Really annoying mac pro problem

Discussion in 'Mac Pro' started by Macpropro80, Oct 3, 2009.

  1. Macpropro80 macrumors 6502

    Joined:
    Jan 31, 2009
    #1
    Hey everyone, I have a 2008 Octo mac pro. I recently got two new nvidia gt120's for it. I noticed that after about 15 minutes of use, or if I use a program that puts ANY load on my CPU, my mouse jumps around like its having a seizure. It makes the computer UN-usuable. It started after I updated to OSX 10.5.8, and It continued even after I installed Snow Leopard. I tried resetting the PRAM, Doing a repair disk permissions, changing the surface the mouse is on, using a wired mouse, a wireless mouse, changing mouse brands and NOTHING worked. Can someone please help me? Im about to ditch this computer. Its becoming a $4500 frustration generator. I use an MX Revolution desktop mouse (wireless) I tried a logitech G7 wired mouse, and it didnt help. I also tried a kensington wireless mouse and still had the same problem. The problem is most noticeable in iTunes. I also tried different USB ports.
     
  2. Macpropro80 thread starter macrumors 6502

    Joined:
    Jan 31, 2009
    #2
    quick thought could this be why apple doesn't officially support the GT120 in the 2008 mac pro?
     
  3. sparkie7 macrumors 68000

    sparkie7

    Joined:
    Oct 17, 2008
    #3
    if you still have your 2600XT lying around.. take both 120GTs out and put it back in and see if your problems go away
     
  4. tribe3 macrumors 6502

    Joined:
    Nov 1, 2005
    Location:
    Vienna, VA - USA
    #4
    Tough... I had my mouse going crazy on my 2006 machine once in a while but it got fixed by plugging a non-Apple mouse for a while ...random I know but it was a fix.

    In your case the only thing you got is changing back to the old card and see if it works.

    Good luck

    EDIT: Hey sparkie; both posts at 11:35 PM (my local time) ;)
     
  5. Macpropro80 thread starter macrumors 6502

    Joined:
    Jan 31, 2009
    #5
    It didnt help...... I am really about to lose my patients with this machine. It has given me nothing but problems since I bought it last august.
     
  6. kellen macrumors 68020

    kellen

    Joined:
    Aug 11, 2006
    Location:
    Seattle, WA
    #6
    I hope no one dies! Or did you mean patience?

    is anything else running or taking up cpu while this happens?
     
  7. Macpropro80 thread starter macrumors 6502

    Joined:
    Jan 31, 2009
    #7
    It usually starts when I open Final Cut Pro, itunes, or quick time. Or leave the computer on for more then 30 minutes.
     
  8. forester54 macrumors member

    forester54

    Joined:
    Oct 5, 2009
    Location:
    Washington
    #8
    do you still have your original MP mouse? see if it does it with that as well. Just start a process of elimination
     

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