On Thursday 16 November 2006 11:25, Simon Roberts wrote
> Most recently, I used SaX to try to enable "DualHead" mode. That has been
> partially successful. What I expected was two displays "side by side" with
> the mouse running between them. What I got is both displays running (at
> different resolutions) but showing identical output. Sounds good, right?
> Well only to a point.
> Any suggestions?
The answer to this question depends on the notebook you're using... and
the
projector... and unfortunately they all do this thing differently.
First, the hotkey sequence to toggle between the external VGA and the
TFT LCD
is only partially bios, and in fact is designed to interface with a windoze
driver [thnaks to the M$ evil monopoly]. However, determining which output
is active (on) by default is controlled (usually) by the bios only.
On my IBM ThinkPad R30 I set the bios display output to *BOTH* which by
default sends the video output to both the LCD and the external VGA port.
This works fine for the most part, however, there are a few catches which you
have also run into. The first catch is video resolution on the output to the
projector. Your laptop is configured (xorg.conf) for the LCD TFT monitor...
and is not configured for VGA output to a tube. Fortunately most modern
projectors are setup to "sense" and tune to whatever output it gets. (you
need one of those projectors). My projector will sometimes come up in 800x600
even though I am configured for 1024x768. The projector has a top side button
that when pressed will toggle up to the next resolution (if available) and
then display correctly. The second thing you'll probably run into is screen
blanking or screen saver modes. When I am teaching and I need the projector
to be up all the time I manually configure the bios (for that night) to use
*BOTH* LCD and VGA. I manually disable xscreensaver (I don't use the KDE
default) and I have the laptop bios set to *never* blank the screen (not turn
off the CCFL backlight).
Try looking at your bios settings (setup mode) for the laptop (which
one is
it?). Actually your "dual head" mode through SAX may be the best you are
going to get with this setup. The next step is to get more personally
acquainted with the projector you are using. You may even want to consider
upgrading the projector (better lumens, auto sensing, tapazoid output
[keystoning]... etc). Also, you might want to look closer at the "dual head"
settings in SAX... I have not... and see if you have the option to
individually configure the video to each head...
Which projector is it...? Which notebook...?
--
Kind regards,
M Harris <><
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