issue with VNC when there is no monitor
Check out http://ubuntuforums.org/showthread.php?s=1d7ec44878f85eedc7376595b188983b&t=1471785&page=2. These people had the same issue as you.
Check out http://ubuntuforums.org/showthread.php?s=1d7ec44878f85eedc7376595b188983b&t=1471785&page=2. These people had the same issue as you.