<?xml version='1.0'?> <!--*-nxml-*--> <?xml-stylesheet type="text/xsl" href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"?> <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> <!-- This file is part of systemd. Copyright 2013 Zbigniew Jędrzejewski-Szmek systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. --> <refentry id="systemd-sleep.conf"> <refentryinfo> <title>systemd-sleep.conf</title> <productname>systemd</productname> <authorgroup> <author> <contrib>Developer</contrib> <firstname>Zbigniew</firstname> <surname>Jędrzejewski-Szmek</surname> <email>zbyszek@in.waw.pl</email> </author> </authorgroup> </refentryinfo> <refmeta> <refentrytitle>systemd-sleep.conf</refentrytitle> <manvolnum>5</manvolnum> </refmeta> <refnamediv> <refname>systemd-sleep.conf</refname> <refpurpose>Suspend and hibernation configuration file</refpurpose> </refnamediv> <refsynopsisdiv> <para><filename>/etc/systemd/sleep.conf</filename></para> </refsynopsisdiv> <refsect1> <title>Description</title> <para><command>systemd</command> supports three general power-saving modes:</para> <variablelist> <varlistentry> <term>suspend</term> <listitem><para>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. </para></listitem> </varlistentry> <varlistentry> <term>hibernate</term> <listitem><para>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. </para></listitem> </varlistentry> <varlistentry> <term>hybrid-sleep</term> <listitem><para>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. </para></listitem> </varlistentry> </variablelist> <para>Settings in this file determine what strings will be written to <filename>/sys/power/disk</filename> and <filename>/sys/power/state</filename> by <citerefentry><refentrytitle>systemd-sleep</refentrytitle><manvolnum>8</manvolnum></citerefentry> when <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry> attempts to suspend or hibernate the machine.</para> </refsect1> <refsect1> <title>Options</title> <para>The following options can be configured in the <literal>[Sleep]</literal> section of <filename>/etc/systemd/sleep.conf</filename>:</para> <variablelist class='systemd-directives'> <varlistentry> <term><varname>SuspendMode=</varname></term> <term><varname>HibernateMode=</varname></term> <term><varname>HybridSleepMode=</varname></term> <listitem><para>The string to be written to <filename>/sys/power/disk</filename> by, respectively, <citerefentry><refentrytitle>systemd-suspend.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, <citerefentry><refentrytitle>systemd-hibernate.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, or <citerefentry><refentrytitle>systemd-hybrid-sleep.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>. 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. </para></listitem> </varlistentry> <varlistentry> <term><varname>SuspendState=</varname></term> <term><varname>HibernateState=</varname></term> <term><varname>HybridSleepState=</varname></term> <listitem><para>The string to be written to <filename>/sys/power/state</filename> by, respectively, <citerefentry><refentrytitle>systemd-suspend.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, <citerefentry><refentrytitle>systemd-hibernate.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, or <citerefentry><refentrytitle>systemd-hybrid-sleep.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>. 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. </para></listitem> </varlistentry> </variablelist> </refsect1> <refsect1> <title>Example: freeze</title> <para>Example: to exploit the <quote>freeze</quote> mode added in Linux 3.9, one can use <command>systemctl suspend</command> with <programlisting>[Sleep] SuspendState=freeze</programlisting></para> </refsect1> <refsect1> <title>See Also</title> <para> <citerefentry><refentrytitle>systemd-sleep</refentrytitle><manvolnum>8</manvolnum></citerefentry>, <citerefentry><refentrytitle>systemd-suspend.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, <citerefentry><refentrytitle>systemd-hibernate.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, <citerefentry><refentrytitle>systemd-hybrid-sleep.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry> </para> </refsect1> </refentry>