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<a href="systemd.directives.html">Directives </a>·
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<a href="../python-systemd/index.html">Python </a>·
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<a href="../libudev/index.html">libudev </a>·
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<a href="../libudev/index.html">gudev </a><span style="float:right">systemd 220</span><hr><div class="refentry"><a name="systemd-sleep.conf"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>systemd-sleep.conf, sleep.conf.d — Suspend and hibernation configuration file</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><p><code class="filename">/etc/systemd/sleep.conf</code></p><p><code class="filename">/etc/systemd/sleep.conf.d/*.conf</code></p><p><code class="filename">/run/systemd/sleep.conf.d/*.conf</code></p><p><code class="filename">/usr/lib/systemd/sleep.conf.d/*.conf</code></p></div><div class="refsect1"><a name="idm140080813273520"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description">¶</a></h2><p><span class="command"><strong>systemd</strong></span> supports three general
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power-saving modes:</p><div class="variablelist"><dl class="variablelist"><dt id="suspend"><span class="term">suspend</span><a class="headerlink" title="Permalink to this term" href="#suspend">¶</a></dt><dd><p>a low-power state
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where execution of the OS is paused,
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and complete power loss might result
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in lost data, and which is fast to
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enter and exit. This corresponds to
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suspend, standby, or freeze states as
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understood by the kernel.
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</p></dd><dt id="hibernate"><span class="term">hibernate</span><a class="headerlink" title="Permalink to this term" href="#hibernate">¶</a></dt><dd><p>a low-power state
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where execution of the OS is paused,
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and complete power loss does not
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result in lost data, and which might
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be slow to enter and exit. This
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corresponds to the hibernation as
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understood by the kernel.
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</p></dd><dt id="hybrid-sleep"><span class="term">hybrid-sleep</span><a class="headerlink" title="Permalink to this term" href="#hybrid-sleep">¶</a></dt><dd><p>a low-power state
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where execution of the OS is paused,
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which might be slow to enter, and on
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complete power loss does not result in
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lost data but might be slower to exit
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in that case. This mode is called
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suspend-to-both by the kernel.
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</p></dd></dl></div><p>Settings in these files determine what strings
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will be written to
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<code class="filename">/sys/power/disk</code> and
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<code class="filename">/sys/power/state</code> by
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<a href="systemd-sleep.html"><span class="citerefentry"><span class="refentrytitle">systemd-sleep</span>(8)</span></a>
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when
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<a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>
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attempts to suspend or hibernate the machine.</p></div><div class="refsection"><a name="main-conf"></a><h2>Configuration Directories and Precedence</h2><p>Default configuration is defined during compilation, so a
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configuration file is only needed when it is necessary to deviate
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from those defaults. By default the configuration file in
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<code class="filename">/etc/systemd/</code> contains commented out entries
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showing the defaults as a guide to the administrator. This file
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can be edited to create local overrides.
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</p><p>When packages need to customize the configuration, they can
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install configuration snippets in
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<code class="filename">/usr/lib/systemd/*.conf.d/</code>. Files in
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<code class="filename">/etc/</code> are reserved for the local
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administrator, who may use this logic to override the
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configuration files installed by vendor packages. The main
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configuration file is read before any of the configuration
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directories, and has the lowest precedence; entries in a file in
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any configuration directory override entries in the single
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configuration file. Files in the
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<code class="filename">*.conf.d/</code> configuration subdirectories
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are sorted by their filename in lexicographic order, regardless of
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which of the subdirectories they reside in. If multiple files
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specify the same option, the entry in the file with the
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lexicographically latest name takes precedence. It is recommended
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to prefix all filenames in those subdirectories with a two-digit
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number and a dash, to simplify the ordering of the files.</p><p>To disable a configuration file supplied by the vendor, the
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recommended way is to place a symlink to
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<code class="filename">/dev/null</code> in the configuration directory in
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<code class="filename">/etc/</code>, with the same filename as the vendor
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configuration file.</p></div><div class="refsect1"><a name="idm140080808363376"></a><h2 id="Options">Options<a class="headerlink" title="Permalink to this headline" href="#Options">¶</a></h2><p>The following options can be configured in the
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"<code class="literal">[Sleep]</code>" section of
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<code class="filename">/etc/systemd/sleep.conf</code> or a
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<code class="filename">sleep.conf.d</code> file:</p><div class="variablelist"><dl class="variablelist"><dt id="SuspendMode="><span class="term"><code class="varname">SuspendMode=</code>, </span><span class="term"><code class="varname">HibernateMode=</code>, </span><span class="term"><code class="varname">HybridSleepMode=</code></span><a class="headerlink" title="Permalink to this term" href="#SuspendMode=">¶</a></dt><dd><p>The string to be written to
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<code class="filename">/sys/power/disk</code> by,
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respectively,
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<a href="systemd-suspend.service.html"><span class="citerefentry"><span class="refentrytitle">systemd-suspend.service</span>(8)</span></a>,
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<a href="systemd-hibernate.service.html"><span class="citerefentry"><span class="refentrytitle">systemd-hibernate.service</span>(8)</span></a>, or
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<a href="systemd-hybrid-sleep.service.html"><span class="citerefentry"><span class="refentrytitle">systemd-hybrid-sleep.service</span>(8)</span></a>.
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More than one value can be specified by separating
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multiple values with whitespace. They will be tried
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in turn, until one is written without error. If
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neither succeeds, the operation will be aborted.
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</p></dd><dt id="SuspendState="><span class="term"><code class="varname">SuspendState=</code>, </span><span class="term"><code class="varname">HibernateState=</code>, </span><span class="term"><code class="varname">HybridSleepState=</code></span><a class="headerlink" title="Permalink to this term" href="#SuspendState=">¶</a></dt><dd><p>The string to be written to
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<code class="filename">/sys/power/state</code> by,
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respectively,
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<a href="systemd-suspend.service.html"><span class="citerefentry"><span class="refentrytitle">systemd-suspend.service</span>(8)</span></a>,
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<a href="systemd-hibernate.service.html"><span class="citerefentry"><span class="refentrytitle">systemd-hibernate.service</span>(8)</span></a>, or
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<a href="systemd-hybrid-sleep.service.html"><span class="citerefentry"><span class="refentrytitle">systemd-hybrid-sleep.service</span>(8)</span></a>.
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More than one value can be specified by separating
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multiple values with whitespace. They will be tried
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in turn, until one is written without error. If
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neither succeeds, the operation will be aborted.
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</p></dd></dl></div></div><div class="refsect1"><a name="idm140080808348496"></a><h2 id="Example: freeze">Example: freeze<a class="headerlink" title="Permalink to this headline" href="#Example:%20freeze">¶</a></h2><p>Example: to exploit the <span class="quote">“<span class="quote">freeze</span>”</span> mode added
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in Linux 3.9, one can use <span class="command"><strong>systemctl suspend</strong></span>
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with
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</p><pre class="programlisting">[Sleep]
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SuspendState=freeze</pre></div><div class="refsect1"><a name="idm140080808345840"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also">¶</a></h2><p>
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<a href="systemd-sleep.html"><span class="citerefentry"><span class="refentrytitle">systemd-sleep</span>(8)</span></a>,
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<a href="systemd-suspend.service.html"><span class="citerefentry"><span class="refentrytitle">systemd-suspend.service</span>(8)</span></a>,
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<a href="systemd-hibernate.service.html"><span class="citerefentry"><span class="refentrytitle">systemd-hibernate.service</span>(8)</span></a>,
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<a href="systemd-hybrid-sleep.service.html"><span class="citerefentry"><span class="refentrytitle">systemd-hybrid-sleep.service</span>(8)</span></a>,
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<a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>,
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<a href="systemd.directives.html"><span class="citerefentry"><span class="refentrytitle">systemd.directives</span>(7)</span></a>
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</p></div></div></body></html>
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