I have a Dell Latitude D620 that I am happily running 13.04 on. When I reboot the laptop with an external display connected , Unity will come up without the launcher, menu bar or context menus (right click on the mouse) enabled. If I disconnect the monitor from VGA1 and reboot the laptop, Unity comes up fine. I then reconnect the monitor and everything works until I need to shutdown the computer. Then when I reboot I must remember to disconnect the monitor before I start the laptop.

How can I correct this issue so that the system boots properly into unity with the external monitor connected ? Any help would be appreciated.