MPB + Wireless 108M == Kernel Panic

Discussion in 'Mac Pro' started by dsavage, Aug 11, 2006.

  1. dsavage macrumors newbie

    Joined:
    Aug 10, 2006
    #1
    OK, It seems the Macbook Pro has a problem dealing with wireless running
    at 108Mhz.

    Background:
    Recently, my wife began experiencing Kernel Panics on her MBP. Suspecting
    hardware issues, we took it to the Apple Store for repair. 3 Trips and
    multiple parts replaced, Apple replaced the entire unit.

    When we got home... Boom .... kernel panic.

    At that point, I figured it could not be hardware!! I had now seen the kernel
    panic issues with 4 different MacBooks:

    1) Original MBP with 2.0G CPU
    2) Original 2.0G with "fixed" (latest rev) motherboard
    3) New 2.16G MBP
    4) Sons 2.16G MBP​

    All 4 units experienced random Kernel Panics all listing the same basic
    traceback related to:

    com.apple.driver.AirPortAtheros5424
    com.apple.iokit.IONetworkingFamily
    com.apple.iokit.IOPCIFamily
    com.apple.iokit.IO80211Family

    Figuring wireless was at fault, I went though the process of elimination:

    Downgrading from 2.0 to 1.0 software on the router : no change
    Trying WPA and not WPA2 : no change
    Trying WEP : no change
    Disabling the extend range mode : no change
    Setting the router to b/g mode only : helped

    After that the MBP went from crashing ever hour to so, to crashing once or
    twice a day. Thinking the 108 had something to do with it, I shut off my my
    second wireless access point (used for the work access). Both my wife's and
    son's MBP has now been running with no fault for days.

    Conclusion:
    If the MPB is associated to a device running 108 - it crashes very
    frequently (time is random from 15 mins, to 2 hours). However, what's real
    interesting to me is the MBP does not actually have to be associated, just
    doing wireless in the presents of a wireless router operating at the 108
    speed for it to crash the MBP.

    Also, note I have *NOT* seen these issues with the Powerbook Pro at all.

    Other comments, both Wireless Routers in operation are Netgear WPN802. This weekend I will likely change back to WPA2 and upgrade the firmware to 2.x to be sure those are not related...
     
  2. benthewraith macrumors 68040

    benthewraith

    Joined:
    May 27, 2006
    Location:
    Miami, FL
    #2
    Well, if you suspect that it's the pre-N stuff that's causing the crashes, why don't you set your router on 54Mbps only.
     
  3. dsavage thread starter macrumors newbie

    Joined:
    Aug 10, 2006
    #3
    I did....
    Setting the router to b/g mode only : helped

    But the remaining concern is:
    However, what's real
    interesting to me is the MBP does not actually have to be associated, just
    doing wireless in the presents of a wireless router operating at the 108
    speed for it to crash the MBP.

    So if i am in at a hot spot running 108 - i cant control that....
     
  4. Anonymous Freak macrumors 601

    Anonymous Freak

    Joined:
    Dec 12, 2002
    Location:
    Cascadia
    #4
    I will just comment that I ran my MacBook Pro (week 8, from the first batch,) on a client's Pre-N Netgear router just fine for over two hours with no problems.
     
  5. benthewraith macrumors 68040

    benthewraith

    Joined:
    May 27, 2006
    Location:
    Miami, FL
    #5
    I don't think you'll have to worry about 108Mbps hotspots anytime soon, at least until the standard is released.

    Routers are funky things, I would see if it acts like that on other 108Mbps routers from Netgear, of course, it's Netgear so...

    Also, N hasn't been finalized, and there are several competing technologies, so it may just be a conflict with that.
     

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