Robert Rozman wrote:

Hi,

I wonder if I must be running Xwindows on server computer when using remote xdmcp sessions (I know I have to run Xserver - but would like to gain some stability with not running xwindows on server computer).

First you have to use the correct terms. In X, the server is the system you're looking at, not the one you're running the app on. The client is the computer where the app is actually running. So in that respect, you have to be running X on the computer that you're using to access the computer where the app is running.