Yes, it is gnome. The gnome-session.i686 has been installed, but the session could not be saved after logging out. According to following description of gnome-session, it should "handles logou... [by nobody]
I have installed Ubuntu Gnome 14.04 and the Gnome 3 stable + next + staging PPAs. So I have Gnome 3.12 installed and it works OK apart from one issue:
In GDM I have the Gnome and Gnome Classic sessions.
I've installed a Ubuntu 13.04 desktop, and added Gnome 3 by following:
I've also installed xrdp and now I'm trying to connect to my desktop from another box using FreeRDP.
I can login to Gnome-shell fine from the local session.