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• Kernel Panics, Mountain Lion, and Bluetooth

  UPDATE: We isolated the bug and implemented a workaround in Air Display Connect version 1.6.5. If you’re running Air Display on Mountain Lion, please Check For Updates. All will be well.

  
  

  
  

  We discovered a fascinating obscure bug in Mountain Lion. Fortunately there’s an easy workaround. Here’s the bug:

  1. Sleep your Mac (either explicitly or by closing a laptop).
  2. Turn off all of your Bluetooth devices.
  3. Wake your Mac.
  4. Watch helplessly as your Mac goes into a Kernel Panic.

  The workaround:

  1. Don’t do that. At least not in that order.

  If you turn off your Bluetooth devices before sleeping, you’ll be fine. If you don’t turn off the Bluetooth devices at all, you’ll be fine. It’s only if you turn off the devices while the Mac is sleeping that this happens.

  Some people have also noticed that they can make the kernel panic go away by uninstalling certain third-party kernel extensions. Among them is Air Display. But don’t remove Air Display! It’s awesome!

  We’re expecting that Apple will fix this soon. It’s probably related to the half-finished work on Power Nap, which still (as of right now anyway) isn’t enabled on the Retina MacBook Pro. Since the bug appeared in the Mountain Lion GM, and since Power Nap still isn’t really finished, we’re guessing that the bug is the results of some stressful late-night code thrashing in Cupertino, and that Mac OS X 10.8.1 will address this.

  UPDATE

  We have more information. The above description is accurate if you have this option enabled on your Mac: Allow Bluetooth Devices To Wake Your Computer. It’s on by default. If you turn that option off (in System Preferences > Bluetooth > Advanced), the system will kernel panic even if you don’t turn off the Bluetooth devices.

  So if the above workaround isn’t effective for you, make sure this option is turned on.

  RADAR

  If you’re at Apple, you can see more details at rdar://11977211.

  Posted 10 months ago

  10 notes

  Tags: apple, bluetooth, bug, kernel extension, kernel panic, mac os x, mountain lion, sleep, Avatron News,
• 1. buy-steroids-uk-co likes this
  2. andschwa reblogged this from avatronblog and added:

     I’m still having this issue on Mac OS 10.8.3 when bluetooth tethering to my Galaxy Nexus.

  3. andypiper reblogged this from avatronblog
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  9. alexandrecosta reblogged this from avatronblog and added:

     Bug chato do Mountain Lion…

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