Edit File: com.redhat.problems.configuration.xml
<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN" "http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd"> <node> <interface name="com.redhat.problems.configuration"> <method name="SetDefault"> <arg name="name" type="s" direction="in" /> </method> <!-- <signal name="OptionChanged"> <arg name="name" type="s" direction="in" /> <arg name="value" type="v" direction="in" /> </signal> --> </interface> </node>