NAME | SYNOPSIS | DESCRIPTION | CONFIGURATION DIRECTORIES AND PRECEDENCE | OPTIONS | EXAMPLE: FREEZE | SEE ALSO | COLOPHON

SYSTEMD-SLEEP.CONF(5)        systemd-sleep.conf        SYSTEMD-SLEEP.CONF(5)

NAME         top

       systemd-sleep.conf, sleep.conf.d - Suspend and hibernation
       configuration file

SYNOPSIS         top

       /etc/systemd/sleep.conf

       /etc/systemd/sleep.conf.d/*.conf

       /run/systemd/sleep.conf.d/*.conf

       /usr/lib/systemd/sleep.conf.d/*.conf

DESCRIPTION         top

       systemd supports three general power-saving modes:

       suspend
           a low-power state where execution of the OS is paused, and
           complete power loss might result in lost data, and which is fast
           to enter and exit. This corresponds to suspend, standby, or
           freeze states as understood by the kernel.

       hibernate
           a low-power state where execution of the OS is paused, and
           complete power loss does not result in lost data, and which might
           be slow to enter and exit. This corresponds to the hibernation as
           understood by the kernel.

       hybrid-sleep
           a low-power state where execution of the OS is paused, which
           might be slow to enter, and on complete power loss does not
           result in lost data but might be slower to exit in that case.
           This mode is called suspend-to-both by the kernel.

       Settings in these files determine what strings will be written to
       /sys/power/disk and /sys/power/state by systemd-sleep(8) when
       systemd(1) attempts to suspend or hibernate the machine.

CONFIGURATION DIRECTORIES AND PRECEDENCE         top

       The default configuration is defined during compilation, so a
       configuration file is only needed when it is necessary to deviate
       from those defaults. By default, the configuration file in
       /etc/systemd/ contains commented out entries showing the defaults as
       a guide to the administrator. This file can be edited to create local
       overrides.

       When packages need to customize the configuration, they can install
       configuration snippets in /usr/lib/systemd/*.conf.d/. Files in /etc/
       are reserved for the local administrator, who may use this logic to
       override the configuration files installed by vendor packages. The
       main configuration file is read before any of the configuration
       directories, and has the lowest precedence; entries in a file in any
       configuration directory override entries in the single configuration
       file. Files in the *.conf.d/ configuration subdirectories are sorted
       by their filename in lexicographic order, regardless of which of the
       subdirectories they reside in. If multiple files specify the same
       option, the entry in the file with the lexicographically latest name
       takes precedence. It is recommended to prefix all filenames in those
       subdirectories with a two-digit number and a dash, to simplify the
       ordering of the files.

       To disable a configuration file supplied by the vendor, the
       recommended way is to place a symlink to /dev/null in the
       configuration directory in /etc/, with the same filename as the
       vendor configuration file.

OPTIONS         top

       The following options can be configured in the "[Sleep]" section of
       /etc/systemd/sleep.conf or a sleep.conf.d file:

       SuspendMode=, HibernateMode=, HybridSleepMode=
           The string to be written to /sys/power/disk by, respectively,
           systemd-suspend.service(8), systemd-hibernate.service(8), or
           systemd-hybrid-sleep.service(8). More than one value can be
           specified by separating multiple values with whitespace. They
           will be tried in turn, until one is written without error. If
           neither succeeds, the operation will be aborted.

       SuspendState=, HibernateState=, HybridSleepState=
           The string to be written to /sys/power/state by, respectively,
           systemd-suspend.service(8), systemd-hibernate.service(8), or
           systemd-hybrid-sleep.service(8). More than one value can be
           specified by separating multiple values with whitespace. They
           will be tried in turn, until one is written without error. If
           neither succeeds, the operation will be aborted.

EXAMPLE: FREEZE         top

       Example: to exploit the “freeze” mode added in Linux 3.9, one can use
       systemctl suspend with

           [Sleep]
           SuspendState=freeze

SEE ALSO         top

       systemd-sleep(8), systemd-suspend.service(8),
       systemd-hibernate.service(8), systemd-hybrid-sleep.service(8),
       systemd(1), systemd.directives(7)

COLOPHON         top

       This page is part of the systemd (systemd system and service manager)
       project.  Information about the project can be found at 
       ⟨http://www.freedesktop.org/wiki/Software/systemd⟩.  If you have a bug
       report for this manual page, see 
       ⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩.  This
       page was obtained from the project's upstream Git repository 
       ⟨https://github.com/systemd/systemd.git⟩ on 2016-07-16.  If you dis‐
       cover any rendering problems in this HTML version of the page, or you
       believe there is a better or more up-to-date source for the page, or
       you have corrections or improvements to the information in this
       COLOPHON (which is not part of the original manual page), send a mail
       to man-pages@man7.org

systemd 230                                            SYSTEMD-SLEEP.CONF(5)