7.10: Changed the driver from 'i810' to 'intel':
I was not able to use the GUI "Admin>Screens and Graphics" which would always 
revert back to i810. Therefore I rebuild the xorg settings using 
"dpkg-reconfigure xserver-xorg", where I was able to select the intel driver 
and resolutions.

Then I hooked up the beamer (Dell 1024x768), pressed [FN]+[F8] - and my
screen showed up. Now the funny thing: I can press [FN]+[F8] dozens of
times, without any further reaction, both the LCD and the beamer always
remain 'on'. The only reaction on the key combination is that the
beamer's picture is flickering for maybe half a second. So in my case,
[FN]+[F8] is not cycling through - but is not crashing either. Since the
beamer sports a 'blank screen' feature (as many modern models do), I can
blank out the beamer when I need to work in privacy. So, I can work.

After some reflection, maybe this behavior has to do with this little handy 
command I found:
I've stumbled upon the article: "XrandR 1.2 means decent Linux Screen 
Management at Last", which seems to answer a number of resolution and output 
target problems. I intend to test it more fully in the upcoming days.
http://lilserenity.wordpress.com/2007/10/15/ecstatic-xrandr-12-means-decent-linux-screen-management-at-last/

Thanks for your help
Tino

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External monitor on intel 945GM/Dell D620 (and D420) causes lockup.
https://bugs.launchpad.net/bugs/50243
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