/usr/sbin/laptop_mode - apply laptop mode settings
/usr/sbin/laptop_mode [ cmd ] [ force ]
This manual page documents briefly the /usr/sbin/laptop_mode command.
laptop_mode is a program that applies the settings given in the
/etc/laptop-mode/laptop-mode.conf configuration file. The primary use
is to control the laptop mode feature included in Linux kernels with
versions 2.6.6 and higher, and 2.4.23 and higher. This feature
increases battery life by letting your hard drive spin down. This is
achieved by grouping disk write activity into "chunks" that are spaced
at larger intervals than they normally would be. In addition to
supporting the Linux kernel’s laptop mode feature,
/usr/sbin/laptop_mode also supports various power saving modules which
are configured through configuration files in the /etc/laptop-
It is not recommended to call /usr/sbin/laptop_mode directly to start
or stop laptop mode, except in hardware event handlers. To apply new
configuration settings from laptop-mode.conf, call the laptop-mode
service init script with the reload parameter.
Specify force as the second parameter to force laptop_mode to re-apply
a state even if the computer is already in that state. These are the
values that are allowed for cmd :
auto Enable or disable laptop mode based on the current power
state. Note that this will not do anything if the laptop-mode
service has not been started!
status Display a status report about everything that laptop_mode
This manual page was written by Bart Samwel (email@example.com) for the
Debian system (but may be used by others). Permission is granted to
copy, distribute and/or modify this document under the terms of the GNU
General Public License, Version 2 any later version published by the
Free Software Foundation.
On Debian systems, the complete text of the GNU General Public License
can be found in /usr/share/common-licenses/GPL.