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="confd" />
 116   <xi:include href="standard-conf.xml" xpointer="conf" />
 117
 118   <refsect1>
 119     <title>Options</title>
 120
 121     <para>The following options can be configured in the
 122     <literal>[Sleep]</literal> section of
 123     <filename>/etc/systemd/sleep.conf</filename> or a
 124     <filename>sleep.conf.d</filename> file:</para>
 125
 126     <variablelist class='systemd-directives'>
 127       <varlistentry>
 128         <term><varname>SuspendMode=</varname></term>
 129         <term><varname>HibernateMode=</varname></term>
 130         <term><varname>HybridSleepMode=</varname></term>
 131
 132         <listitem><para>The string to be written to
 133         <filename>/sys/power/disk</filename> by,
 134         respectively,
 135         <citerefentry><refentrytitle>systemd-suspend.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 136         <citerefentry><refentrytitle>systemd-hibernate.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, or
 137         <citerefentry><refentrytitle>systemd-hybrid-sleep.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
 138         More than one value can be specified by separating
 139         multiple values with whitespace. They will be tried
 140         in turn, until one is written without error. If
 141         neither succeeds, the operation will be aborted.
 142         </para></listitem>
 143       </varlistentry>
 144
 145       <varlistentry>
 146         <term><varname>SuspendState=</varname></term>
 147         <term><varname>HibernateState=</varname></term>
 148         <term><varname>HybridSleepState=</varname></term>
 149
 150         <listitem><para>The string to be written to
 151         <filename>/sys/power/state</filename> by,
 152         respectively,
 153         <citerefentry><refentrytitle>systemd-suspend.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 154         <citerefentry><refentrytitle>systemd-hibernate.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, or
 155         <citerefentry><refentrytitle>systemd-hybrid-sleep.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
 156         More than one value can be specified by separating
 157         multiple values with whitespace. They will be tried
 158         in turn, until one is written without error. If
 159         neither succeeds, the operation will be aborted.
 160         </para></listitem>
 161       </varlistentry>
 162     </variablelist>
 163   </refsect1>
 164
 165   <refsect1>
 166     <title>Example: freeze</title>
 167
 168     <para>Example: to exploit the <quote>freeze</quote> mode added
 169     in Linux 3.9, one can use <command>systemctl suspend</command>
 170     with
 171     <programlisting>[Sleep]
 172 SuspendState=freeze</programlisting></para>
 173   </refsect1>
 174
 175   <refsect1>
 176     <title>See Also</title>
 177     <para>
 178       <citerefentry><refentrytitle>systemd-sleep</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 179       <citerefentry><refentrytitle>systemd-suspend.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 180       <citerefentry><refentrytitle>systemd-hibernate.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 181       <citerefentry><refentrytitle>systemd-hybrid-sleep.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 182       <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 183       <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>
 184     </para>
 185   </refsect1>
 186
 187 </refentry>