streaks across LCD screen / external monitor

Discussion in 'MacBook Pro' started by mark2288, Feb 25, 2009.

  1. mark2288 macrumors regular

    Joined:
    Jan 11, 2006
    #1
    Of late, I have been getting random "streaks" across my screen when using my machine. The streaks do not go away when I minimize and maximize the program and they occur both on my MBP and on the external display I hook it up to. Check out the images I took with my camera to see what I'm talking about.

    I have a Rev A MBP with the following graphics card:
    Chipset Model: ATY,RadeonX1600
    Type: Display
    Bus: PCIe
    PCIe Lane Width: x16
    VRAM (Total): 128 MB
    Vendor: ATI (0x1002)
    Device ID: 0x71c5
    Revision ID: 0x0000
    EFI Driver Version: 01.00.068

    Has anyone had issues like this? Know what is causing it? Thanks!
     

    Attached Files:

  2. be300test macrumors member

    Joined:
    Nov 7, 2008
    #2
    bad video card or possibly bad ram.

    do a ram check.
     
  3. ryanws macrumors newbie

    Joined:
    Aug 8, 2008
    #3
    Same Issues with new Dual Link DVI adaptor...

    I am having the same issues with my new 17" MBP when hooking it up to my 30" ACD via a Dual Link DVI converter.

    Are you using a converter as well? Is anyone else having this problem?
     
  4. mark2288 thread starter macrumors regular

    Joined:
    Jan 11, 2006
    #4
    I'm just hooking it up to the external using a DVI-DVI cable. No converters in the middle.
     
  5. jjahshik32 macrumors 603

    Joined:
    Sep 4, 2006
    #5
    Is it doing it without connecting to an external display? If not then I wouldnt worry too much but if it is.. time to ship it to apple care.
     
  6. mark2288 thread starter macrumors regular

    Joined:
    Jan 11, 2006
    #6
    It does it when:
    - it is not connected to the external display
    - when connected to the external display on the external display (I have it docked so the LCD on the MBP is off)
     
  7. jofus macrumors member

    Joined:
    Feb 27, 2008
    #7
    Ugly. Haven't seen that before. Do you have AppleCare?
     
  8. furunculo macrumors newbie

    Joined:
    Jun 30, 2009
    #8
    I have exactly the same problem!

    Hi, I just got today a brand new MacBook Pro 13' and I connect it to a DVI Dell 24 inch monitorand the same streaks you have popped up. I read in other threads that the problem seems to be of signal integrity on the small miniport to dvi adapter, though most of them appear if you have a dual link 30' panel (I guess the chance of interference goes up a lot). I don't have any issues on the laptop LCD panel, only in the external monitor.

    How did you fix your problem?
    Thanks!
     

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