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

   1 <?xml version="1.0"?>
   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 <refentry id="systemd-hibernate-resume@.service" conditional='ENABLE_HIBERNATE'>
   8
   9   <refentryinfo>
  10     <title>systemd-hibernate-resume@.service</title>
  11     <productname>systemd</productname>
  12   </refentryinfo>
  13
  14   <refmeta>
  15     <refentrytitle>systemd-hibernate-resume@.service</refentrytitle>
  16     <manvolnum>8</manvolnum>
  17   </refmeta>
  18
  19   <refnamediv>
  20     <refname>systemd-hibernate-resume@.service</refname>
  21     <refname>systemd-hibernate-resume</refname>
  22     <refpurpose>Resume from hibernation</refpurpose>
  23   </refnamediv>
  24
  25   <refsynopsisdiv>
  26     <para><filename>systemd-hibernate-resume@.service</filename></para>
  27     <para><filename>/usr/lib/systemd/systemd-hibernate-resume</filename></para>
  28   </refsynopsisdiv>
  29
  30   <refsect1>
  31     <title>Description</title>
  32
  33     <para><filename>systemd-hibernate-resume@.service</filename>
  34     initiates the resume from hibernation. It is instantiated with the
  35     device to resume from as the template argument.</para>
  36
  37     <para><filename>systemd-hibernate-resume</filename> only supports
  38     the in-kernel hibernation implementation, known as
  39     <ulink url="https://www.kernel.org/doc/Documentation/power/swsusp.txt">swsusp</ulink>.
  40     Internally, it works by writing the major:minor of specified
  41     device node to <filename>/sys/power/resume</filename>.</para>
  42
  43     <para>Failing to initiate a resume is not an error condition. It
  44     may mean that there was no resume image (e. g. if the system has
  45     been simply powered off and not hibernated). In such case, the
  46     boot is ordinarily continued.</para>
  47   </refsect1>
  48
  49   <refsect1>
  50     <title>See Also</title>
  51     <para>
  52       <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
  53       <citerefentry><refentrytitle>systemd-hibernate-resume-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>
  54     </para>
  55   </refsect1>
  56
  57 </refentry>