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1 | <?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*--> | |
2 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" | |
3 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> | |
4 | ||
5 | <!-- | |
6 | SPDX-License-Identifier: LGPL-2.1+ | |
7 | ||
8 | Copyright © 2013 Zbigniew Jędrzejewski-Szmek | |
9 | --> | |
10 | ||
11 | <refentry id="systemd-sleep.conf" | |
12 | xmlns:xi="http://www.w3.org/2001/XInclude"> | |
13 | <refentryinfo> | |
14 | <title>systemd-sleep.conf</title> | |
15 | <productname>systemd</productname> | |
16 | ||
17 | <authorgroup> | |
18 | <author> | |
19 | <contrib>Developer</contrib> | |
20 | <firstname>Zbigniew</firstname> | |
21 | <surname>Jędrzejewski-Szmek</surname> | |
22 | <email>zbyszek@in.waw.pl</email> | |
23 | </author> | |
24 | </authorgroup> | |
25 | </refentryinfo> | |
26 | ||
27 | <refmeta> | |
28 | <refentrytitle>systemd-sleep.conf</refentrytitle> | |
29 | <manvolnum>5</manvolnum> | |
30 | </refmeta> | |
31 | ||
32 | <refnamediv> | |
33 | <refname>systemd-sleep.conf</refname> | |
34 | <refname>sleep.conf.d</refname> | |
35 | <refpurpose>Suspend and hibernation configuration file</refpurpose> | |
36 | </refnamediv> | |
37 | ||
38 | <refsynopsisdiv> | |
39 | <para><filename>/etc/systemd/sleep.conf</filename></para> | |
40 | <para><filename>/etc/systemd/sleep.conf.d/*.conf</filename></para> | |
41 | <para><filename>/run/systemd/sleep.conf.d/*.conf</filename></para> | |
42 | <para><filename>/usr/lib/systemd/sleep.conf.d/*.conf</filename></para> | |
43 | </refsynopsisdiv> | |
44 | ||
45 | <refsect1> | |
46 | <title>Description</title> | |
47 | ||
48 | <para><command>systemd</command> supports four general | |
49 | power-saving modes:</para> | |
50 | ||
51 | <variablelist> | |
52 | <varlistentry> | |
53 | <term>suspend</term> | |
54 | ||
55 | <listitem><para>a low-power state | |
56 | where execution of the OS is paused, | |
57 | and complete power loss might result | |
58 | in lost data, and which is fast to | |
59 | enter and exit. This corresponds to | |
60 | suspend, standby, or freeze states as | |
61 | understood by the kernel. | |
62 | </para></listitem> | |
63 | </varlistentry> | |
64 | ||
65 | <varlistentry> | |
66 | <term>hibernate</term> | |
67 | ||
68 | <listitem><para>a low-power state | |
69 | where execution of the OS is paused, | |
70 | and complete power loss does not | |
71 | result in lost data, and which might | |
72 | be slow to enter and exit. This | |
73 | corresponds to the hibernation as | |
74 | understood by the kernel. | |
75 | </para></listitem> | |
76 | </varlistentry> | |
77 | ||
78 | <varlistentry> | |
79 | <term>hybrid-sleep</term> | |
80 | ||
81 | <listitem><para>a low-power state | |
82 | where execution of the OS is paused, | |
83 | which might be slow to enter, and on | |
84 | complete power loss does not result in | |
85 | lost data but might be slower to exit | |
86 | in that case. This mode is called | |
87 | suspend-to-both by the kernel. | |
88 | </para></listitem> | |
89 | </varlistentry> | |
90 | ||
91 | <varlistentry> | |
92 | <term>suspend-then-hibernate</term> | |
93 | ||
94 | <listitem><para>A low power state where the system is initially suspended | |
95 | (the state is stored in RAM). If not interrupted within the delay specified by | |
96 | <command>HibernateDelaySec=</command>, the system will be woken using an RTC | |
97 | alarm and hibernated (the state is then stored on disk). | |
98 | </para></listitem> | |
99 | </varlistentry> | |
100 | ||
101 | </variablelist> | |
102 | ||
103 | <para>Settings in these files determine what strings | |
104 | will be written to | |
105 | <filename>/sys/power/disk</filename> and | |
106 | <filename>/sys/power/state</filename> by | |
107 | <citerefentry><refentrytitle>systemd-sleep</refentrytitle><manvolnum>8</manvolnum></citerefentry> | |
108 | when | |
109 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry> | |
110 | attempts to suspend or hibernate the machine. | |
111 | See | |
112 | <citerefentry><refentrytitle>systemd.syntax</refentrytitle><manvolnum>5</manvolnum></citerefentry> | |
113 | for a general description of the syntax.</para> | |
114 | </refsect1> | |
115 | ||
116 | <xi:include href="standard-conf.xml" xpointer="main-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>, | |
137 | <citerefentry><refentrytitle>systemd-hybrid-sleep.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, or | |
138 | <citerefentry><refentrytitle>systemd-suspend-then-hibernate.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>. | |
139 | More than one value can be specified by separating | |
140 | multiple values with whitespace. They will be tried | |
141 | in turn, until one is written without error. If | |
142 | neither succeeds, the operation will be aborted. | |
143 | </para></listitem> | |
144 | </varlistentry> | |
145 | ||
146 | <varlistentry> | |
147 | <term><varname>SuspendState=</varname></term> | |
148 | <term><varname>HibernateState=</varname></term> | |
149 | <term><varname>HybridSleepState=</varname></term> | |
150 | ||
151 | <listitem><para>The string to be written to | |
152 | <filename>/sys/power/state</filename> by, | |
153 | respectively, | |
154 | <citerefentry><refentrytitle>systemd-suspend.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
155 | <citerefentry><refentrytitle>systemd-hibernate.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
156 | <citerefentry><refentrytitle>systemd-hybrid-sleep.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, or | |
157 | <citerefentry><refentrytitle>systemd-suspend-then-hibernate.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>. | |
158 | More than one value can be specified by separating | |
159 | multiple values with whitespace. They will be tried | |
160 | in turn, until one is written without error. If | |
161 | neither succeeds, the operation will be aborted. | |
162 | </para></listitem> | |
163 | </varlistentry> | |
164 | <varlistentry> | |
165 | <term><varname>HibernateDelaySec=</varname></term> | |
166 | ||
167 | <listitem><para>The amount of time in seconds | |
168 | that will pass before the system is automatically | |
169 | put into hibernate when using | |
170 | <citerefentry><refentrytitle>systemd-suspend-then-hibernate.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>. | |
171 | </para></listitem> | |
172 | </varlistentry> | |
173 | </variablelist> | |
174 | </refsect1> | |
175 | ||
176 | <refsect1> | |
177 | <title>Example: freeze</title> | |
178 | ||
179 | <para>Example: to exploit the <quote>freeze</quote> mode added | |
180 | in Linux 3.9, one can use <command>systemctl suspend</command> | |
181 | with | |
182 | <programlisting>[Sleep] | |
183 | SuspendState=freeze</programlisting></para> | |
184 | </refsect1> | |
185 | ||
186 | <refsect1> | |
187 | <title>See Also</title> | |
188 | <para> | |
189 | <citerefentry><refentrytitle>systemd-sleep</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
190 | <citerefentry><refentrytitle>systemd-suspend.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
191 | <citerefentry><refentrytitle>systemd-hibernate.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
192 | <citerefentry><refentrytitle>systemd-hybrid-sleep.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
193 | <citerefentry><refentrytitle>systemd-suspend-then-hibernate.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
194 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
195 | <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry> | |
196 | </para> | |
197 | </refsect1> | |
198 | ||
199 | </refentry> |