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Special Forums News, Links, Events and Announcements Software Releases - RSS News Laptop Mode Tools 1.40 (Default branch)
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Old 04-15-2008
Laptop Mode Tools 1.40 (Default branch)
Laptop Mode Tools allows you to control various power management settings based on AC/battery power state. Among other things, it controls Linux's "Laptop Mode" feature that allows your hard drive to spin down for extended periods. It can also control CPU frequency scaling and screen blanking timeouts (both terminal and X). It supports automatic hibernation when battery is low. License: GNU General Public License (GPL) Changes:
This release adds a fully modular configuration file, support for battery information from sysfs, lid button information from hal, iwlwifi power saving, and optionally using the relatime mount option instead of noatime. Furthermore, the entire implementation was moved from bash to sh for improved performance.Image

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LEARN ABOUT OPENDARWIN

pmset

PMSET(1)						    BSD General Commands Manual 						  PMSET(1)

NAME

     pmset -- modify power management settings

SYNOPSIS

     pmset [-a | -b | -c] [dim minutes] [spindown minutes] [sleep minutes] [womp 1/0] [ring 1/0] [autorestart 1/0] [dps 1/0] [reduce 1/0]
	   [powerbutton 1/0] [lidwake 1/0] [acwake 1/0] [boot]
     pmset -g [disk | live | cap | sched]

DESCRIPTION

     pmset changes and reads power management settings such as idle sleep timing, wake on administrative access, automatic restart on power loss,
     etc.

SETTING

     The -a, -b, -c flags determine whether the settings apply to battery (-b), charger (wall power) (-c), or all (-a).

     Use a minutes argument of 0 to set the idle time to never.

     pmset must be run as root.

     The boot argument tells power management that system bootup is complete. Loginwindow handles this on a normal Mac OS X system.

GETTING

     The -g flag outputs the settings currently in use (same as -g live ).  -g disk will tell you the settings on disk.  -g cap will tell you
     which power management features the machine supports.  -g sched will show scheduled startup/wake and shutdown/sleep events.

ARGUMENTS

     dim - display dim timer (value in minutes)
     spindown - disk spindown timer (value in minutes)
     sleep - system sleep timer (value in minutes)
     womp - wake on ethernet magic packet (value = 0/1)
     ring - wake on modem ring (value = 0/1)
     autorestart - automatic restart on power loss (value = 0/1)
     dps - dynamically change processor speed based on load (value = 0/1)
     reduce - reduce processor speed (value = 0/1)
     powerbutton - sleep the machine when power button is pressed (value = 0/1)
     lidwake - wake the machine when the laptop lid(or clamshell) is opened (value = 0/1)
     acwake - wake the machine when power source (AC/battery) is changed (value = 0/1)

OTHER ARGUMENTS

     These arguments don't directly affect power management settings:
     boot - tell the kernel that system boot is complete

EXAMPLES

     pmset -b dim 5

     pmset -a dim 10 spindown 10 sleep 30 womp 1

     pmset -g live

FILES

     All changes made through pmset are saved in a persistent preferences file (per-system, not per-user) at
     /Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist

     pmset modifies the same file that System Preferences Energy Saver modifies.

Darwin								  August 19, 2002							    Darwin