Distorted view when connecting MacBook Pro to beamer

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Ben Jamin

Bit poster
One of our customer has the following problem with his MacBook Pro and Parallels 7 installed, running Windows XP on it: Everey time when he connects the MacBook to a beamer via thunderbolt to VGA adapter, the screen turns into a resolution of 800x600, which is the common resolution for the connected beamer I guess. The screen looks fine on the beamer, but on the display of the MacBook the screen is distorted in the length direction. The customer has to show some technical drawings on the beamer and it's very annoying when the drawings are not displayed correctly on his Mac when he dispalys them on the beamer simultaneously.
With his old Bootcamp installation the display turns into the correct resolution with two black stripes on the left and the right side of the screen.

So my question is: Is there any possibility to change some options in Parallels to go sure that neither the picture on the beamer nor the picture on the Mac is distored when he will show both screens?

Thanks,
Ben
 
I'm guessing a "beamer" is a projector.

This is a Mac OS thing, not Parallels. In System Preferences in Displays in the Display tab, make sure the resolution selected is not a "stretched" resolution, just regular 800 x 600.

Steve
 
Thank you. Yes, it's a projector, sorry. But how can I change the values so that the Mac OS automatically scales the resolution to the optimal, non distorted value when I connect the projector to it?
 
The customer wants to display the screen on his Mac as a clone on the projector so both screens shows the same thing. I gues the general problem is that the projector has a 4:3 scale and the Mac has a 16:9 or 16:10 scale which results in this bad stretched view when both have the same resolution.
 
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