X Server Configuration Error

[Anthony Blaser]

Dear X Team

After having launched as root the command "Xorg -configure", I got the
following Fatal Server Error :  "Could not create lock file in
/tmp/.tXo-lock"

Knowing the root partition and the whole file system are absolutely
clean, as well the directory /tmp is currently accessible and clean
... I have really no idea where to put my hands to solve this issue !

Thanks in advance for your help !

With best regards
Anthony Blaser