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Mac Thunderbolt Display Problem

Posted on 2014-08-20
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Last Modified: 2014-10-13
I have a user with the following problem with his home setup.
Details:
He is attaching his MacBook Air to a 27" Thunderbolt display.
He is using a Bluetooth touchpad and USB connected keyboard :

"My new display isn't playing nice with my MacBook air.
When I plug it in and close the lid on my MacBook the picture comes up in a much sharper resolution, which it is supposed to do, but at some point thereafter the display picture breaks up and then the screen goes blank. I have to unplug it, open the MacBook lid, and then plug it back in to get a picture back. I don't seem to have the problem if I leave the lid open, but I also don't get the nice resolution either.
 Could this be a video card issue with the MacBook?"

Let me know what you think the problem could be.
Thank you.
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Question by:rr4406pak
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Expert Comment

by:Alan Henderson
ID: 40274791
It's necessary to follow the instructions below to ensure that your MacBook doesn't sleep when the lid is closed:
http://support.apple.com/kb/HT3131

This is also useful:
http://www.idownloadblog.com/2013/12/03/how-to-keep-your-macbook-awake-while-its-lid-is-closed/

:)
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Author Comment

by:rr4406pak
ID: 40283997
Thanks for the suggestions, but neither of those fixes worked.
It might be a problem with the display cable itself.
We are ordering a new one and we'll see if that does the trick.
Thanks.
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Accepted Solution

by:
rr4406pak earned 0 total points
ID: 40368568
The display cable replacement worked. Thanks.
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Author Closing Comment

by:rr4406pak
ID: 40376653
The fix I tried worked.
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