Thanks. Do not have an xserverrc file by default on Debian. Created a .xserverrc and just put exec X :0 in it.
Did this: Removed .xinitrc and .xsessions and just started X with 'xinit' (so it had no window manager and only an xterm). Would this mean the -nolisten tcp option was not done?
What I'm trying to do is get true type fonts served from a remote computer. X doesn't seem to open the right port and the font server xfstt complains variously, often that it cannot open a port.