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2011 MB Pro - VGA Displays Skewed

Posted on 2011-03-15
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Last Modified: 2013-11-24
Hi All,

I have a 2011 MB Pro i7 with the new combination "mini display port" and "thunderbolt" connector.  I took the hard drive out of my old mac and put it in this one when I got it (since it's an SSD).  However, when I connect any external display via the VGA adapter, the desktop on the external display is skewed way to the right.  No auto-correct settings on the monitor or tinkering with the display settings seems to help.

Any ideas?  Perhaps I need to have the MB Pro "forget" the displays it remembered before?

Thanks,
David
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Question by:dsstao
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by:harryhelp
ID: 35137889
It is never a good idea to swap hard drives, the hard drive that came with the MacBook should be the only one used (unless you reinstall OS X on the other one, that is). I think that it is getting 'confused' because it didn't have those connections before...
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by:dsstao
ID: 35137949
Actually, I did reinstall OS X (it wouldn't boot otherwise).
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by:harryhelp
ID: 35137967
The latest version?
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by:dsstao
ID: 35137977
Yes
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dsstao earned 0 total points
ID: 35139161
I solved the problem:

1. Delete the com.apple.windowserver.plist preferences located at /Library/Preferences/com.apple.windowserver.plist and ~/Library/Preferences/ByHost/com.apple.windowserver.xxxx.plist/

2. There may be multiple com.apple.windowserver.xxxx.plist files in the ByHost folder. The xxxx will show as a series of letters and numbers. Delete them all.

3. Once the preferences are removed, reset the PRAM.
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Author Closing Comment

by:dsstao
ID: 35174528
I found the solution and it worked perfectly.
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