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  <a href="../libudev/index.html">gudev </a><span style="float:right">systemd 215</span><hr><div class="refentry"><a name="systemd-backlight@.service"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>systemd-backlight@.service, systemd-backlight — Load and save the display backlight brightness at boot and shutdown</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><p><code class="filename">systemd-backlight@.service</code></p><p><code class="filename">/usr/lib/systemd/systemd-backlight</code></p></div><div class="refsect1"><a name="idm214201334672"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description"></a></h2><p><code class="filename">systemd-backlight@.service</code>
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                is a service that restores the display backlight
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                brightness at early boot and saves it at shutdown. On
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                disk, the backlight brightness is stored in
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                <code class="filename">/var/lib/systemd/backlight/</code>.</p></div><div class="refsect1"><a name="idm214202765200"></a><h2 id="Kernel Command Line">Kernel Command Line<a class="headerlink" title="Permalink to this headline" href="#Kernel%20Command%20Line"></a></h2><p><code class="filename">systemd-backlight</code> understands
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                the following kernel command line parameter:</p><div class="variablelist"><dl class="variablelist"><dt id="systemd.restore_state="><span class="term"><code class="varname">systemd.restore_state=</code></span><a class="headerlink" title="Permalink to this term" href="#systemd.restore_state="></a></dt><dd><p>Takes a boolean
                                argument. Defaults to
                                "<code class="literal">1</code>". If
                                "<code class="literal">0</code>", does not restore
                                the backlight settings on boot. However,
                                settings will still be stored on shutdown.
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                                </p></dd></dl></div></div><div class="refsect1"><a name="idm214199022576"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also"></a></h2><p>
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                        <a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>
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