diff --git a/repos/os/include/nitpicker_session/client.h b/repos/os/include/nitpicker_session/client.h
index c5f3032fd..f569be68a 100644
--- a/repos/os/include/nitpicker_session/client.h
+++ b/repos/os/include/nitpicker_session/client.h
@@ -74,6 +74,9 @@ class Nitpicker::Session_client : public Genode::Rpc_client<Session>
 		Framebuffer::Mode mode() override {
 			return call<Rpc_mode>(); }
 
+		void mode_sigh(Genode::Signal_context_capability sigh) override {
+			call<Rpc_mode_sigh>(sigh); }
+
 		void buffer(Framebuffer::Mode mode, bool alpha) override {
 			call<Rpc_buffer>(mode, alpha); }
 
diff --git a/repos/os/include/nitpicker_session/nitpicker_session.h b/repos/os/include/nitpicker_session/nitpicker_session.h
index 6c8616fc0..23f99f9c6 100644
--- a/repos/os/include/nitpicker_session/nitpicker_session.h
+++ b/repos/os/include/nitpicker_session/nitpicker_session.h
@@ -252,6 +252,11 @@ struct Nitpicker::Session : Genode::Session
 	 */
 	virtual Framebuffer::Mode mode() = 0;
 
+	/**
+	 * Register signal handler to be notified about mode changes
+	 */
+	virtual void mode_sigh(Genode::Signal_context_capability) = 0;
+
 	/**
 	 * Define dimensions of virtual framebuffer
 	 *
@@ -304,6 +309,7 @@ struct Nitpicker::Session : Genode::Session
 	GENODE_RPC(Rpc_execute, void, execute);
 	GENODE_RPC(Rpc_background, int, background, View_capability);
 	GENODE_RPC(Rpc_mode, Framebuffer::Mode, mode);
+	GENODE_RPC(Rpc_mode_sigh, void, mode_sigh, Genode::Signal_context_capability);
 	GENODE_RPC(Rpc_focus, void, focus, Genode::Capability<Session>);
 	GENODE_RPC_THROW(Rpc_buffer, void, buffer, GENODE_TYPE_LIST(Out_of_metadata),
 	                 Framebuffer::Mode, bool);
@@ -323,10 +329,11 @@ struct Nitpicker::Session : Genode::Session
 	        Type_tuple<Rpc_command_dataspace,
 	        Type_tuple<Rpc_execute,
 	        Type_tuple<Rpc_mode,
+	        Type_tuple<Rpc_mode_sigh,
 	        Type_tuple<Rpc_buffer,
 	        Type_tuple<Rpc_focus,
 	                   Genode::Meta::Empty>
-	        > > > > > > > > > > > Rpc_functions;
+	        > > > > > > > > > > > > Rpc_functions;
 };
 
 #endif /* _INCLUDE__NITPICKER_SESSION__NITPICKER_SESSION_H_ */
diff --git a/repos/os/src/server/nitpicker/main.cc b/repos/os/src/server/nitpicker/main.cc
index 6e83cf999..2f0fd9aae 100644
--- a/repos/os/src/server/nitpicker/main.cc
+++ b/repos/os/src/server/nitpicker/main.cc
@@ -420,6 +420,8 @@ class Nitpicker::Session_component : public Genode::Rpc_object<Session>,
 
 		Mode &_mode;
 
+		Signal_context_capability _mode_sigh;
+
 		View &_pointer_origin;
 
 		List<Session_view_list_elem> _view_list;
@@ -697,6 +699,15 @@ class Nitpicker::Session_component : public Genode::Rpc_object<Session>,
 				_destroy_view(*static_cast<View *>(v));
 		}
 
+		/**
+		 * Deliver mode-change signal to client
+		 */
+		void notify_mode_change()
+		{
+			if (_mode_sigh.valid())
+				Signal_transmitter(_mode_sigh).submit();
+		}
+
 		void upgrade_ram_quota(size_t ram_quota) { _session_alloc.upgrade(ram_quota); }
 
 
@@ -859,6 +870,11 @@ class Nitpicker::Session_component : public Genode::Rpc_object<Session>,
 			                         _framebuffer.mode().format());
 		}
 
+		void mode_sigh(Signal_context_capability sigh) override
+		{
+			_mode_sigh = sigh;
+		}
+
 		void buffer(Framebuffer::Mode mode, bool use_alpha) override
 		{
 			/* check if the session quota suffices for the specified mode */
@@ -1294,6 +1310,13 @@ void Nitpicker::Main::handle_fb_mode(unsigned)
 
 	/* redraw */
 	user_state.update_all_views();
+
+	/* notify clients about the change screen mode */
+	for (::Session *s = session_list.first(); s; s = s->next()) {
+		Session_component *sc = dynamic_cast<Session_component *>(s);
+		if (sc)
+			sc->notify_mode_change();
+	}
 }