Stuck with Xfce

[roman.meier@gismap.ch]

Hi folks,

I have installed all five desktop environments on the server. I want to
give all users a choice of various environments.

During the installation process a window popped up and gave me a choice
between two options. I think it was about the display manager. I chose the
default which was "lightdm".

The menu bar of the login screen now gives the user a choice of various
desktop environments. However, whatever I choose directs me to Xfce.

Any ideas, what is going on here?

Kind regards,
Roman