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+<?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 seperating
+ multiple values with commas. They will be tried
+ in turn, until one is written without error. If
+ neither suceeds, 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 seperating
+ multiple values with commas. They will be tried
+ in turn, until one is written without error. If
+ neither suceeds, 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>