I wrote a new script to launch a gdm login screen when a Plugable Docking Station is attached on the machine. To use this script, I reduced the number of ConsoleKit display.d, session.d and seat.d files. Now there is only one of each kind of file. The current version of my work is hosted at my git repository. To test it just follow the same tutorial of the last post and then attach a Dock Station on the machine. A gdm login should appear at the monitor.