sleepd (8)

sleepd [-s command] [-d command] [-u n] [-U n] [-I] [-i n] [-E] [-e filename] [-a] [-l n] [-w] [-n] [-v] [-c n] [-b n] [-A] [-H] [-N [device] [-r n] [-t n]]

sleepd is a daemon to force laptops to go to sleep after some period of inactivity. This is useful if your laptop does not automatically go to sleep when you aren't using it, and, like me, you often forget to shut it off. It is also capable of suspending a laptop when its battery gets very low.

sleepd can detect activity in several ways. The default is to poll both event devices and interrupts to detect when your laptop is in use due to keyboard or mouse activity. It defaults to polling /dev/input/event*. You may specify a list of device files to poll instead, or use options to enable other means of checking for activity (network activity, utmp, or load average). After a configurable amount of time with no activity, sleepd runs a program to put the laptop to sleep.

-h, --help

Show summary of options.

-n, --nodaemon

Don't fork to background; run in forground.

-v, --verbose

Output status messages.

-u, --unused

Number of seconds the laptop can remain idle before being put to sleep. Defaults to 600 seconds (10 minutes). Set to 0 to disable any sleeping due to idleness.

-U, --ac-unused

If set, controls the number of seconds the laptop can remain idle before being put to sleep when running on AC power. If not set, the laptop will not sleep when it's on AC power.

-e, --event

Adds an event file to the list that is watched. Using this switch disables polling all files in /dev/input/event*.

-E, --no-events

This switch disables event device polling.

-l, --load

If set, a load average higher than this number will prevent the computer from sleeping If not set, the computer will ignore the load average.

-w

If set, sleepd will also check idletime based on utmp. This will prevent the system from sleeping while remote connections are active. It uses the time limit from -u.

-i, --irq

Adds an irq to the list that is watched. Using this switch disables automatic detection of keyboard and mouse irqs unless -a is specified as well.

-I, --no-irq

This switch disables interrupt polling.

-a, --auto

Automatically detect and watch mouse and keyboard irqs.

-s, --sleep-command

Command to run to put the laptop to sleep. Defaults to "apm -s" for systems with APM and "pm-suspend" for systems with ACPI.

-b, --battery

If this option is specified, the daemon will put the laptop to sleep if the percentage of battery charge drops below the specified number and the system is off AC power. This is useful for some laptops which don't handle this themselves. It supports using APM, ACPI, and HAL for querying battery status.

-d, --hibernate-command

A command to run instead of the regular sleep command when the battery is low. This can be useful if you want to make the system go to sleep when it's not active, but suspend to disk if the battery is low. If not set, the sleep command is used.

-N, --netdev

Monitor a network interface for activity based on packet count. eth0 is the default. This option may be used more than once with different network interfaces.

-t, --tx-min

Set a baseline transmit raffic rate in packets per second for network monitoring. Requires -N.

-r, --rx-min

Set a baseline receive traffic rate in packets per second for network monitoring. Requires -N.

-A, --and

Only go to sleep if all specified conditions are met. For example, only sleep if idle and if the battery is low.

-c, --check-period

Number of seconds between check on system status. Defaults to 10 seconds, which should be fine generally.

-H, --force-upower

Force UPower to be used instead of ACPI or other methods to query battery status.

sleepctl(1)

http://kitenet.net/~joey/code/sleepd/

Interrupt monitoring cannot always detect keyboard and mouse. If the keyboard or mouse interrupt is shared (as is common with usb devices), other devices on the same interrupt can keep the system awake. Use event device polling instead.

Joey Hess <[email protected]>