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Ubuntu version 12.04 through the latest tested (14.04) the default VNC Server only lets you connect remotely once the user has logged into Gnome or XFCE. This is not useful for a remote headless system. To configure the VNC Server to start with the system and listen before a user is logged in locally the vncserver must be configured to start with the system services. Obviously you need x11vnc installed before proceeding. Once installed...A VNC server is a program that shares a desktop with other computers over a network. '''Vino''' is the default VNC server in Ubuntu Linux. '''x11vnc''' is another VNC server that uses tcl/tk based GUI and is not dependent on any one particular graphical environment. '''Krfb''' is the default VNC server in Kubuntu that is integrated with KDE. The useful '''tightvnc''' creates a completely new desktop, not attached to any actual screen. You won't see what is going on in the vnc session from the host machine. Because of this you may need to consider which you prefer and what you are trying to accomplish. Ubuntu version 12.04 through the latest tested (14.04) the default VNC Server only lets you connect remotely once the user has logged into Gnome or XFCE. This is not useful for a remote headless system. To configure the VNC Server to start with the system and listen before a user is logged in locally the vncserver must be configured to start with the system services. For this it is the most simple to install x11vnc. === x11vnc to start with X.org === Obviously you need x11vnc installed before proceeding. Once installed...=== TightVNC server ===tightvnc is designed to be run from the command-line. To start it, type: tightvncserver -nolisten tcp :1To only allow local connections and automatically disconnect clients, start tightvnc by typing: tightvncserver -nolisten tcp -localhost -nevershared :1 Then when your client is disconnected by the next client connecting, type: tightvncserver -kill :1