1 2 Previous Next 19 Replies Latest reply: May 19, 2014 1:31 PM by Joseph Paschke Go to original post
  • 15. Re: Why is my tower restarting itself?
    Grant Bennet-Alder Level 8 Level 8 (49,275 points)

    (the others are necessary pro audio drivers),

    They are crashing your machine. Contact the Vendor's support site immediately, or stop using them.

  • 16. Re: Why is my tower restarting itself?
    Henri00 Level 1 Level 1 (0 points)

    Should I update to Lion? Will this make any difference?

  • 17. Re: Why is my tower restarting itself?
    Linc Davis Level 10 Level 10 (118,305 points)

    Will this make any difference?


    I'd expect it to make things worse. That's what usually happens when you upgrade a misconfigured system. If you won't even test with the third-party drivers removed, I don't have anything else to suggest.

  • 18. Re: Why is my tower restarting itself?
    Henri00 Level 1 Level 1 (0 points)

    Grant - yep, I've cut them all, or updated others just in case. We'll see what that gives in the morning.

    Linc - I'm sure you're right...I'll wait until this is squared away before updating.


    thanks again, have a great weekend



  • 19. Re: Why is my tower restarting itself?
    Joseph Paschke Level 1 Level 1 (0 points)

    The same thing is happening to my Mac pro tower (late 2009 running Snow Leopard).


    I have done some reading of people with the same problem. Some say it has to do with the way the snow leopard allocates the memmory, and recommend doing a permissions repair, showing it reduces the active memory usage in Activity Monitor.


    Link Davis recommended using the terminal to inset a command to find out more:


    syslog -k Sender kernel -k Message CReq 'GPU D|I/O|find tok|n Cause: -|timed? ?o' | tail | open -ef


    and to see if a message appears in a separate window after it has run.


    In my case it did:


    Fri May 16 21:12:25 Joes-Pro kernel[0] <Debug>: 00000000  ffffffff  Intel82574L::timeoutHandler - link is down

    Fri May 16 21:12:36 Joes-Pro kernel[0] <Debug>: Previous Shutdown Cause: -128


    he said a negative number  could indicate some kind of hardware failure (very vague)


    I have tried all these things including starting up from a different internal drive, starting in safe mode, holding down the option key and starting from another drive, and the restarting problem has occurred during it all. Finally after pushing in my power button and forcing a shutdown and then zapping the PRamwhen it started back up stabilzed it temporarily.


    I've had the machine at an Apple certified repair and diagnostic place and they couldn't find anything.


    They suggested replacing the drive(s), but I have done extensive low-level scans and no bad boot blocks have been found. The hard drives pass the tests in Disk Utility

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