sleepd - puts a laptop to sleep during inactivity or on low battery
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]]
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.
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
- 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
- -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.
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
Joey Hess <email@example.com>