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Dir : ~/usr/share/help/C/system-admin-guide/

Edit File: power-dim-screen.page

<credit type="author copyright">
 <name>Matthias Clasen</name>
 <email>matthias.clasen@gmail.com</email>
 <years>2012</years>
 </credit>
 <credit type="editor">
 <name>Jana Svarova</name>
 <email>jana.svarova@gmail.com</email>
 <years>2013</years>
 </credit>
 <credit type="editor">
 <name>Petr Kovar</name>
 <email>pknbe@volny.cz</email>
 <years>2014</years>
 </credit>
 <credit type="editor">
 <name>Ekaterina Gerasimova</name>
 <email>kittykat3756@gmail.com</email>
 <years>2014</years>
 </credit>

<desc>Make the screen dim after a specific amount of time when the user is
 idle.</desc>
 </info>

<title>Dim screen when user is idle</title>

You can make the computer screen dim after the computer has been idle (not
 used) for some period of time.

<steps>
 <title>Dim screen on idle computer</title>
 <include href="dconf-snippets.xml"
 xpointer="xpointer(/*/*[@xml:id='dconf-profile-user'])"
 xmlns="http://www.w3.org/2001/XInclude"/>
 <include href="dconf-snippets.xml"
 xpointer="xpointer(/*/*[@xml:id='dconf-profile-user-dir'])"
 xmlns="http://www.w3.org/2001/XInclude"/>
 <item>
 Create the key file
 <file>/etc/dconf/db/local.d/00-power</file> to provide
 information for the <sys>local</sys> database.
 <listing>
 <title><file>/etc/dconf/db/local.d/00-power</file></title>
<code>
# Specify the dconf path
[org/gnome/settings-daemon/plugins/power]

# Enable screen dimming
idle-dim=true

# Set brightness after dimming
idle-brightness=30
</code>
 </listing>
 </item>
 <item>
 Create the key file
 <file>/etc/dconf/db/local.d/00-session</file> to provide
 information for the <sys>local</sys> database.
 <listing>
 <title><file>/etc/dconf/db/local.d/00-session</file></title>
<code>
# Specify the dconf path
[org/gnome/desktop/session]

# The number of seconds of inactivity before the session is considered idle
idle-delay=uint32 300
</code>
 </listing>
 You must include the <code>uint32</code> along with the
 integer key values as shown.
 </item>
 <item>
 To prevent the user from overriding these settings, create the file
 <file>/etc/dconf/db/local.d/locks/power-saving</file> with the following
 content:
 <listing>
 <title><file>/etc/dconf/db/local.db/locks/power-saving</file></title>
<code>
# Lock screen dimming and idle timeout
/org/gnome/settings-daemon/plugins/power/idle-dim
/org/gnome/settings-daemon/plugins/power/idle-brightness
/org/gnome/desktop/session/idle-delay
</code>
 </listing>
 If you want to let the user change these settings, skip this step.
 </item>
 <include href="dconf-snippets.xml"
 xpointer="xpointer(/*/*[@xml:id='dconf-update'])"
 xmlns="http://www.w3.org/2001/XInclude"/>
 <include href="dconf-snippets.xml"
 xpointer="xpointer(/*/*[@xml:id='dconf-logoutin'])"
 xmlns="http://www.w3.org/2001/XInclude"/>
 </steps>

</page>