diff -Nru ibus-1.5.5/debian/changelog ibus-1.5.5/debian/changelog
--- ibus-1.5.5/debian/changelog	2014-02-20 20:20:01.000000000 +1300
+++ ibus-1.5.5/debian/changelog	2014-03-19 14:08:55.000000000 +1300
@@ -1,3 +1,11 @@
+ibus (1.5.5-1ubuntu3) UNRELEASED; urgency=medium
+
+  * debian/patches/ubuntu-forward-panel-properties.patch:
+    - Augment the panel service D-Bus interface so that external consumers can
+      detect when the panel service properties are changed.
+
+ -- William Hua <william.hua@canonical.com>  Wed, 19 Mar 2014 14:08:29 +1300
+
 ibus (1.5.5-1ubuntu2) trusty; urgency=medium
 
   * debian/patches/ubuntu-disable-trigger.patch:
diff -Nru ibus-1.5.5/debian/patches/series ibus-1.5.5/debian/patches/series
--- ibus-1.5.5/debian/patches/series	2014-02-17 14:10:13.000000000 +1300
+++ ibus-1.5.5/debian/patches/series	2014-03-19 14:05:59.000000000 +1300
@@ -98,3 +98,4 @@
 ibus-no-notification.patch
 03_dont_run_dconf_update.patch
 ubuntu-disable-trigger.patch
+ubuntu-forward-panel-properties.patch
diff -Nru ibus-1.5.5/debian/patches/ubuntu-forward-panel-properties.patch ibus-1.5.5/debian/patches/ubuntu-forward-panel-properties.patch
--- ibus-1.5.5/debian/patches/ubuntu-forward-panel-properties.patch	1970-01-01 12:00:00.000000000 +1200
+++ ibus-1.5.5/debian/patches/ubuntu-forward-panel-properties.patch	2014-03-19 16:41:24.000000000 +1300
@@ -0,0 +1,86 @@
+Description: Broadcast when panel properties are registered/updated
+ Augment the panel service D-Bus interface so that external consumers can
+ detect when the panel service properties are changed.
+Author: William Hua <william.hua@canonical.com>
+Bug-Ubuntu: https://bugs.launchpad.net/bugs/1290881
+
+Index: 1290881/src/ibuspanelservice.c
+===================================================================
+--- 1290881.orig/src/ibuspanelservice.c	2014-03-19 14:09:42.631147741 +1300
++++ 1290881/src/ibuspanelservice.c	2014-03-19 16:41:16.886869768 +1300
+@@ -136,8 +136,24 @@
+ 
+ G_DEFINE_TYPE (IBusPanelService, ibus_panel_service, IBUS_TYPE_SERVICE)
+ 
++/* Ubuntu-specific */
++#define UBUNTU_INTERFACE_PANEL "com.canonical.IBus.Panel.Private"
++
+ static const gchar introspection_xml[] =
+     "<node>"
++    /* Ubuntu-specific */
++    "  <interface name='" UBUNTU_INTERFACE_PANEL "'>"
++    "    <method name='ActivateProperty'>"
++    "      <arg direction='in' type='s' name='name' />"
++    "      <arg direction='in' type='u' name='state' />"
++    "    </method>"
++    "    <signal name='PropertiesRegistered'>"
++    "      <arg type='v' name='properties' />"
++    "    </signal>"
++    "    <signal name='PropertyUpdated'>"
++    "      <arg type='v' name='property' />"
++    "    </signal>"
++    "  </interface>"
+     "  <interface name='org.freedesktop.IBus.Panel'>"
+     /* Methods */
+     "    <method name='UpdatePreeditText'>"
+@@ -841,6 +857,20 @@
+ {
+     IBusPanelService *panel = IBUS_PANEL_SERVICE (service);
+ 
++    /* Ubuntu-specific */
++    if (g_strcmp0 (interface_name, UBUNTU_INTERFACE_PANEL) == 0) {
++        if (g_strcmp0 (method_name, "ActivateProperty") == 0) {
++            const gchar *name;
++            guint state;
++
++            g_variant_get (parameters, "(&su)", &name, &state);
++
++            ibus_panel_service_property_activate (panel, name, state);
++            g_dbus_method_invocation_return_value (invocation, NULL);
++            return;
++        }
++    }
++
+     if (g_strcmp0 (interface_name, IBUS_INTERFACE_PANEL) != 0) {
+         IBUS_SERVICE_CLASS (ibus_panel_service_parent_class)->
+                 service_method_call (service,
+@@ -929,6 +959,14 @@
+         g_signal_emit (panel, panel_signals[REGISTER_PROPERTIES], 0, prop_list);
+         _g_object_unref_if_floating (prop_list);
+         g_dbus_method_invocation_return_value (invocation, NULL);
++
++        /* Ubuntu-specific */
++        ibus_service_emit_signal ((IBusService *) panel,
++                                  NULL,
++                                  UBUNTU_INTERFACE_PANEL,
++                                  "PropertiesRegistered",
++                                  parameters,
++                                  NULL);
+         return;
+     }
+ 
+@@ -940,6 +978,14 @@
+         g_signal_emit (panel, panel_signals[UPDATE_PROPERTY], 0, property);
+         _g_object_unref_if_floating (property);
+         g_dbus_method_invocation_return_value (invocation, NULL);
++
++        /* Ubuntu-specific */
++        ibus_service_emit_signal ((IBusService *) panel,
++                                  NULL,
++                                  UBUNTU_INTERFACE_PANEL,
++                                  "PropertyUpdated",
++                                  parameters,
++                                  NULL);
+         return;
+     }
+