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-rw-r--r--man/systemd-backlight@.service.xml20
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diff --git a/man/systemd-backlight@.service.xml b/man/systemd-backlight@.service.xml
index 6d26d4b2ed..672fd05eb3 100644
--- a/man/systemd-backlight@.service.xml
+++ b/man/systemd-backlight@.service.xml
@@ -62,6 +62,26 @@
</refsect1>
<refsect1>
+ <title>Kernel Command Line</title>
+
+ <para><filename>systemd-backlight</filename> understands
+ the following kernel command line parameter:</para>
+
+ <variablelist class='kernel-commandline-options'>
+ <varlistentry>
+ <term><varname>systemd.restore_state=</varname></term>
+
+ <listitem><para>Takes a boolean
+ argument. Defaults to
+ <literal>1</literal>. If
+ <literal>0</literal>, does not restore
+ the backlight settings on boot. However,
+ settings will still be stored on shutdown.
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>