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kernel panics....please help!

post #1 of 11
12/13/10 at 7:32am
Thread Starter 
Hi Guys,

I'm desperate to fix my mac....it's my main work computer and it's driving me nuts!

I recently started getting problems with my mac crashing and eventually kernel panicing. I checked my internal hard drive and there were bad blocks. So i replaced my internal HD and at this point decided to upgrade from 10.5 to 10.6 OSX. I installed all my software and got working. I then started to get errors again which eventually lead to kernel panics. I decided that it was likely a software issue with the 10.6 upgrade as i use tons of plugins etc and so today i set about to go back to 10.5. I tried to boot from CD and everytime i do this i get a kernel panic. I've ran Memtest for 11 hours and it passed ok. I'm running out of ideas....please help!

My system is currently iMac 24", 3.06Ghz Intel Core Duo, 2gig RAM, OSX 10.6.5

Cheers

R
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post #2 of 11
12/13/10 at 7:33am
Thread Starter 
This is my latest Kernel panic report....


Interval Since Last Panic Report: 275429 sec
Panics Since Last Report: 4
Anonymous UUID: 3B0F8524-A454-4BB2-9714-5CE2DBB591E1

Mon Dec 13 14:41:23 2010
panic(cpu 1 caller 0x001A7BED): Kernel trap at 0x3d971373, type 14=page fault, registers:
CR0: 0x80010033, CR2: 0x00000018, CR3: 0x00e15000, CR4: 0x00000660
EAX: 0x00000000, EBX: 0x00000000, ECX: 0x00000000, EDX: 0x03f2e804
CR2: 0x00000018, EBP: 0x2e6cfbc8, ESI: 0x03f1c400, EDI: 0x03f1c400
EFL: 0x00010246, EIP: 0x3d971373, CS: 0x00000008, DS: 0x044c0010
Error code: 0x00000000

Backtrace, Format - Frame : Return Address (4 potential args on stack)
0x2e6cf9d8 : 0x12b0e1 (0x4555b4 0x2e6cfa0c 0x133238 0x0)
0x2e6cfa28 : 0x1a7bed (0x45e568 0x3d971373 0xe 0x45dd24)
0x2e6cfb08 : 0x19e517 (0x2e6cfb20 0x4128780 0x2e6cfbc8 0x3d971373)
0x2e6cfb18 : 0x3d971373 (0xe 0x48 0x10 0x10)
0x2e6cfbc8 : 0x3d960540 (0x0 0x4128780 0x3f1c400 0x1)
0x2e6cfc08 : 0x2e8a5139 (0x3f1c400 0x1 0x0 0x13)
0x2e6cfc68 : 0x2e89e940 (0x3f1c400 0x2507 0x2e6cfd2c 0x3f1c400)
0x2e6cfc98 : 0x40c515 (0x3f1c400 0x46aaa68 0x46aaa68 0x0)
0x2e6cfce8 : 0x437535 (0x3f1c400 0x46aaa68 0x46aaa68 0x0)
0x2e6cfd48 : 0x18c8aa (0x3f1c400 0x46aaa68 0x0 0x0)
0x2e6cfdb8 : 0x12d165 (0x3fccd78 0x44d6c90 0x2e6cfdf8 0x11ee04)
0x2e6cfdf8 : 0x126247 (0x3fccd00 0x3da04d8 0x46704b0 0x0)
0x2e6cff08 : 0x196afc (0x2e6cff44 0x0 0x0 0x0)
0x2e6cffc8 : 0x19eb34 (0x460ebe0 0x0 0x19e2fb 0x460ebe0)
No mapping exists for frame pointer
Backtrace terminated-invalid frame pointer 0xbffff378
Kernel loadable modules in backtrace (with dependencies):
com.apple.NVDAResman(5.1.6)@0x3d95d000->0x3db89fff
dependency: com.apple.iokit.IONDRVSupport(1.5)@0x2e6ee000
dependency: com.apple.iokit.IOPCIFamily(2.4)@0x2e744000
dependency: com.apple.iokit.IOGraphicsFamily(1.5)@0x2e896000
com.apple.iokit.IOGraphicsFamily(1.5)@0x2e896000->0x2e8b1fff
dependency: com.apple.iokit.IOPCIFamily(2.4)@0x2e744000

BSD process name corresponding to current thread: WindowServer

Mac OS version:
9A581

Kernel version:
Darwin Kernel Version 9.0.0: Tue Oct 9 21:35:55 PDT 2007; root:xnu-1228~1/RELEASE_I386
System model name: iMac8,1 (Mac-F227BEC8)
Model: iMac8,1, BootROM IM81.00C1.B00, 2 processors, Intel Core 2 Duo, 3.06 GHz, 2 GB, SMC 1.30f1
Graphics: NVIDIA GeForce 8800 GS, NVIDIA GeForce 8800 GS, PCIe, 512 MB
Memory Module: global_name
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8C), Broadcom BCM43xx 1.0 (5.10.131.36.1)
Bluetooth: Version 2.3.8f7, 2 service, 12 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: WDC WD10EARS-00Y5B1, 931.51 GB
Parallel ATA Device: MATSHITADVD-R UJ-875, 7.5 GB
USB Device: Built-in iSight, 0x05ac (Apple Inc.), 0x8502, 0xfd400000
USB Device: Keyboard Hub, 0x05ac (Apple Inc.), 0x1006, 0xfa200000
USB Device: Apple Optical USB Mouse, 0x05ac (Apple Inc.), 0x0304, 0xfa230000
USB Device: Apple Keyboard, 0x05ac (Apple Inc.), 0x0221, 0xfa220000
USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0x5d100000
USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x1a100000
USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x820f, 0x1a110000
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post #3 of 11
12/13/10 at 8:50am
I think you've done all you can. The only other suggestion I'd make is disconnecting any peripherals you might have, but that's a long shot, even assuming you've got any. The other long shot is removing and reseating your RAM. The sad fact is you've very likely got a hardware failure on your hands and your iMac will be headed back to Apple.
Please don't be insane.
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Please don't be insane.
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post #4 of 11
12/13/10 at 8:56am
Thread Starter 
This is out of warranty so i'm really hoping its a ram issue and not the mother board. I guess the next step is to try some new ram on it before assuming the motherboard's had it? Could it still be the ram even with memtest not detecting anything?

Cheers

R
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post #5 of 11
12/13/10 at 9:03am
Thread Starter 
It's prob worth mentioning that the computer seems to work fine just browsing the web. Its only when i use it for real work (pro tools) or trying to boot from cd that i'm having these problems.

Cheers

R
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post #6 of 11
12/13/10 at 9:26am
Quote:
Originally Posted by amplisound View Post

It's prob worth mentioning that the computer seems to work fine just browsing the web. Its only when i use it for real work (pro tools) or trying to boot from cd that i'm having these problems.

Cheers

R

The panic on booting from the system install DVD is what clinches a hardware failure for me. You could try new RAM, but I'd try removing and reseating the RAM you've got first. I'd bet that even web browsing would cause it to kernel panic eventually.
Please don't be insane.
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post #7 of 11
12/13/10 at 9:53am
Thread Starter 
But could it still be a RAM issue even if memtest is giving it the all clear?
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post #8 of 11
12/13/10 at 10:24am
None of these tests are 100%, so yes, it could be. But as I said, a long shot. Try what I suggested about reseating the RAM. That test costs you nothing but a little time.
Please don't be insane.
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post #9 of 11
12/13/10 at 10:28am
Quote:
Originally Posted by amplisound View Post

But could it still be a RAM issue even if memtest is giving it the all clear?

Sure it COULD still be RAM.. but...
Your problems sound like exactly the same way my old G5 behaved ... it ended up needing a new logic board.
My thoughts... when it's not working to hard, it seems to be OK... when you start taxing it a bit, one or more bad capacitors on the logic board get hot and quit working correctly causing your problems. In MY case, when the machine was opened up (and I knew what to look for), you could actually SEE two of the large capacitors were "bloated" from internal damage. (They look like AA batteries but only an inch long or so ... the bad ones were distended and looked like they were about to burst.

I certainly can't say that's what your problem is, but... your symptoms sure bear a striking resemblance to what I had.

(If it was just the RAM, I wouldn't expect to see a difference when the machine is doing simple VS complex tasks.)
From out there on the moon, international politics look so petty. You want to grab a politician by the scruff of the neck and drag him a quarter of a million miles out and say, "Look at that!" -...
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From out there on the moon, international politics look so petty. You want to grab a politician by the scruff of the neck and drag him a quarter of a million miles out and say, "Look at that!" -...
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post #10 of 11
12/13/10 at 10:53am
It looks like a video card problem. The NVDAResman refers to the NVidia driver.

Other people have had similar issues:

http://discussions.apple.com/message...sageID=8648334
http://forums.macrumors.com/showthread.php?t=934814

You can check if it's GPU related by running any 3D software for a while and see if it locks up. The OpenGL test in Cinebench for example. It might only happen if it gets hot though.

If it turns out to be this that's the problem, there's not a whole lot you can do with your machine as you'd have to pay for a repair and they'd put the same board in, which might do a similar thing.
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post #11 of 11
12/13/10 at 11:25am
To which I would add, if the iMac needs repair, seek out an independent shop. They'd probably change half or less than Apple to do the deed.
Please don't be insane.
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