/usr/share/xsessions/cinnamon2d.desktop is in cinnamon-common 2.8.6-1ubuntu1.
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=Cinnamon (Software Rendering)
Comment=This session logs you into Cinnamon (using software rendering)
Exec=cinnamon-session-cinnamon2d
TryExec=/usr/bin/cinnamon2d
Icon=
Type=Application
X-Ubuntu-Gettext-Domain=cinnamon
X-GNOME-Provides=cinnamon2d
|