Black lines around opened files

Discussion in 'MacBook Pro' started by tintenter, Feb 16, 2014.

  1. tintenter macrumors newbie

    Joined:
    Nov 2, 2010
    #1
    For the past couple months, occurring sporadically a few times a week, when I open a file there are numerous black lines of varying width around the opened file. In the attachment you can see 2 thick black lines at the top of the file, 1 thick black line below the file and multiple narrow lines on the left and bottom of the file edges. Once they appear on 1 file all the following files I open will have these lines. If I restart the laptop they will go away. Any ideas? I have a MBP 15inch, mid 2010. OS X 10.9.1. Thanx, bj
     

    Attached Files:

  2. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #2
    Do they appear in a screenshot?

    Do you mean these lines?
    [​IMG]

    What happens if you close the Finder window or switch to another Desktop?
     
  3. tintenter thread starter macrumors newbie

    Joined:
    Nov 2, 2010
    #3
    The attachment was taken with my iPhone and downloaded to my laptop. I have not tried taking a screenshot. bj
     
  4. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #4
    The picture I attached to my post has some areas of the photo highlighted. Are those the areas or black lines you talk about?
     
  5. tintenter thread starter macrumors newbie

    Joined:
    Nov 2, 2010
    #5
    The lines you outlined in red are what I'm concerned with. I'm not very knowledgable about computers. When I see this occurring I restart the laptop. bj
     
  6. simon48 macrumors 65816

    simon48

    Joined:
    Sep 1, 2010
    #6
    And then it's fixed?
     
  7. Montymitch macrumors regular

    Montymitch

    Joined:
    Feb 16, 2009
    #7
    I have the exact same thing on my machine occasionally. It's like the drop shadow around a window corrupts and displays artifacts. Switching dgpu fixes the problem, but it kills battery life.
    I hope someone here has an awesome fix for us (they always do!).
     
  8. tintenter thread starter macrumors newbie

    Joined:
    Nov 2, 2010
    #8
    Restarting does fix the problem. When the problem starts - any file I open will be affected. There is no predictability as to when this will occur. bj

    ----------

    What is "dgpu" and how do you switch dgpu? When I described what was happening to a coworker who is experienced with Macs he thought possibly my video card may be going bad. I sure hope not. bj
     
  9. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #9
    dGPU stands for "dedicated Graphics Processing Unit", which is the Nvidia GeForce 330M GT in your 15" MBP.
    Have you tried gfxCardStatus[/URL] is the tool to manually switch GPUs, as you also have an integrated graphics processor (IGP), the Intel HD Graphics, inside your Mac.
     

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