[ltp] Dual-head non-scrolling viewport

Michael Hagemann linux-thinkpad@linux-thinkpad.org
Mon, 21 Feb 2005 12:40:55 +0100


Hi Bob,


Bob Alexander wrote:
> John,
> sorry for disturbing directly but I am really LOST with one aspect of my 
> X and I believe you are much much more experienced than me.
> 
> If you have a few minutes I would like to know if you can come up with 
> some ideas.
> 
> My X works very very well on my T40 panel (1400x1050).
> 
> The problem I have is that when I use an external projector to give 
> lectures on how beautiful Linux is :) I cannot manage to see the full 
> screen.
> 
> Even if I resize the internal LCD to 1024x768 or even to 800x600, the 
> external projector, connected to the side VGA connector, will miss the 
> height of the GNOME panel from above and approx. 20% of the left side of 
> what I see on the internal LCD.
> 
> Here are some data. Thank you for any help.
> Bob
> 
> PS Asked before but maybe I am too stupid to ask the right question :(

I had the same problem before, and recently had some luck with a 
different projector.  I played with "CRT2HSync" and "CRT2VRefresh" 
options, which you also see in John's device section.  I set them to 
relative low values (vrefresh 50Hz), and got a nice projected picture. 
Now I only don't know whether the projector was better than the first 
one, or whether this generally helps...  Would be nice if you could try 
it on your projector.


hth,
michael