gnome-session-fallback 1:3.8.0-1ubuntu9 (powerpc binary) in ubuntu trusty

 The GNOME Session Manager is in charge of starting the core components
 of the GNOME desktop, and applications that should be launched at
 login time. It also features a way to save and restore currently
 running applications.
 .
 This is a transitional package to ease upgrades to gnome-session-flashback.
 It can be safely removed.