Testing a xorg.conf without logging out?

[Alain Cochard]

Andreas Hauser writes:

 > alain wrote @ Wed, 7 Dec 2005 23:00:52 +0100:
 > > Hello.  I am wondering if it is possible to activate a modified
 > > xorg.conf file without having to log out and log in back (because of
 > > course this takes a lot of time).  Thanks in advance. alain

 > $ startx -- :1
 > this tells X to take another DISPLAY then the default :0.

OK, thank you so much to you and to those who replied in private. 

I was thinking that this should be in a FAQ and in the xorg.conf man
page: I spent a lot of time Googling but I didn't find any mention of
this (neither Xorg or XFree86).  Every time they were speaking about
login out and back in, even when people were specifically asking the
same question as me.

Regards,
Alain