powersaved(8)
NAME
powersaved - supports APM and ACPI: three battery states, proper standby/suspend, cpu frequency scaling and other power management tasks
SYNOPSIS
powersaved [ options ]
DESCRIPTION
Daemon that waits for apm and acpi events or for socket connections
from an authorized user. It may also generate self defined events
while polling the hardware (battery, cpu, temperature).
OPTIONS
- -v Set the debug level, allowed values: 0-31
- 1 Error
2 Warning
4 Diag
8 Info
16 Debug e.g. Error + Warning: 1 + 2 -> 3 (sum up wanted lev - els like in chmod)
- -x Set the path to executables that will be executed depending on
- the events configuration file (default: /usr/lib/powersave/scripts)
- -y Set the path to executables that will be executed for internal
- events and by the event scripts (default: /usr/lib/powersave)
- -d Daemonize process
- -f FILE
- The file powersave daemon gets informed about ACPI events. Default is /proc/acpi/event. You may want to provide the socket file of the acpid to access ACPI events. This allows accessing ACPI events for multiple services/applications.
- -c DIR Sets the configuration directory (default /etc/powersave). Gen
- eral configuration files are:
battery
common
cpufreq
disk
events
sleep
thermal - -s DIR Sets the directory for Scheme configuration files (new ones
- could be added and switched to, default is /etc/powersave):
scheme_performance (default scheme when working on AC power) scheme_powersave (default scheme when working on battery
- power)
- -n Disables CPU frequency scaling. In case this feature may cause
- trouble.
- -h Print syntax
NOTICE
Because some features are still experimental they are not enabled by
default (e.g. standby/suspend, ACPI battery notification). You also may
want to tune the daemon for your needs. On SUSE systems, you can use
the YaST power management module. On other systems, you can have a look
in the config files for extended configuration (see below).
User management is now solved through DBus. A configuration file
should be placed into the DBus config directory (e.g. /etc/dbus-1/system.d) called powersaved.conf. Use this file to manage which users are
allowed to contact the powersave service.
There may be weird bugs which result from ACPI BIOS errors of machines.
Please check the /proc/acpi directory and dmesg output for any acpi
errors. Contact your hardware vendor and install the newest BIOS
update.
BUGS
Standby and Suspend to RAM using ACPI is still experimental and may
fail on some machines. See /var/log/susp*.log and /var/log/standby.log
(and resume) log files to figure out which module/HW component could
cause the fail.
AUTHOR
powersave daemon has been written by Thomas Renninger <mail@renninger.de>
Inspiration and code parts partly come from the acpid, apmd and cpuspeed (former cpufreqd implemented by Carl Thompson) packages. Many
thanks to all developers who helped to create this software.
SEE ALSO
- powersave(8) /etc/powersave/* /usr/share/doc/powersaved http://powersave.sourceforge.net