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previous shutdown cause:5

What do the following log messages mean?


6/15/11 9:58:19 AM kernel Previous Shutdown Cause: 5

and

6/19/11 3:24:32 PM kernel Previous Shutdown Cause: 0


I suspect one of these messages is related to spontaneous shutdown of the machine.


System hardware:

Model Name: iMac

Model Identifier: iMac7,1

Processor Name: Intel Core 2 Duo

Processor Speed: 2.4 GHz

Number Of Processors: 1

Total Number Of Cores: 2

L2 Cache: 4 MB

Memory: 2 GB

Bus Speed: 800 MHz

Boot ROM Version: IM71.007A.B03

SMC Version (system): 1.20f4


MikeC

iMac, Mac OS X (10.6.7)

Posted on Jun 19, 2011 5:07 PM

Reply
2 replies

Jun 19, 2011 7:29 PM in response to mdcollins

5 is a shutdown from the menu. Not completely certain, and can't find exactly what it means, but I think the 0 is normal as well. Apple doesn't publish what these codes mean.


Could be overheating or a power supply issue. For the overheating, get iStat Pro and post the temps when you've been running a while. Also, post the fan rpms.


Do the shutdowns happen when you are doing anything in particular? Something CPU or graphics intensive like gaming?


You might try running the Hardware Test in Extended.


http://support.apple.com/kb/ht1509


Message was edited by: WZZZ

previous shutdown cause:5

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