[CentOS] dual head on laptop

[Collins Richey]

On 11/23/05, Sudev Barar <sbarar at gmail.com> wrote:
> On 11/24/05, Collins Richey <crichey at gmail.com> wrote:
> > On 11/23/05, Sudev Barar <sbarar at gmail.com> wrote:
> >
> > >
> > > Way out:
> > > 1. Connect the projector
> > > 2. Switch to console with Alt+Ctl+F1 (or F2...)
> > > 3. Toggle to projector setting (or shared setting) As you are in text
> > > the projector will beam the command line.
> > > 4. Start another X session by command startx -- :1
> > >
> > > This works for me almost always subject to X resolution being within
> > > power of projector. By experience mostly 1024x768 works.
> > >
> >
> > Thanks, I'll try that next time I'm near a projector.
> >
> > Oops, there must be more to it. When I try 'startx -- :1 on tty2, I
> > get a log of messages from X, none of them errors, but no X screen on
> > tty8 (or ???). This is now a bit <OT>, so if you want to respond in a
> > new thread, that's OK.
>
> startx -- :1
> Watch spaces before and after --
> You can also try startx -- :2
> You do not have to switch to tty8 because as soon as X starts the
> console switches automatically.
>

Thanks. I couldn't get your suggestion to work, but a little RTFM in
the man pages came up with

'xinit ./second -- :1.0'. This  does the job. ~/second is

#!/bin/sh
xsetroot -solid black &
ooffice sample.xsi

My system (at the moment I'm booted from Ubuntu) doesn't like the
unadorned ':1'. I'll have to verify when I boot CentOS.

Now I just need to find a projector to try this out.

--
Collins Richey
      Debugging is twice as hard as writing the code ... If you write
      the code as cleverly as possible, you are, by definition, not
      smart enough to debug it.
             -Brian Kernighan