6 Replies Latest reply: Nov 30, 2013 7:45 PM by Grant Bennet-Alder
nemosutopia Level 1 (0 points)

Mac Pro 10.6.8


I'm having some really odd issues.   My mac has frozen several times in the past few days and now the windows appear "broken" - odd jagged lines and dancing blue pixels...  strangely they appear on the desktop and only some web pages...  it isn't on this page, but its all over my gmail.


I took some screen grabs.


Going to do a cloud backup and try to upgrade to mavericks to see if that will clear it up...  just wanted to post here in case anyone heard of this - - 


will update upon completion of upgrade... or if it all goes kaput. 

  • nbar Level 5 (6,980 points)

    This sounds like a hardware issue. Specifically, either a faulty display, or logicboard. To test, take a screen shot the next time the distortion appears. If the artifacts appear on the screenshot, the problem is most likely related to your logicboard. If they do not, the problem is with the display itself

  • nemosutopia Level 1 (0 points)

    I definitely have them captured in the screen shot.  The distortion is always on the finder now - but it comes and goes w each window.  Super strange.  Been a mac user for 15+ years, have not seen dancing pixel problems. 


    You can see in the snap that its both got dots and some jagged lines... 


    How should I approach the logicboard issue?  Its definitely an aging mac pro...


    am backing up via crashplan and considering drive genius 3....  understanding that it may just be a matter of time before it craps out entirely...



  • nbar Level 5 (6,980 points)

    How should I approach the logicboard issue?

    This is a hardware problem, specifically your GPU, and no online troubleshooting will address it. The only way to fix this is to get it physically repaired. You can bring it in to a local Apple Store. I would advise this at the very least, because they will confirm the problem, free of charge, by running a diagnostics test. If a component fails, they will then give you a quote. Out of warranty, a logicboard is a pricey fix.


    As an intermediary test, you can use the Apple Hardware Test. Run the extended version, 3X back to back. Note this test will produce false negatives, especially in regards to logicboard related issues.

    Using Apple Hardware Test - Support


    am backing up via crashplan and considering drive genius 3....  understanding that it may just be a matter of time before it craps out entirely...

    This is the best plan of action at this course of time. I would advise against drive genius as a back-up method, as it is not really made for this purpose. I would make a physical backup in addition to crashplan (to my understanding, crash plan is a back-up stored on a server). You can do so via time machine, or software such as Carbon Copy Cloner.


    Make an appointment at your local Apple store and confirm the diagnosis. You will then get a price quote and you can decide the best plan from there...sorry to be the bearer of bad news. BOL. Regards.

  • nemosutopia Level 1 (0 points)

    thank you for your help - -


    I will definitely follow this course as best as I can - -


    happy to write that you solved my problem - -

  • nbar Level 5 (6,980 points)

    happy to write that you solved my problem

    I wish I could...but, I didn't. These communities are filled with members much more experencied than I...turns the apple "geniuses" into used car salesmen. That being said, they still got the hardware. All jokes aside, it really stinks to have hardware fail, especially when facing the costs Apple charges . The new Mac Pro should be out soon...always a silver lining [if you have 3k+ to drop and can look at a failing Mac as, rather, a blessing in disguise ]. Best of luck.

  • Grant Bennet-Alder Level 9 (56,629 points)

    If this is a Mac Pro 65lb tower, and

    They tell you you need a new graphics card, and

    They offer to sell you an exact replacement card older than the Apple-firmware 5770, >> PASS.


    Buy the 5770 as a minimum, about US$250. It works in all models of Mac Pro, has more VRAM than older cards, and supports OpenCL. Drivers are in 10.6.5 and later.