When installing dedicated clients, for example old PCs or thin terminal boxes, it's common to install the client to run in XDM mode. XDM is an acronym for X Display Manager and is the name of a small graphical program used for graphical logins in many Linux systems. By using the ThinLinc client in XDM mode you can make sure that the client appears automatically when the client hardware is started and that it reappears directly after a user logs out.

To run the client in XDM mode you need to start it with the -x option. When running in XDM mode the following changes will be made to the client interface.