man/systemd-sleep.conf.xml

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   8   Copyright 2013 Zbigniew Jędrzejewski-Szmek
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  23
  24 <refentry id="systemd-sleep.conf"
  25           xmlns:xi="http://www.w3.org/2001/XInclude">
  26   <refentryinfo>
  27     <title>systemd-sleep.conf</title>
  28     <productname>systemd</productname>
  29
  30     <authorgroup>
  31       <author>
  32         <contrib>Developer</contrib>
  33         <firstname>Zbigniew</firstname>
  34         <surname>Jędrzejewski-Szmek</surname>
  35         <email>zbyszek@in.waw.pl</email>
  36       </author>
  37     </authorgroup>
  38   </refentryinfo>
  39
  40   <refmeta>
  41     <refentrytitle>systemd-sleep.conf</refentrytitle>
  42     <manvolnum>5</manvolnum>
  43   </refmeta>
  44
  45   <refnamediv>
  46     <refname>systemd-sleep.conf</refname>
  47     <refname>sleep.conf.d</refname>
  48     <refpurpose>Suspend and hibernation configuration file</refpurpose>
  49   </refnamediv>
  50
  51   <refsynopsisdiv>
  52     <para><filename>/etc/systemd/sleep.conf</filename></para>
  53     <para><filename>/etc/systemd/sleep.conf.d/*.conf</filename></para>
  54     <para><filename>/run/systemd/sleep.conf.d/*.conf</filename></para>
  55     <para><filename>/usr/lib/systemd/sleep.conf.d/*.conf</filename></para>
  56   </refsynopsisdiv>
  57
  58   <refsect1>
  59     <title>Description</title>
  60
  61     <para><command>systemd</command> supports three general
  62     power-saving modes:</para>
  63
  64     <variablelist>
  65       <varlistentry>
  66         <term>suspend</term>
  67
  68         <listitem><para>a low-power state
  69         where execution of the OS is paused,
  70         and complete power loss might result
  71         in lost data, and which is fast to
  72         enter and exit. This corresponds to
  73         suspend, standby, or freeze states as
  74         understood by the kernel.
  75         </para></listitem>
  76       </varlistentry>
  77
  78       <varlistentry>
  79         <term>hibernate</term>
  80
  81         <listitem><para>a low-power state
  82         where execution of the OS is paused,
  83         and complete power loss does not
  84         result in lost data, and which might
  85         be slow to enter and exit. This
  86         corresponds to the hibernation as
  87         understood by the kernel.
  88         </para></listitem>
  89       </varlistentry>
  90
  91       <varlistentry>
  92         <term>hybrid-sleep</term>
  93
  94         <listitem><para>a low-power state
  95         where execution of the OS is paused,
  96         which might be slow to enter, and on
  97         complete power loss does not result in
  98         lost data but might be slower to exit
  99         in that case. This mode is called
 100         suspend-to-both by the kernel.
 101         </para></listitem>
 102       </varlistentry>
 103     </variablelist>
 104
 105     <para>Settings in these files determine what strings
 106     will be written to
 107     <filename>/sys/power/disk</filename> and
 108     <filename>/sys/power/state</filename> by
 109     <citerefentry><refentrytitle>systemd-sleep</refentrytitle><manvolnum>8</manvolnum></citerefentry>
 110     when
 111     <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
 112     attempts to suspend or hibernate the machine.</para>
 113   </refsect1>
 114
 115   <xi:include href="standard-conf.xml" xpointer="main-conf" />
 116
 117   <refsect1>
 118     <title>Options</title>
 119
 120     <para>The following options can be configured in the
 121     <literal>[Sleep]</literal> section of
 122     <filename>/etc/systemd/sleep.conf</filename> or a
 123     <filename>sleep.conf.d</filename> file:</para>
 124
 125     <variablelist class='systemd-directives'>
 126       <varlistentry>
 127         <term><varname>SuspendMode=</varname></term>
 128         <term><varname>HibernateMode=</varname></term>
 129         <term><varname>HybridSleepMode=</varname></term>
 130
 131         <listitem><para>The string to be written to
 132         <filename>/sys/power/disk</filename> by,
 133         respectively,
 134         <citerefentry><refentrytitle>systemd-suspend.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 135         <citerefentry><refentrytitle>systemd-hibernate.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, or
 136         <citerefentry><refentrytitle>systemd-hybrid-sleep.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
 137         More than one value can be specified by separating
 138         multiple values with whitespace. They will be tried
 139         in turn, until one is written without error. If
 140         neither succeeds, the operation will be aborted.
 141         </para></listitem>
 142       </varlistentry>
 143
 144       <varlistentry>
 145         <term><varname>SuspendState=</varname></term>
 146         <term><varname>HibernateState=</varname></term>
 147         <term><varname>HybridSleepState=</varname></term>
 148
 149         <listitem><para>The string to be written to
 150         <filename>/sys/power/state</filename> by,
 151         respectively,
 152         <citerefentry><refentrytitle>systemd-suspend.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 153         <citerefentry><refentrytitle>systemd-hibernate.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, or
 154         <citerefentry><refentrytitle>systemd-hybrid-sleep.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
 155         More than one value can be specified by separating
 156         multiple values with whitespace. They will be tried
 157         in turn, until one is written without error. If
 158         neither succeeds, the operation will be aborted.
 159         </para></listitem>
 160       </varlistentry>
 161     </variablelist>
 162   </refsect1>
 163
 164   <refsect1>
 165     <title>Example: freeze</title>
 166
 167     <para>Example: to exploit the <quote>freeze</quote> mode added
 168     in Linux 3.9, one can use <command>systemctl suspend</command>
 169     with
 170     <programlisting>[Sleep]
 171 SuspendState=freeze</programlisting></para>
 172   </refsect1>
 173
 174   <refsect1>
 175     <title>See Also</title>
 176     <para>
 177       <citerefentry><refentrytitle>systemd-sleep</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 178       <citerefentry><refentrytitle>systemd-suspend.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 179       <citerefentry><refentrytitle>systemd-hibernate.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 180       <citerefentry><refentrytitle>systemd-hybrid-sleep.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 181       <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 182       <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>
 183     </para>
 184   </refsect1>
 185
 186 </refentry>