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Analyze a Kernel Panic for Me


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Analyze a Kernel Panic for Me
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agent302
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Join Date: Jun 2004
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2007-07-30, 17:06

To preface, this is all occurring on a 12" Powerbook with a 1.5 GHz G4, 1.25 GB of RAM, running Mac OS X 10.4.10

I was surfing around on the net while watching TV when a kernel panic just struck.

I then restarted the computer, waited for a while, and the login screen never came. However, I could still hear the hard drive spinning. I tried to restart again, same result.

Seeing as how it's hard to access files on a hard drive when you can't see the monitor, I decided to plug my Powerbook into my parent's iMac and see if it would work under Firewire Target Disk mode. The hard drive appears to be working fine. As a precaution, I checked it over with DiskWarrior, and there doesn't appear to be a drive issue at all. I am currently, as even more of a precaution, in the process of backing everything up from my Powerbook onto the iMac, just in case.

The weird thing, though, is that while the monitor doesn't turn on during a normal boot, it does come on during Target Disk Mode, with a firewire symbol bouncing around the screen as is expected.

I then delved in Console.app to find the panic log. Problem is, I really have no idea what it is telling me. I presume that, based on the symptoms the laptop has displayed, and the small amount of text I can decipher from the log, something must be going wrong with the graphics card (which I think is a GeForceGo 5200).

Here's the panic log:
Quote:
Mon Jul 30 14:27:43 2007


Unresolved kernel trap(cpu 0): 0x300 - Data access DAR=0x000000004A06234E PC=0x0000000000A21D3C
Latest crash info for cpu 0:
Exception state (sv=0x331C4C80)
PC=0x00A21D3C; MSR=0x0000B030; DAR=0x4A06234E; DSISR=0x40000000; LR=0x00A21D24; R1=0x1D06B7A0; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x002D9B6C 0x00A2D340 0x00A2CDC0 0x00A28744 0x00A289D0 0x00A0ACDC
0x002E9200 0x002EB0CC 0x0008C06C 0x0002921C 0x000233F8 0x000ABCAC 0x00000000
Kernel loadable modules in backtrace (with dependencies):
com.apple.GeForce(4.1.8)@0x9ff000
dependency: com.apple.iokit.IOPCIFamily(1.7)@0x469000
dependency: com.apple.iokit.IOGraphicsFamily(1.4.1)@0x687000
dependency: com.apple.iokit.IONDRVSupport(1.4.1)@0x6ab000
dependency: com.apple.NVDAResman(4.1.8)@0x6c1000
Proceeding back via exception chain:
Exception state (sv=0x331C4C80)
previously dumped as "Latest" state. skipping...
Exception state (sv=0x3330D500)
PC=0x9000B348; MSR=0x0200F030; DAR=0xB858B000; DSISR=0x42000000; LR=0x9000B29C; R1=0xBFFFE900; XCP=0x00000030 (0xC00 - System call)

Kernel version:
Darwin Kernel Version 8.10.0: Wed May 23 16:50:59 PDT 2007; root:xnu-792.21.3~1/RELEASE_PPC
panic(cpu 0 caller 0xFFFF0003): 0x300 - Data access
Latest stack backtrace for cpu 0:
Backtrace:
0x000952D8 0x000957F0 0x00026898 0x000A8004 0x000AB980
Proceeding back via exception chain:
Exception state (sv=0x331C4C80)
PC=0x00A21D3C; MSR=0x0000B030; DAR=0x4A06234E; DSISR=0x40000000; LR=0x00A21D24; R1=0x1D06B7A0; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x002D9B6C 0x00A2D340 0x00A2CDC0 0x00A28744 0x00A289D0 0x00A0ACDC
0x002E9200 0x002EB0CC 0x0008C06C 0x0002921C 0x000233F8 0x000ABCAC 0x00000000
Kernel loadable modules in backtrace (with dependencies):
com.apple.GeForce(4.1.8)@0x9ff000
dependency: com.apple.iokit.IOPCIFamily(1.7)@0x469000
dependency: com.apple.iokit.IOGraphicsFamily(1.4.1)@0x687000
dependency: com.apple.iokit.IONDRVSupport(1.4.1)@0x6ab000
dependency: com.apple.NVDAResman(4.1.8)@0x6c1000
Exception state (sv=0x3330D500)
PC=0x9000B348; MSR=0x0200F030; DAR=0xB858B000; DSISR=0x42000000; LR=0x9000B29C; R1=0xBFFFE900; XCP=0x0000000
*********
I'll probably try again once I finish copying files (which could be awhile since there's about 50 GB of data). Any help is greatly appreciated. Thanks!

Edit:

After running in Target Disk Mode for a while, I started the computer back up again. It made it to the login screen, and then another kernel panic. I then tried another time 3 hours later, and was able to use it for about 10 minutes before I got another kernel panic.

My guess is something with the logic board, which kicks in when the computer heats up a little bit. Taking it to an Apple Store to have checked it tomorrow, but if anyone wants to chime in with a conversation, I'd appreciate it.

Last edited by agent302 : 2007-07-30 at 22:28.
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_Ω_
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2007-07-31, 05:43

Not being an expert in the least, but this is what jumps out at me

com.apple.GeForce(4.1.8)@0x9ff000

Graphics card.
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chucker
 
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2007-07-31, 05:48

Yep. Did this occur only once? If so, I wouldn't worry about it much. If it's repetitive, though, you need to have a technician look at it, which probably effectively means a motherboard replacement.
  quote
agent302
"I'm learnding!"
 
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2007-07-31, 11:33

Yeah, it happened twice more, fairly quickly after start up. Haven't had a chance to look at the log file for those 2 panics, but I suspect the same thing.

As a consolation, there's no sales tax on computer purchases in North Carolina this weekend!
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PB PM
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2007-07-31, 12:24

From the looks of things the graphics card is the source of the problem, which means you most likely will need a new logicboard.
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