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Kernel panics galore

P

paulcapewell

macrumors newbie
Original poster
Nov 4, 2006
9
0
Hi, I just started getting lots of kernel panics in the last 24 hours or so, and since reinstalling Mac OS, I am getting lockups where the keyboard and trackpad won't respond, and still kernel panics too.

This is an iBook G4 1.42GHz with 1GB of RAM. Here is what I believe is the panic.log - any clues?

Sat Nov 4 11:25:22 2006
panic(cpu 0 caller 0x000A8B98): Uncorrectable machine check: pc = 000000002EC5E55C, msr = 0000000000149030, dsisr = 42000000, dar = 00000000E1C22000
AsyncSrc = 0000000000000000, CoreFIR = 0000000000000000
L2FIR = 0000000000000000, BusFir = 0000000000000000

Latest stack backtrace for cpu 0:
Backtrace:
0x00095544 0x00095A5C 0x0002683C 0x000A8B98 0x000A7E28 0x000ABB00
Proceeding back via exception chain:
Exception state (sv=0x2DDA8000)
PC=0x2EC5E55C; MSR=0x00149030; DAR=0xE1C22000; DSISR=0x42000000; LR=0x2EC72FD4; R1=0x17F6BD30; XCP=0x00000008 (0x200 - Machine check)
Backtrace:
0x027E1C60 0x2EC72FD4 0x002CD5B4 0x002CC47C 0x000A9694
Kernel loadable modules in backtrace (with dependencies):
com.apple.iokit.AppleAirPort2(401.2)@0x2ec34000
dependency: com.apple.iokit.IONetworkingFamily(1.5.0)@0x2dd09000
dependency: com.apple.iokit.IOPCIFamily(1.6)@0x27fde000
Exception state (sv=0x2DB44A00)
PC=0x00000000; MSR=0x0000D030; DAR=0x00000000; DSISR=0x00000000; LR=0x00000000; R1=0x00000000; XCP=0x00000000 (Unknown)

Kernel version:
Darwin Kernel Version 8.2.1: Fri Jun 24 23:31:10 PDT 2005; root:xnu-792.3.2.obj~1/RELEASE_PPC

*********


Thanks for any advice!

I had assumed it was a power problem and have tried resetting the PMU and PVRAM, but the problems are still there.

The panics seem sporadic and happen when I'm not doing anything sometimes.

Thankyou in advance for any tips.

Paul
 
Are you running anything different or have you changed any settings? If not, I would get thyself to an Apple store ASAP (after backing up if possible).
 
paulcapewell said:
Kernel loadable modules in backtrace (with dependencies):
com.apple.iokit.AppleAirPort2(401.2)@0x2ec34000
dependency: com.apple.iokit.IONetworkingFamily(1.5.0)@0x2dd09000
dependency: com.apple.iokit.IOPCIFamily(1.6)@0x27fde000
Exception state (sv=0x2DB44A00)
PC=0x00000000; MSR=0x0000D030; DAR=0x00000000; DSISR=0x00000000; LR=0x00000000; R1=0x00000000; XCP=0x00000000
Click to expand...
Is it airport related?
 
Eraserhead said:
Is it airport related?
Click to expand...

It would seem to be but spotlight doesn't find any of those plist files on my iMac G5.

I was going to suggest finding those plist files and placing them on the desktop and rebooting or reseating AirPort card.
 
Airport seems fine - I am posting on the Mac right now, via wireless.

I haven't added any new hardware or software recently. The only 'different' hardware attached is 512MB of RAM which I added months ago and it has worked fine up til yesterday.

My only clue is that the power cable has had a dodgy connection for a while, needing to be wiggled to make sure it is charging. I guess its coming from that, or the PMU board? Does the panic log make any reference to that?

Thanks for your replies so far.

(and yeah, I did a backup of my Users folder yesterday to an external HDD, I'm glad I did now)
 
paulcapewell said:
Airport seems fine - I am posting on the Mac right now, via wireless.
Click to expand...

It could be intermittent. I got kernel panics on my iMac G5 caused by FAT problems, I reformatted my external HD and the problems disappeared. If you are getting lots of kernel panics try connecting to the internet via ethernet for a day or two and see if it goes away. Then if it does call Apple and get it fixed.

I doubt power problems would cause kernel panics (unless they were frying the internal components with the wrong voltage or something...)
 
Hmm it could indeed be intermittent. I mean, the first one yesterday was literally while I was away from my mac making a cuppa! Nothing more toxic than firefox and adium and itunes running.

And that said, I've been logged in now for about 20 minutes with no panics. Granted I'm running nothing other than firefox but its...promising? Maybe.

And thanks for the tip about power - I am hoping it isn't to do with that and will make do with cable-wiggling (though I guess I should repair that in the long run)

If I connect to my router with an ethernet cable, does the connection 'just work' or do I need to 'log in'?
 
Ah - an update. (posting from a windows laptop)

I was just browsing gmail and the mouse stopped and the trackpad is not responding. The screen is still 'working' (the loading animation in firefox is spinning), but, tellingly, the airport logo is not showing any wireless networks. The keyboard still responds, but trackpad and button do not..

I'll try connecting with an ethernet cable for a bit and see how I get on...

Thanks for all your help so far, I'm the only person I know with a Mac, and I'm fairly new to them (6 months or so) so this is quite scary, haha.
 
Ok try this:
  1. Backup if possible
  2. Boot from the OS X Install Disk 1
  3. Reinstall OS X (try archive and install, but if that doesnt work do a full format)
  4. REMEMBER to click Customize to remove any unneeded apps (iLife, iWork Trial, Office Trial, etc)
  5. Let it do its thing
  6. See if the problem is still there
  7. If its not, put your stuff back on and carry on as normal :)
Remeber that a full format will loose anything you have on the disk
 
Thanks Chris. These new lockups (not really kernel panics now, just freezes requiring a power-button-reset) are happening after having clean installed mac os x with as few 'extras' as possible.

Am gonna try and run via ethernet for a bit to eliminate that issue.
 
Well I have left it running via ethernet to download OS updates. No crashes yet, but I'm not doing anything other than updates.

If it turns out it is an airport issue, is the only choice to not use Airport or get it replaced? I'll make sure the Airport software is totally up to date too.

I can't think what would be wrong with Airport though...
 
paulcapewell said:
Well I have left it running via ethernet to download OS updates. No crashes yet, but I'm not doing anything other than updates.

If it turns out it is an airport issue, is the only choice to not use Airport or get it replaced? I'll make sure the Airport software is totally up to date too.

I can't think what would be wrong with Airport though...
Click to expand...

Is the laptop only 6 months old? So I guess it's still in warranty so (if it's broken) you might as well get it fixed. It could simply be that the airport card has stopped working properly
 
Yeah :)

Well, 9 or ten.

I will take it to the Apple Store I guess. Its always so busy. I might try and find an approved Apple service place that isn't the Regent Street Apple Store.

Ugh, not looking forward to this...

(incidentally, it seems to be working fine on ethernet with the airport turned off in the menu bar...)
 
Thanks for the ethernet tip. Its working perfectly now, and about ten seconds aftr I turned on Airport to test it, kernel panic. Bummer.

Is it possible the airport card needs re-seating?

Guess I'll take her along to an Apple store asap...
 
Well, after a week or two of using an ethernet cable, I thought I'd try turning on the Airport again. And - bam - kernel panic.

Here's the log.

Sat Nov 11 17:57:51 2006
panic(cpu 0 caller 0x000A8800): Uncorrectable machine check: pc = 00000000006AE52C, msr = 0000000000149030, dsisr = 42000000, dar = 00000000E0081000
AsyncSrc = 0000000000000000, CoreFIR = 0000000000000000
L2FIR = 0000000000000000, BusFir = 0000000000000000

Latest stack backtrace for cpu 0:
Backtrace:
0x00095138 0x00095650 0x00026898 0x000A8800 0x000A7A90 0x000AB780
Proceeding back via exception chain:
Exception state (sv=0x34549000)
PC=0x006AE52C; MSR=0x00149030; DAR=0xE0081000; DSISR=0x42000000; LR=0x006C3078; R1=0x17853D30; XCP=0x00000008 (0x200 - Machine check)
Backtrace:
0x01EF0840 0x006C3078 0x002D0B94 0x002CFA5C 0x000A9314
Kernel loadable modules in backtrace (with dependencies):
com.apple.iokit.AppleAirPort2(405.1)@0x684000
dependency: com.apple.iokit.IONetworkingFamily(1.5.0)@0x5b1000
dependency: com.apple.iokit.IOPCIFamily(1.7)@0x45f000
Exception state (sv=0x34533280)
PC=0x00000000; MSR=0x0000D030; DAR=0x00000000; DSISR=0x00000000; LR=0x00000000; R1=0x00000000; XCP=0x00000000 (Unknown)

Kernel version:
Darwin Kernel Version 8.8.0: Fri Sep 8 17:18:57 PDT 2006; root:xnu-792.12.6.obj~1/RELEASE_PPC
*********

Where is the airport card in the iBook G4 1.42GHz? I thought it was under the RAM but it isn't. I think I can see the Airport antenna next to the RAM so it must be near, but doesn't seem accessible.

Also when restarting after a kernel panic, it boots into 'Open Firmware'. Typing 'mac-boot' shows a screen with a Finder icon and a question mark. Restarting many times makes this keep on happening and it then randomly boots into Mac OS X after many tries.

What on earth is wrong?!

Thanks in advance guys.
 
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