gnome-flashback 3.18.1-1ubuntu4 (s390x binary) in ubuntu xenial

 This package provides a helper application for the GNOME Flashback
 session. This application:
  - provides the Logout, Reboot and Shutdown dialogs;
  - provides the Sound, Bluetooth and Power tray applets;
  - implements screenshot and screencast functionality;
  - implements input source switching functionality;
  - draws desktop background;
  - implements other functionality which was previously handled by
    gnome-settings-daemon.