Starting two X sessions with different xorg.conf's?

[Bill Marcum]

On 2009-09-22, Charlie Zender <zender at uci.edu> wrote:
> Ideally, I will work at my desk using the twinview monitors that are
> the default and appear in the session known at Ctl-Alt-F7.
> Then, when I need to travel, I switch to the laptop screen session
> using Ctl-Alt-F8. After traveling (actually just teaching using my
> laptop in another building twice a day), I re-dock my laptop and
> switch back to the Ctl-Alt-F7 twinview session.
>
> How should I start these sessions on Kubuntu Jaunty?
>
> The Kubuntu menu allows me to "change user" but it does not allow
> me to specify which xorg.conf for the new session. Is there an
> alternative like a command line way of starting Session 2 and
> specifiying which xorg.conf to use?
>
> Charlie
You might have to edit the kdm.conf (or whatever it's called, I use 
gdm) file that starts the X server, and restart kdm each time you 
switch between the twin screens and the laptop screen.