[lug] Using consoles

[David Outteridge]

Yesterday, whilst logged in as myself, I wanted to log in as root.
Normally I would use su, but this time I did not know how to start up
all the stuff I needed so I wanted to log in from the login prompt.  I
used C-A-f2 and got a login prompt.  The login was ok.  But when I
tried to start X it did not work for the reason that display 0 was
already in use.  Can anyone explain this a little, please?  How do I
do it?  Can it be done?

dajo