Replace settings.ini in .config/gtk-3.0/settings.ini

To use settings.ini in Live-CD folder.
sudo apt-get install breeze arc-theme

Add xfce4-power-manager.xml in .config/xfce4/xfconf/xfce-perchannel-xml/
Check that this line is there...
<property name="show-tray-icon" type="bool" value="true"/>
