For a few days I can't boot a server in graphical mode.

The screen goes black and a have a CUI login.

I can login a user and at this point 'startx' get the graphical interface up

in /etc/inittab/

x: 5:respawn: /etc.X11/prefdm -nodaemon

and xdmcp is alivre

On this server we have 12 stations drived by LTSP as a terminal server. We can boot the stations to a point where the X graphical interface doesn't come up and the terminal stays with a grey screen with a big X in the center.

Do somebody can drive me to a solution?

---
Michel Donais