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Question

Kernel Panic another one. (any one help)

  • April 17, 2014
  • 6 replies
  • 21 views

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6 replies

damienbarrett
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  • Honored Contributor
  • April 17, 2014

Okay....and?

Have you done any troubleshooting at all? Have you run the Apple Diagnostics (http://support.apple.com/kb/HT5781) tool?

Do you have another same-generation iMac? If so, can you swap RAM for a few days and see if the KP's continue?

In my experience, 90%+ of kernel panics are caused by hardware problems, and the most common is bad or marginal RAM.

Do you have any peripherals attached? Can you detach them for a day or two and see if the problem goes away? I've seen some old USB peripherals cause problems on newer Macs.


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  • Author
  • Contributor
  • April 17, 2014

did all that. All seems well but still KP seems to be happening at least once a day @damienbarrett


mm2270
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  • Legendary Contributor
  • April 17, 2014

You have the following USB devices hooked up to this Mac, some of which I would disconnect (underlined ones are what I would attack) KPs can sometimes be related to incompatible USB devices or bad drivers.

USB Device: BRCM20702 Hub
USB Device: Bluetooth USB Host Controller
USB Device: FaceTime HD Camera (Built-in)
USB Device: Keyboard Hub
USB Device: Store n Go Drive
USB Device: Apple Keyboard
USB Device: Intuos5 touch M

Also not sure if that Keyboard Hub is an external device or just how the OS registers the internal USB hub. I think that may be something external. Any one of those could be your culprit.


damienbarrett
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  • Honored Contributor
  • April 17, 2014

Typically, the offending thing shows up in the backtrace, so it's as good a place to start as any. In your KP log above, it's showing your HID and USB kernel extensions as potential culprits. I'd start there. I know you *say* you've removed all your attached devices, but have you really? Are you sure? Even your keyboard and mouse (use different ones)?


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  • Author
  • Contributor
  • April 17, 2014

all great advice ill take it and try working on them now. Thanks a lot folks


Chris_Hafner
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  • Jamf Heroes
  • April 21, 2014

I agree. Unfortunately USB relies on so much of your computer it can be hard to pin down. The log seems to point in that direction... Regardless, I hope you've got AppleCare. It could easily be the logic board as well and that's not that pretty. Anytime I see this type of stuff I always check

1) Firmware Updates... (long shot)
2) USB chain (as mentioned)
3) Memory
4) Hard Drive
5) Dammit... try not to get to number 5