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Level 1

0 points

Mac OS X 10.6.3

I just updated to 10.6.3 using the System Update on my first-generation MacBook Pro. I'm now getting a kernel panic at startup, and cannot boot the system.

Specifically, I'm seeing:

panic(cpu 0 caller 0x2a96f6): "Version mis-match between Kernel and CPU PM"@/SourceCache/xnu/xnu-1504.3.12/osfmk/i386/pmCPU.c:720

I've tried cutting power, and attempting to start again, reset the PRAM/PMU, removed the battery and booted off AC power only, attempted boot into safe mode, and attempted boot into single-user mode. None of these operations have done anything. Additionally, I CAN boot into target disk mode, and have run Disk Utility on a second machine to repair volume and disk permissions.

Any thoughts on resolving this? Is it possible to downgrade, or am I stuck having to make a cloned disk, installing 10.6.2, and then transferring my files and settings back?

MacBook Pro, Mac OS X (10.6.2), MacBookPro1,1

Posted on Mar 29, 2010 10:44 AM

Best reply

LCee

Level 1

69 points

Posted on Mar 29, 2010 10:47 AM

I would try the 10.6.3 combo. Seems to me your first setup was crippled and lacking somehow.

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39 replies

Dogcow-Moof

Level 8

36,221 points

Mar 31, 2010 10:28 AM in response to iByte

iByte wrote:
Same here. Have been trying to help my aunt.

System goes through a combination of kernal panic attacks. Power off/on..then a series of restarts.
Tried booting from DVD, but does not work as well.

If your system won't boot from DVD, there may be something larger wrong with your system.

However, is it a newer machine, released since Snow Leopard came out?

If so, you will likely need to boot from the disc that originally came with your machine, not from a retail Snow Leopard disc as the latter won't have the drivers required to boot your newer machine.

R C-R

Level 6

17,782 points

Mar 31, 2010 10:42 AM in response to robbanks78

robbanks78 & iByte both mentioned that their Macs would not boot from the Snow Leopard install DVD after applying the update. For them & any others with the same experience, note that the DVD in no way uses any part of the updated OS on the internal drive during the boot process, so the update *cannot be* the direct cause of this failure.

One possible cause is corrupted hardware settings stored in parameter ram ("PRAM") on the affected Mac. For this specific cause, Mac OS X 10.6 Help: Resetting PRAM should help.

Another possibility is a hardware issue. Using Apple Hardware Test will often detect such things.

R C-R

Level 6

17,782 points

Mar 31, 2010 12:10 PM in response to cldjr

cldjr wrote:
I don't know what to think about this update 10.6.3 Snow Leopard.
It's look like too many users have trouble with it.

How many is too many? The release of every single Mac OS X update has & probably always will generate many dozens of posts in Discussions about problems after installing it. But there are millions of Mac OS X users so this by itself means almost nothing, especially since users with no interest in getting or giving help have no reason to post anything here at all.

IOW, it is about as useful as going to a clinic to decide how likely you are to get sick. And like with that comparison, much more useful is following mainstream news: these days everything of major significance to computer users gets mentioned not just in the usual computer-oriented sources but also on the evening news, especially if involves Apple. In this respect, no news is good news -- the media would ponce on anything suggesting Apple incompetence in a heartbeat.

iByte

Level 1

0 points

Mar 31, 2010 5:48 PM in response to R C-R

It may be hardware. It just seems a coincidence that after the update installed that the panic attacks, etc began and when trying to boot from the DVD it starts but says the system needs to restart.

That's as far as it gets.

Trying to boot into safe mode is the same. I think the DVD drive is working because you can hear the DVD starting to boot up. I was trying to get to the system utilities, but doesn't get that far.

swidnikk

Level 1

0 points

Mar 31, 2010 8:24 PM in response to iByte

I just ran into this issue as well... Apple must not have tested this fully before pushing it out...

cldjr

Level 1

85 points

Mar 31, 2010 8:39 PM in response to R C-R

Your comment sound like complaining against the issues users may got with Apple products is an offense to the company.
I don't share this point of view. Even it is true that Apple have made some very good products, I use Apple computers since MacFx and System 6, they still people who wants make profits with choices who are not always to the benefits of the users.

R C-R

Level 6

17,782 points

Mar 31, 2010 9:28 PM in response to cldjr

cldjr wrote:
Your comment sound like complaining against the issues users may got with Apple products is an offense to the company.

It was meant as a comment about an offense to common sense. Anyone can verify for themselves by browsing through the old forum posts that about the same fraction of the installed user base declares *every OS X update Apple has ever released* as the worst one ever, inadequately tested, a sell out to profits at the expense of users, & all the other comments you will find about this one.

IOW, this is nothing new.

Vinko

Level 3

955 points

Apr 1, 2010 8:24 PM in response to Matthew Bain

I am having the same kernel panic.

Upgraded to 10.6.3 then for no apparent reason I encountered a kernel panic. Tried to reboot and received a core dump. Tried booting from Snow Leopard disc but it could not, it. Keep ejecting the disc. I then tried booting from the DVD that came with my MBP 15" (late 2009) and encounters the kernel panic once again.

Running out of options.

Love to hear any other suggestions.

Message was edited by: Vinko

giddy

Level 1

0 points

Apr 1, 2010 11:03 PM in response to Vinko

I had the same problem. To get around it personally I mounted my hard disk on another Mac using target disk mode (connect using firewire cable, restart holding T) and copying everything off, formatting and then could reinstall.

Mac OS X 10.6.3