What steps will reproduce the problem? 1. Removing unity 2. Installing Gnome-panel 3.

What is the expected output? What do you see instead? Cannot find default session

What version of the product are you using? On what operating system? multiseat-wizard-bicefalo-ubuntu12.04-i386.tar.gz / Ubuntu 12.04 with Gnome-panel

Please provide any additional information below.

How can I change the unity display manager to gnome-panel?