Ever wanted to have a graphical button to reboot your beloved device? Well, today I’ll show you how to add one to your powerkey menu!

Note: the tips we go through involve editing a low-level system file and imply that readers know what they are doing.

Adding the Reboot button:

First, we would want to go root:

  sudo gainroot

Next, let’s modify the sudoers file to allow us running reboot:

echo “user ALL = NOPASSWD: /sbin/reboot” > /etc/sudoers.d/reboot.sudoers

Update sudoers:

update-sudoers

Now, we would want to create a d-bus service.

[editor] /usr/share/dbus-1/services/reboot.service

Replace [editor] with whatever editor you prefer, for example, leafpad.

Paste the following into the file:

  [D-BUS Service]
  Name=com.misc.reboot
  Exec=/usr/bin/sudo reboot

Save the file and exit the editor. Change current directory:

cd /etc/systemui

Open up systemui.xml file in your preferred editor:

[editor] systemui.xml

Paste the following anywhere between the <powerkeymenu> and </powerkeymenu> tags:

<menuitem priority=”750″ name=”Reboot”>
   <icon>general_refresh</icon>
   <callback service=”com.misc.reboot” path=”/com/misc/reboot” interface=”com.misc.reboot” method=”reboot” bus=”session”   autostart=”true”>
   <argument type=”boolean”>true</argument>
  </callback>
</menuitem>

Note: some of you may notice that a reboot entry is already defined in systemui.xml. However, it utilizes osso-powerup-shutdown and preforms a very brutal shutdown. Rebooting with sudo reboot will gently shutdown all software and sync your filesystems, which is safer. Let’s just say that there  was probably a reason that the default entry was commented out.

Save the file, exit the editor and reboot your N900.

reboot

Enjoy your newly added Reboot button which will perform a safe reboot once pressed!

—

Source: Talk Maemo