man/systemd-hibernate-resume@.service.xml

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   2 <!--*-nxml-*-->
   3 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
   4 <!--
   5   SPDX-License-Identifier: LGPL-2.1+
   6
   7   Copyright © 2014 Ivan Shapovalov
   8 -->
   9 <refentry id="systemd-hibernate-resume@.service" conditional='ENABLE_HIBERNATE'>
  10
  11   <refentryinfo>
  12     <title>systemd-hibernate-resume@.service</title>
  13     <productname>systemd</productname>
  14   </refentryinfo>
  15
  16   <refmeta>
  17     <refentrytitle>systemd-hibernate-resume@.service</refentrytitle>
  18     <manvolnum>8</manvolnum>
  19   </refmeta>
  20
  21   <refnamediv>
  22     <refname>systemd-hibernate-resume@.service</refname>
  23     <refname>systemd-hibernate-resume</refname>
  24     <refpurpose>Resume from hibernation</refpurpose>
  25   </refnamediv>
  26
  27   <refsynopsisdiv>
  28     <para><filename>systemd-hibernate-resume@.service</filename></para>
  29     <para><filename>/usr/lib/systemd/systemd-hibernate-resume</filename></para>
  30   </refsynopsisdiv>
  31
  32   <refsect1>
  33     <title>Description</title>
  34
  35     <para><filename>systemd-hibernate-resume@.service</filename>
  36     initiates the resume from hibernation. It is instantiated with the
  37     device to resume from as the template argument.</para>
  38
  39     <para><filename>systemd-hibernate-resume</filename> only supports
  40     the in-kernel hibernation implementation, known as
  41     <ulink url="https://www.kernel.org/doc/Documentation/power/swsusp.txt">swsusp</ulink>.
  42     Internally, it works by writing the major:minor of specified
  43     device node to <filename>/sys/power/resume</filename>.</para>
  44
  45     <para>Failing to initiate a resume is not an error condition. It
  46     may mean that there was no resume image (e. g. if the system has
  47     been simply powered off and not hibernated). In such case, the
  48     boot is ordinarily continued.</para>
  49   </refsect1>
  50
  51   <refsect1>
  52     <title>See Also</title>
  53     <para>
  54       <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
  55       <citerefentry><refentrytitle>systemd-hibernate-resume-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>
  56     </para>
  57   </refsect1>
  58
  59 </refentry>