karmic koala and intel i915 chipset don’t go much well together on monitorless pc’s, apparently because of this : 431812
besides that, the computer just hangs in an endless loops trying to detect the non present monitor.
the solution is quite simple – although i needed 3 hours to figure it out since karmic koala uses the new upstart service management.
just replace in /etc/init/gdm.conf
start on (runlevel [3]
and filesystem
and started hal
and tty-device-added KERNEL=tty7
and (graphics-device-added or stopped udevtrigger))
stop on runlevel [0216]