/usr/share/xsessions/gnome-fallback-compiz.desktop is in gnome-session-flashback 1:3.8.0-1ubuntu11.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 | [Desktop Entry]
Name=GNOME Flashback (Compiz)
Comment=This session logs you into GNOME with the traditional panel
Exec=gnome-session --session=gnome-flashback-compiz
TryExec=gnome-session
Icon=
Type=Application
X-LightDM-DesktopName=Unity
X-Ubuntu-Gettext-Domain=gnome-panel-3.0
|