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  1. #1
    MacBook Pro OSX Lion "Black Bars" Issue

    Member Since
    Mar 20, 2012
    Posts
    7
    Specs:
    Mac Pro Eight-Core "Westmere" Mid 2010 Model
    MacBook Pro OSX Lion "Black Bars" Issue
    Hi Mac-Forums!

    I recently updated to the newest OSX Lion update and when I rebooted my computer I got these strange "Widescreen" black bars on the top and bottom of my screen. It only happens when booting up and you see the pinwheel. When it finishes, it returns to normal size and sends me to the login screen. I'm wondering if this is a normal thing that came with the update or if something is wrong with my video card. Here are the images:





    Is anyone else having this problem? My friends aren't having this problem and they updated. Thanks!

  2. #2
    MacBook Pro OSX Lion "Black Bars" Issue

    Member Since
    Mar 01, 2013
    Posts
    2
    Black Bars Issue
    I have this exact issue as well. I am running Mountain Lion, but am not sure when the issue started. This is the first mention that I have found of the same issue that I am having, so I am hoping someone knows the solution.

  3. #3
    MacBook Pro OSX Lion "Black Bars" Issue

    Member Since
    Mar 01, 2013
    Posts
    2
    Fixed!
    System Preferences - Displays - Change from "Scaled" to "Best for built-in display".

    Fixed my problem, hopefully it will do the same for you!

  4. #4
    MacBook Pro OSX Lion "Black Bars" Issue

    Member Since
    Mar 20, 2012
    Posts
    7
    Specs:
    Mac Pro Eight-Core "Westmere" Mid 2010 Model
    Quote Originally Posted by drumhero1 View Post
    I have this exact issue as well. I am running Mountain Lion, but am not sure when the issue started. This is the first mention that I have found of the same issue that I am having, so I am hoping someone knows the solution.
    I was also able to resolve the issue by doing a PRAM Reset as well as an SMC Reset. It managed to fix all of the problems I was having including the black bars.

  5. #5
    MacBook Pro OSX Lion "Black Bars" Issue

    Member Since
    Sep 11, 2014
    Posts
    1
    Thumbs up Black Bars
    Thanks. It worked.

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