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Q: a blur straight line seen on dock

osx 10.9.4 mavericks

13 inch MacBook Pro mid 2009

A blur straight line is seen starting from apple logo at top to down at left side of the screen.

the straight line looks like blur guide line seen on graphics designing programs.

how to remove it?

MacBook Pro, OS X Mavericks (10.9.4)

Posted on Aug 8, 2014 1:26 AM

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