2010 Mac Pro 5870 Display Errors?

Discussion in 'Mac Pro' started by CountlovE, Sep 6, 2010.

  1. CountlovE macrumors regular

    Joined:
    Aug 17, 2007
    #1
    I have been noticing strange pixels forming patterns when I have an all black or white image. I took a picture of it, and you can see it from the photo. It looks like a red pattern across the screen and it actually moves with the application if I grab the window and move it around.

    Here is a photo with a box around the problem.

    http://img835.imageshack.us/img835/9843/atierror.jpg

    Not sure if it's bad ram on the card or something else.
     
  2. 2contagious macrumors 6502a

    2contagious

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    UK
  3. CountlovE thread starter macrumors regular

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    Aug 17, 2007
    #3
    Yeah when watching movies it is noticable in VLC on OSX too. I am thinking it is bad ATI ram on the card.
     
  4. sboerup macrumors 6502

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    Mar 8, 2009
    #4
    Normally thats sign of cable interference . . . usually because it's a sub-par cable. Have another cable to try? Is it DVI or MDP?
     
  5. CountlovE thread starter macrumors regular

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    Aug 17, 2007
    #5
    It's DVI. I do not have this problem with my other computer. It only happens with the Mac Pro.
     
  6. CountlovE thread starter macrumors regular

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    Aug 17, 2007
    #6
    Would that even happen from the cable? DVI is Digital. Not Analogue.
     
  7. pastrychef macrumors 601

    pastrychef

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    New York City, NY
  8. CountlovE thread starter macrumors regular

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    Aug 17, 2007
    #8
    I had this happen to my display while in OSX:

    http://vimeo.com/14808692

    password: macpro

    It went away after I pulled the DVI cable out and reseated the cable. So is it the cable, or the card?
     
  9. sboerup macrumors 6502

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    Mar 8, 2009
    #9
    I have had ALL DVI monitors since probably 2003, and I have run into bad cables that caused weird pixel colors. Swapped the cables and all was well, so, it sounds like a cable problem. Look for kinks or harsh bends.
     
  10. donw35 macrumors regular

    donw35

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    Jul 3, 2010
    Location:
    Los Angeles
    #10
    have you removed the video card and re install it ?
     
  11. CountlovE thread starter macrumors regular

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    Aug 17, 2007
    #11
    I haven't reseated the card. Is there documentation for that on a mac Pro? It look looked pretty forign to me when it came to pulling the card out. I tried to test another cable, but I purcashed a non Dual link DVI.

    Isn't there a video card memory test I can run? It still doesn't explain why the display works perfectly for my MacBook Pro at the same resolution, but I constantly have issues with the macpro.
     
  12. Vylen macrumors 65816

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    Jun 3, 2010
    Location:
    Sydney, Australia
    #12
    Read the manual that came with your Mac Pro on the section regarding adding expansion cards.
     
  13. xgman macrumors 601

    xgman

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    Aug 6, 2007
  14. CountlovE thread starter macrumors regular

    Joined:
    Aug 17, 2007
    #14
    I have a feeling the issue with the Display is a grounding issue with the macpro, and the graphics card. I notice a lot of strange behavior that seems to happen when my AC unit turns on. I am going to try a power conditioner later tonight.
     

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