[Grml] grml-x glitches

I tested the FAQ advice about grml-x and nvidia. The simple command was

grml-x -nostart -module nvidia gdm

If I run as root, I get a strong warning message that grml-x does not support root. (P.S. Why not?)

If I run as a non-root user, I get error messages about the user lacking privileges to run certain binaries.

Mark