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AUTOSUSPEND.CONF(5) autosuspend AUTOSUSPEND.CONF(5)

NAME

autosuspend.conf - autosuspend config file Documentation

SYNOPSIS

/etc/autosuspend.conf

GENERAL CONFIGURATION

Configures the autosuspend daemon.

Configuration file

Syntax

The autosuspend configuration file uses INI syntax and needs to be processable by the Python configparser <https://docs.python.org/3/library/configparser.html> module.

A simple configuration file could look like:

[general]
interval = 30
idle_time = 900
suspend_cmd = /usr/bin/systemctl suspend
wakeup_cmd = echo {timestamp:.0f} > /sys/class/rtc/rtc0/wakealarm
notify_cmd_wakeup = su myuser -c notify-send -a autosuspend 'Suspending the system. Wake up at {iso}'
notify_cmd_no_wakeup = su myuser -c notify-send -a autosuspend 'Suspending the system.'
lock_file = /var/lock/autosuspend.lock
lock_timeout = 30
[check.Ping]
enabled = false
hosts = 192.168.0.7
[check.RemoteUsers]
class = Users
enabled = true
name = .*
terminal = .*
host = [0-9].*
[wakeup.File]
enabled = True
path = /var/run/autosuspend/wakeup


The configuration file consists of a [general] section, which specifies general processing options, and multiple sections of the format [check.*] and [wakeup.*]. These sections describe the activity and wake up checks to execute.

General configuration

The [general] section contains options controlling the overall behavior of the autosuspend daemon. These are:

The time to wait after executing all checks in seconds.

The required amount of time in seconds with no detected activity before the host will be suspended. Default: 300 seconds

The minimal amount of time in seconds the system has to sleep for actually triggering suspension. If a scheduled wake up results in an effective time below this value, the system will not sleep. Default: 1200 seconds

Wake up the system this amount of seconds earlier than the time that was determined for an event that requires the system to be up. This value adds a safety margin for the time a the wake up effectively takes. Default: 30 seconds

The command to execute in case the host shall be suspended. This line can contain additional command line arguments to the command to execute.

The command to execute for scheduling a wake up of the system. The given string is processed using Python's str.format() and a format argument called timestamp encodes the UTC timestamp of the planned wake up time (float). Additionally iso can be used to acquire the timestamp in ISO 8601 format.

A command to execute before the system is going to suspend for the purpose of notifying interested clients. This command is only called in case a wake up is scheduled. The given string is processed using Python's str.format() and a format argument called timestamp encodes the UTC timestamp of the planned wake up time (float). Additionally iso can be used to acquire the timestamp in ISO 8601 format. If empty or not specified, no command will be called.

A command to execute before the system is going to suspend for the purpose of notifying interested clients. This command is only called in case NO wake up is scheduled. Hence, no string formatting options are available. If empty or not specified, no command will be called.

Location of a file that indicates to autosuspend that the computer has suspended since the last time checks were executed. This file is usually created by a systemd <https://www.freedesktop.org/wiki/Software/systemd/> service. Thus, changing the location also requires adapting the respective service. Refer to systemd-integration for further details.

Location of a file that is used to synchronize the continuously running daemon and the systemd callback.

Timeout in seconds used when trying to acquire the lock. This should be longer than the maximum run time of all configured checks. In the worst cases, suspending the system is delayed by this amount of time because presuspend hook has to wait before all checks have passed.

Activity check configuration

For each activity check to execute, a section with the name format [check.*] needs to be created. Each check has a name and an executing class which implements the behavior. The fraction of the section name check. determines the name, and in case no class option is given inside the section, also the class which implements the check. In case the class option is specified, the name is completely user-defined and the same check can even be instantiated multiple times with differing names.

For each check, these generic options can be specified:

Name of the class implementing the check. If the name does not contain a dot (.), this is assumed to be one of the checks provided by autosuspend internally. Otherwise, this can be used to pull in third-party checks. If this option is not specified, the section name must represent a valid internal check class.

Needs to be true for a check to actually execute. false is assumed if not specified.

Furthermore, each check might have custom options.

Wake up check configuration

Wake up checks uses the same configuration logic as the previously described activity checks. However, the configuration file sections start with wakeup. instead of check..

For options of individual checks, please refer to available-checks and available-wakeups.

AVAILABLE ACTIVITY CHECK

Available activity checks

The following checks for activity are currently implemented. Each of the is described with its available configuration options and required optional dependencies.

ActiveCalendarEvent

Checks an online iCalendar <https://icalendar.readthedocs.io> file for events that are currently running. If so, this indicates activity and prevents suspending the system. Thus, a calendar can be provided with times at which the system should not go to sleep. If this calendar resides on an online service like a groupware it might even be possible to invite the system.

Options

The URL to query for the iCalendar file

Timeout for executed requests in seconds. Default: 5.

Optional user name to use for authenticating at a server requiring authentication. If used, also a password must be provided.

Optional password to use for authenticating at a server requiring authentication. If used, also a user name must be provided.

Requirements


ActiveConnection

Checks whether there is currently a client connected to a TCP server at certain ports. Can be used to e.g. block suspending the system in case SSH users are connected or a web server is used by clients.

Options

list of comma-separated port numbers

Requirements

ExternalCommand

Executes an arbitrary command. In case this command returns 0, the system is assumed to be active.

The command is executed as is using shell execution. Beware of malicious commands in obtained configuration files.

Options

The command to execute including all arguments

Requirements

Kodi

Checks whether an instance of Kodi <https://kodi.tv/> is currently playing.

Options

Base URL of the JSON RPC API of the Kodi instance, default: http://localhost:8080/jsonrpc

Request timeout in seconds, default: 5

Optional user name to use for authenticating at a server requiring authentication. If used, also a password must be provided.

Optional password to use for authenticating at a server requiring authentication. If used, also a user name must be provided.

Also suspend the system when media playback is paused instead of only suspending when playback is stopped. Default: false

Requirements

•
requests <https://pypi.python.org/pypi/requests>

KodiIdleTime

Checks whether there has been interaction with the Kodi user interface recently. This prevents suspending the system in case someone is currently browsing collections etc. This check is redundant to XIdleTime on systems using an X server, but might be necessary in case Kodi is used standalone. It does not replace the Kodi check, as the idle time is not updated when media is playing.

Options

Marks the system active in case a user interaction has appeared within the this amount of seconds until now. Default: 120

Base URL of the JSON RPC API of the Kodi instance, default: http://localhost:8080/jsonrpc

Request timeout in seconds, default: 5

Optional user name to use for authenticating at a server requiring authentication. If used, also a password must be provided.

Optional password to use for authenticating at a server requiring authentication. If used, also a user name must be provided.

Requirements

•
requests <https://pypi.python.org/pypi/requests>

Load

Checks whether the system load 5 <https://en.wikipedia.org/wiki/Load_(computing)> is below a certain value.

Options

a float for the maximum allowed load value, default: 2.5

Requirements

LogindSessionsIdle

Prevents suspending in case IdleHint for one of the running sessions logind <https://www.freedesktop.org/wiki/Software/systemd/logind/> sessions is set to no. Support for setting this hint currently varies greatly across display managers, screen lockers etc. Thus, check exactly whether the hint is set on your system via loginctl show-session.

Options

A comma-separated list of sessions types to inspect for activity. The check ignores sessions of other types. Default: tty, x11, wayland

A comma-separated list of session states to inspect. For instance, lingering sessions used for background programs might not be of interest. Default: active, online

Requirements

•
dbus-python <https://cgit.freedesktop.org/dbus/dbus-python/>

Mpd

Checks whether an instance of MPD <http://www.musicpd.org/> is currently playing music.

Options

Host containing the MPD daemon, default: localhost

Port to connect to the MPD daemon, default: 6600

Request timeout in seconds, default: 5

Requirements

•
python-mpd2 <https://pypi.python.org/pypi/python-mpd2>

NetworkBandwidth

Checks whether more network bandwidth is currently being used than specified. A set of specified interfaces is checked in this regard, each of the individually, based on the average bandwidth on that interface. This average is based on the global checking interval specified in the configuration file via the interval option.

Options

Comma-separated list of network interfaces to check

If the average sending bandwidth of one of the specified interfaces is above this threshold, then activity is detected. Specified in bytes/s, default: 100

If the average receive bandwidth of one of the specified interfaces is above this threshold, then activity is detected. Specified in bytes/s, default: 100

Requirements

Ping

Checks whether one or more hosts answer to ICMP requests.

Options

Comma-separated list of host names or IPs.

Requirements

Processes

If currently running processes match an expression, the suspend will be blocked. You might use this to hinder the system from suspending when for example your rsync runs.

Options

list of comma-separated process names to check for

Requirements

Smb

Any active Samba connection will block suspend.

Options

executable needs to be present.

Requirements

Users

Checks whether a user currently logged in at the system matches several criteria. All provided criteria must match to indicate activity on the host.

Options

All regular expressions are applied against the full string. Capturing substrings needs to be explicitly enabled using wildcard matching.

A regular expression specifying which users to capture, default: .*.

A regular expression specifying the terminal on which the user needs to be logged in, default: .*.

A regular expression specifying the host from which a user needs to be logged in, default: .*.

Requirements

XIdleTime

Checks whether all active local X displays have been idle for a sufficiently long time. Determining which X11 sessions currently exist on a running system is a harder problem than one might expect. Sometimes, the server runs as root, sometimes under the real user, and many other configuration variants exist. Thus, multiple sources for active X serer instances are implemented for this check, each of them having different requirements and limitations. They can be changed using the provided configuration option.

Options

required idle time in seconds

The method to use for acquiring running X sessions. Valid options are sockets and logind. The default is sockets.
Uses the X server sockets files found in /tmp/.X11-unix. This method requires that all X server instances run with user permissions and not as root.
Uses logind <https://www.freedesktop.org/wiki/Software/systemd/logind/> to obtain the running X server instances. This does not support manually started servers.


A regular expression to match against the process names executed by each X session owner. In case the use has a running process that matches this expression, the X idle time is ignored and the check continues as if there was no activity. This can be useful in case of processes which inevitably tinker with the idle time.

Do not check sessions of users matching this regular expressions.

Requirements

•
dbus-python <https://cgit.freedesktop.org/dbus/dbus-python/> for the logind method

XPath

A generic check which queries a configured URL and expects the reply to contain XML data. The returned XML document is checked against a configured XPath <https://www.w3.org/TR/xpath/> expression and in case the expression matches, the system is assumed to be active.

Some common applications and their respective configuration are:

https://tvheadend.org/>
The required URL for tvheadend <https://tvheadend.org/> is (if running on the same host):

http://127.0.0.1:9981/status.xml


In case you want to prevent suspending in case there are active subscriptions or recordings, use the following XPath:

/currentload/subscriptions[number(.) > 0] | /currentload/recordings/recording/start


If you have a permantently running subscriber like Kodi <https://kodi.tv/>, increase the 0 to 1.

https://www.plex.tv/>
For Plex <https://www.plex.tv/>, use the following URL (if running on the same host):

http://127.0.0.1:32400/status/sessions/?X-Plex-Token={TOKEN}


Where acquiring the token is documented here <https://support.plex.tv/articles/204059436-finding-an-authentication-token-x-plex-token/>.

If suspending should be prevented in case of any activity, this simple XPath <https://www.w3.org/TR/xpath/> expression will suffice:

/MediaContainer[@size > 2]



Options

The URL to query for the XML reply.

The XPath query to execute. In case it returns a result, the system is assumed to be active.

Timeout for executed requests in seconds. Default: 5.

Optional user name to use for authenticating at a server requiring authentication. If used, also a password must be provided.

Optional password to use for authenticating at a server requiring authentication. If used, also a user name must be provided.

Requirements


AVAILABLE WAKEUP CHECK

Available wake up checks

The following checks for wake up times are currently implemented. Each of the checks is described with its available configuration options and required optional dependencies.

Calendar

Determines next wake up time from an iCalendar <https://icalendar.readthedocs.io> file. The next event that starts after the current time is chosen as the next wake up time.

Remember that updates to the calendar can only be reflected in case the system currently running. Changes to the calendar made while the system is sleeping will obviously not trigger an earlier wake up.

Options

The URL to query for the XML reply.

Optional user name to use for authenticating at a server requiring authentication. If used, also a password must be provided.

Optional password to use for authenticating at a server requiring authentication. If used, also a user name must be provided.

The XPath query to execute. Must always return number strings or nothing.

Timeout for executed requests in seconds. Default: 5.

Requirements


Command

Determines the wake up time by calling an external command The command always has to succeed. If something is printed on stdout by the command, this has to be the next wake up time in UTC seconds.

The command is executed as is using shell execution. Beware of malicious commands in obtained configuration files.

Options

The command to execute including all arguments

File

Determines the wake up time by reading a file from a configured location. The file has to contains the planned wake up time as an int or float in seconds UTC.

Options

path of the file to read in case it is present

Periodic

Always schedules a wake up at a specified delta from now on. Can be used to let the system wake up every once in a while, for instance, to refresh the calendar used in the Calendar check.

Options

A string indicating in which unit the delta is specified. Valid options are: microseconds, milliseconds, seconds, minutes, hours, days, weeks.

The value of the delta as an int.

XPath

A generic check which queries a configured URL and expects the reply to contain XML data. The returned XML document is parsed using a configured XPath <https://www.w3.org/TR/xpath/> expression that has to return timestamps UTC (as strings, not elements). These are interpreted as the wake up times. In case multiple entries exist, the soonest one is used.

Options

The URL to query for the XML reply.

The XPath query to execute. Must always return number strings or nothing.

Timeout for executed requests in seconds. Default: 5.

Optional user name to use for authenticating at a server requiring authentication. If used, also a password must be provided.

Optional password to use for authenticating at a server requiring authentication. If used, also a user name must be provided.

XPathDelta

Comparable to XPath, but expects that the returned results represent the wake up time as a delta to the current time in a configurable unit.

This check can for instance be used for tvheadend <https://tvheadend.org/> with the following expression:

//recording/next/text()


Options

The URL to query for the XML reply.

Optional user name to use for authenticating at a server requiring authentication. If used, also a password must be provided.

Optional password to use for authenticating at a server requiring authentication. If used, also a user name must be provided.

The XPath query to execute. Must always return number strings or nothing.

Timeout for executed requests in seconds. Default: 5.

A string indicating in which unit the delta is specified. Valid options are: microseconds, milliseconds, seconds, minutes, hours, days, weeks. Default: minutes

AUTHOR

Johannes Wienke

COPYRIGHT

2020, Johannes Wienke

January 22, 2020 3.0