VNC on Edubuntu 9.04 Thin Client Server
I'm trying to figure out VNC on Edubuntu. We have an Edubuntu 9.04 machine (i.e. Ubuntu 9.04 Desktop Edition with the Edubuntu add-on pack installed) acting as a thin client (LTSP) server. I have maybe a half-dozen thin clients I want to attach to this machine, which is not many. The idea is that this server will go in a classroom to provide some workstations for pupil use.
I want the VGA port of the server itself to be plugged in to a projector, and I want a teacher to be able to control that display via VNC. At the moment, I can log in to the Ubuntu machine and select the "share my desktop" under the "remote desktop" settings, but I already have to be logged in to the server to be able to connect via VNC - I can't use VNC to connect to the logon screen and type in my username and password to log in to the Ubuntu machine.
Anyone any idea how I go about getting a VNC server to run in a per-machine, show-the-physical-screen mode, as it seems to do on Windows, rather than in a per-user-session manner?