Bug#270743: This is most probably a hardware problem

[Michael Klein <michael.klein@puffin.lb.shuttle.de>]

Hi,

I suffered from the same problem for quite some time now. It was
obviously a loose-fitting display data connector on the logic board.
Re-seating the connector solved it for me.

See http://www.pbfixit.com/Guide/51.16.13.html (middle image)

Cheers,

-- 
Michael

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