systemd-sleep.html 6.97 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>systemd-suspend.service</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><style>
    a.headerlink {
      color: #c60f0f;
      font-size: 0.8em;
      padding: 0 4px 0 4px;
      text-decoration: none;
      visibility: hidden;
    }

    a.headerlink:hover {
      background-color: #c60f0f;
      color: white;
    }

    h1:hover > a.headerlink, h2:hover > a.headerlink, h3:hover > a.headerlink, dt:hover > a.headerlink {
      visibility: visible;
    }
  </style><a href="index.html">Index </a>·
  <a href="systemd.directives.html">Directives </a>·
  <a href="../python-systemd/index.html">Python </a>·
  <a href="../libudev/index.html">libudev </a>·
22
  <a href="../libudev/index.html">gudev </a><span style="float:right">systemd 215</span><hr><div class="refentry"><a name="systemd-suspend.service"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>systemd-suspend.service, systemd-hibernate.service, systemd-hybrid-sleep.service, systemd-sleep — System sleep state logic</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><p><code class="filename">systemd-suspend.service</code></p><p><code class="filename">systemd-hibernate.service</code></p><p><code class="filename">systemd-hybrid-sleep.service</code></p><p><code class="filename">/usr/lib/systemd/systemd-sleep</code></p></div><div class="refsect1"><a name="idm214187249136"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description"></a></h2><p><code class="filename">systemd-suspend.service</code> is
23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52
                a system service that is pulled in by
                <code class="filename">suspend.target</code> and is responsible
                for the actual system suspend. Similarly,
                <code class="filename">systemd-hibernate.service</code> is
                pulled in by <code class="filename">hibernate.target</code> to
                execute the actual hibernation. Finally,
                <code class="filename">systemd-hybrid-sleep.service</code> is
                pulled in by <code class="filename">hybrid-sleep.target</code>
                to execute hybrid hibernation with system
                suspend.</p><p>Immediately before entering system suspend
                and/or hibernation
                <code class="filename">systemd-suspend.service</code> (and the
                other mentioned units, respectively) will run all
                executables in
                <code class="filename">/usr/lib/systemd/system-sleep/</code>
                and pass two arguments to them. The first argument
                will be "<code class="literal">pre</code>", the second either
                "<code class="literal">suspend</code>",
                "<code class="literal">hibernate</code>", or
                "<code class="literal">hybrid-sleep</code>" depending on the
                chosen action. Immediately after leaving system
                suspend and/or hibernation the same executables are run,
                but the first argument is now
                "<code class="literal">post</code>". All executables in this
                directory are executed in parallel, and execution of
                the action is not continued until all executables
                have finished.</p><p>Note that scripts or binaries dropped in
                <code class="filename">/usr/lib/systemd/system-sleep/</code>
                are intended for local use only and should be
                considered hacks. If applications want to be notified
53
                of system suspend/hibernation and resume, there are
54 55 56 57 58 59 60 61 62 63 64
                much nicer interfaces available.</p><p>Note that
                <code class="filename">systemd-suspend.service</code>,
                <code class="filename">systemd-hibernate.service</code>, and
                <code class="filename">systemd-hybrid-sleep.service</code>
                should never be executed directly. Instead, trigger
                system sleep states with a command such as
                "<code class="literal">systemctl suspend</code>" or
                similar.</p><p>Internally, this service will echo a string like
                "<code class="literal">mem</code>" into
                <code class="filename">/sys/power/state</code>, to trigger the
                actual system suspend. What exactly is written
65
                where can be configured in the "<code class="literal">[Sleep]</code>"
66 67
                section of <code class="filename">/etc/systemd/sleep.conf</code>.
                See <a href="systemd-sleep.conf.html"><span class="citerefentry"><span class="refentrytitle">systemd-sleep.conf</span>(5)</span></a>.
68
                </p></div><div class="refsect1"><a name="idm214191127792"></a><h2 id="Options">Options<a class="headerlink" title="Permalink to this headline" href="#Options"></a></h2><p><span class="command"><strong>systemd-sleep</strong></span> understands the
69 70
                following commands:</p><div class="variablelist"><dl class="variablelist"><dt id="-h"><span class="term"><code class="option">-h</code>, </span><span class="term"><code class="option">--help</code></span><a class="headerlink" title="Permalink to this term" href="#-h"></a></dt><dd><p><a name="help-text"></a>Print a short help text and exit.
    </p></dd><dt id="--version"><span class="term"><code class="option">--version</code></span><a class="headerlink" title="Permalink to this term" href="#--version"></a></dt><dd><p><a name="version-text"></a>Print a short version string and exit.</p></dd><dt id="suspend"><span class="term"><code class="option">suspend</code>, </span><span class="term"><code class="option">hibernate</code>, </span><span class="term"><code class="option">hybrid-sleep</code></span><a class="headerlink" title="Permalink to this term" href="#suspend"></a></dt><dd><p>Suspend, hibernate, or
71
                                put the system to hybrid sleep.</p></dd></dl></div></div><div class="refsect1"><a name="idm214191121168"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also"></a></h2><p>
72 73 74 75 76 77
                        <a href="systemd-sleep.conf.html"><span class="citerefentry"><span class="refentrytitle">systemd-sleep.conf</span>(5)</span></a>,
                        <a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>,
                        <a href="systemctl.html"><span class="citerefentry"><span class="refentrytitle">systemctl</span>(1)</span></a>,
                        <a href="systemd.special.html"><span class="citerefentry"><span class="refentrytitle">systemd.special</span>(7)</span></a>,
                        <a href="systemd-halt.service.html"><span class="citerefentry"><span class="refentrytitle">systemd-halt.service</span>(8)</span></a>
                </p></div></div></body></html>