Power_BootLow Power Boot - Revision history2026-06-15T05:39:16ZRevision history for this page on the wikiMediaWiki 1.15.1http://72.14.177.54/SFVLUG/?title=Low_Power_Boot&diff=1691&oldid=prevDualdflipflop at 06:08, 29 January 20072007-01-29T06:08:41Z<p></p>
<p><b>New page</b></p><div>A simple little snippet to add to rc.local (or your distribution's equivalent of post-SYSV start up script) that will help conserve power when booting up in battery mode.<br />
<br />
# Haxx to lower power usage when booting up on battery.<br />
BATSTATE=`cat /proc/acpi/battery/BAT0/state | grep charging | awk -F: '{print $2}'`<br />
if [ "$BATSTATE" == "discharging" ]; then<br />
<br />
# If we get here, we're on battery.<br />
# Throttle the CPU<br />
echo 4 > /proc/acpi/processor/CPU/throttling<br />
<br />
# Go into laptop mode..<br />
echo 1 > /proc/sys/vm/laptop_mode<br />
<br />
# Remove wireless (and any other unnecessary) driver<br />
for i in ipw2100; do<br />
rmmod ${i}<br />
done<br />
fi</div>Dualdflipflop