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Frequent Kernel Panics and freezes on 10.7.5

618 Views 17 Replies Latest reply: Jan 27, 2013 5:45 PM by Grant Bennet-Alder RSS
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EliteConceptual Calculating status...
Currently Being Moderated
Jan 26, 2013 7:18 AM



I have a MacPro1,1 running


Processor  2 x 1.86 GHz Xeon E5320

Memory  14 GB 667 MHz DDR2 FB-DIMM

Graphics  ATI Radeon HD 5770 1024 MB

Software  Mac OS X Lion 10.7.5 (11G63)


It experiences frequent to Semi Frequent crashes. The crashes are either full-out kernel panics as listed below. However far more frequent are the "freezes" which simply leave the computer "locked" and unresponsive, but powered on. These stump me more than anything else as they cannot be overrident by hardware or software. At least with the kernel panics the machines reboots eventually.


-rw-rw----@  1 root  admin    6656 26 Dec 14:28 Kernel_2012-12-26-142834_ElitePro-2.panic

-rw-rw----@  1 root  admin    7421 29 Dec 21:11 Kernel_2012-12-26-144050_ElitePro-2.panic

-rw-rw----@  1 root  admin    8276 29 Dec 21:11 Kernel_2012-12-29-155613_ElitePro-2.panic

-rw-rw----@  1 root  admin    7676  8 Jan 01:37 Kernel_2013-01-01-210956_ElitePro-2.panic

-rw-rw----@  1 root  admin    7573  8 Jan 01:37 Kernel_2013-01-07-201034_ElitePro-2.panic

-rw-rw----@  1 root  admin    7262 15 Jan 05:17 Kernel_2013-01-10-200300_ElitePro-2.panic

-rw-rw----@  1 root  admin    8542 15 Jan 05:17 Kernel_2013-01-13-134451_ElitePro-2.panic

-rw-rw----@  1 root  admin    7482 22 Jan 06:08 Kernel_2013-01-16-084336_ElitePro-2.panic

-rw-rw----@  1 root  admin    7382 22 Jan 06:08 Kernel_2013-01-17-083933_ElitePro-2.panic

-rw-rw----@  1 root  admin    7513 22 Jan 06:08 Kernel_2013-01-20-150603_ElitePro-2.panic

-rw-rw----@  1 root  admin    6621 23 Jan 23:40 Kernel_2013-01-23-234042_ElitePro-2.panic

-rw-rw----@  1 root  admin    6194 24 Jan 08:08 Kernel_2013-01-24-080838_ElitePro-2.panic


So a few caveats up front:


1) the CPUs were upgraded to run a series of enterprise packages (Virtual Machines and more where we needed at least six spare cores). These were typed to the Mobo series and ran without issue for six months.

2) The Video card was upgraded to aa Apple-supplied ATI Radeon HD 5770 (so we coudl run triple displays)

3) the Main drive is an OCZ-VERTEX3 MI Media SSD.


Each have been swapped out at various times earlier in the last year to isolate the panics or to fins the defective parts. RAM was checked as well.


So I'm stumped. I can provide more machine information to post if needed.


Any ideas?

Mac Pro, Mac OS X (10.7.5)
  • magnusalex Level 1 Level 1 (0 points)
    Currently Being Moderated
    Jan 26, 2013 9:09 AM (in response to EliteConceptual)

    I am having almost exacly the same problem on my Mac Pro 1.1 with OS X 10.7.5. I just created a thread of my own. Hope you'll find a solution!

  • The hatter Level 9 Level 9 (58,535 points)
    Currently Being Moderated
    Jan 26, 2013 11:56 AM (in response to EliteConceptual)

    you tried your OEM processors? you are of course in untested waters.


    And does it work with 10.6.8?

  • Linc Davis Level 10 Level 10 (107,575 points)
    Currently Being Moderated
    Jan 26, 2013 12:06 PM (in response to EliteConceptual)

    Your problems are almost certainly caused by your unsupported hardware configuration, but post a panic log just to make sure.

  • Linc Davis Level 10 Level 10 (107,575 points)
    Currently Being Moderated
    Jan 27, 2013 1:00 PM (in response to EliteConceptual)

    You posted three panic logs with various sets of third-party kernel extensions loaded. I doubt that any of them is involved, but the only way you can be sure is test without them.

  • Linc Davis Level 10 Level 10 (107,575 points)
    Currently Being Moderated
    Jan 27, 2013 1:17 PM (in response to EliteConceptual)

    By testing without them, I mean testing without any of them.

  • Grant Bennet-Alder Level 8 Level 8 (48,110 points)
    Currently Being Moderated
    Jan 27, 2013 3:14 PM (in response to EliteConceptual)

    Machine-check status 0x0000000000000005:

    restart IP valid

    machine-check in progress

    MCA error-reporting registers:

    IA32_MC0_STATUS(0x401): 0xb200004000000800 valid

      MCA error code:            0x0800

      Model specific error code: 0x0000

      Other information:         0x00000040

      Status bits:

       Processor context corrupt

       Error enabled

       Uncorrected error


    This one is probably Error Correcting Code Memory error. Your Mac uses eight extra syndrome bit stored with each 64-bit word in memory, and these are checked by Hardware in the Xeon processor when read out. There is enough redundant information to:


    1) detect single-bit errors

    2) determine exactly which bit is in error

    3) correct the erroneous bit with Hardware in real-time (essentially NO slowdown)

    4) detect uncorrectable errors, such as double-bit errors


    Double-bit errors are intended to cause a kernel panic. This is an example of one.



    Mac Pro (Early 2009), Mac OS X (10.6.8), & Server, PPC, & AppleTalk Printers
  • Grant Bennet-Alder Level 8 Level 8 (48,110 points)
    Currently Being Moderated
    Jan 27, 2013 3:20 PM (in response to EliteConceptual)

    I agree with Linc Davis about the third-party kernel extensions.


    In addition, If you have performed a processor upgrade to the processors used in the Mac Pro 2,1, you will need the firmware that runs in a Mac pro 2,1 (or a work-alike) to maintain synchronization between processors. Spinlock acquisition problems may also be related to this. Check this forum for a discussion of this issue. You may heve to subscribe to the forum to get access to the complete discussion:


    Mac Pro (Early 2009), Mac OS X (10.6.8), & Server, PPC, & AppleTalk Printers
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