OS-X 10.5.8 Shutdown Cause -4?

My old white MacBook has started to shutdown unexpectedly. The system log is showing a shutdown cause of -4. I suspect that it's overheating. Can anyone confirm that -4 is a thermal panic, and if not, what does it mean? I've done some digging but can't find an official list of error codes anywhere.
TIA

Yeah, I'm not sure if Shutdown codes are the same as those, but if they are we might ferret out the problem...
One way to test is to Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, Test for problem in Safe Mode...
PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive
Reboot, test again.
If it only does it in Regular Boot, then it could be some hardware problem like Video card, (Quartz is turned off in Safe Mode), or Airport, or some USB or Firewire device, or 3rd party add-on, Check System Preferences>Accounts (Users & Groups in later OSX versions)>Login Items window to see if it or something relevant is listed. Or an errant process eating up RAM.
Check the System Preferences>Other Row, for 3rd party Pref Panes.
Also look in these if they exist, some are invisible...
/private/var/run/StartupItems
/Library/StartupItems
/System/Library/StartupItems
/System/Library/LaunchDaemons
/Library/LaunchDaemons

Similar Messages

"Previous Shutdown Cause" codes?

Hi -- My MacBook has been experiencing some problems.. intermittently shutting itself down, and getting worse & worse until I couldn't even start the laptop up. I believe the problem was a faulty memory module (3rd party, installed myself) -- after replacing the original Apple memory I haven't experienced any problems.
In the system.log, I see this message after a system failure & crash:
Jul 8 18:46:51 localhost kernel[0]: Previous Shutdown Cause: -82
Does anyone know what this code means?
thanks,
Jon
MacBook Mac OS X (10.4.7) (previously 2G ram)

Sorry to hear that. Hopefully they will just give you a new machine.
Be sure to do the following:
1.) Try to exhibit the problem. Mine shut down three times in the store. The last time it shut off at home, I left it alone, boxed it up and took it in to the genius bar. We booted and viola! It shut down within a couple minutes. Then it shut off during boot. Then we powered it back on and it booted but shutoff within a few minutes.
2.) Open console.app and go to /var/logs/system.log[number]
Click on each one of these logs, hit control-R to load the whole log, and filter on "Previous" for Previous Shutdown Cause. This will show the genius exactly when the problem started and how often.
3.) Be FIRM (not argumentative) and insist on having a new macine. Tell them you are very disappointed in having a brand new machine fail. Talk to a manager if necessary. I didn't have to ask twice. Apple knows this is a problem (unofficially), though the knowledge may vary from Apple Store to Apple Store and genius to genius, BUT it is known and you can reference the vast number complaining on this very board.
Good Luck!!!
BTW, my replacement week 24 machine have been running fine since I received it July 6. No problems yet.

Previous Shutdown Cause: 3

Does anyone have any clue what this means? I don't understand computer-speak. My MacBook shuts down unexpectedly if it is left inactive for more than a couple minutes--sometimes the fan is running, most of the time it's not. Sometimes there are active applications, sometimes there aren't. Sometimes it's plugged into the adapter, sometimes it's on battery. Nothing is consistent except the fact that I can't walk away for 2 minutes to answer the phone or get a snack without returning to a shutdown computer.
Help!
Thanks.
Here's what the system console says when I search for the term shutdown:
Sep 5 14:30:56 localhost kernel[0]: Previous Shutdown Cause: 3
Sep 5 15:13:18 localhost kernel[0]: Previous Shutdown Cause: 3
Sep 6 09:16:26 localhost kernel[0]: Previous Shutdown Cause: 3
Sep 6 09:17:58 localhost kernel[0]: Previous Shutdown Cause: 3
Sep 6 12:42:08 localhost kernel[0]: Previous Shutdown Cause: 3
Here are my specs:
Model Name: Mac
Model Identifier: MacBook2,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.16 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache (per processor): 4 MB
Memory: 1 GB
Bus Speed: 667 MHz
Boot ROM Version: MB21.00A5.B06
SMC Version: 1.17f0
My Macbook was purchased in mid August 2007, and it runs 10.4.10, so the earlier firmware problems shouldn't be the problem. I would call Apple Support, but I'm in the Middle East, so wherever I call will be long distance. I'm trying to resolve this problem independently. It will be a tremendous inconvenience if I have to travel to Rosh Haayyin (near Tel Aviv) to take it to an authorized repair location...or worse ship it back to the U.S.

If you can get it to run long enough, try running your hardware tester. It sounds like it may be going into 'thermal shutdown.' You may have a thermal sensor acting up.
-Bmer
Mac Owners Support Group
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What is shutdown cause -2?

My MacBook Pro intermittently shuts down by itself. When I look inthe Console I see Shutdown Cause: -2
Can someone tell me what that is?

Those codes are undocumented. This may help:
Intel-based Macs: Resetting the System Management Controller (SMC)

First G5 Quad says AppleSMU System Shutdown cause =3, now Mac Pro says -128 as a shutdown cause.

A weird error I can't seem to troubleshoot easily through research has happened to my 2010 Mac Pro. Its called AppleSMU -- Shutdown cause = -128 = Does anyone have an idea what -128 it? I know what -1, -2, -3, -110(Power supply) all mean, but -128?
To further troubleshoot the problem I rebooted in safe mode and everything seems to be working normally. My Mac Pro's temps are within operating range as well as the PSU. Can someone shed some light on what -128 means? Does anyone have a list of Apple shutdown codes with their meanings? I am going to attempt to run ASD and AHT tonight to see what the problem could be though.
Thanks.
Its like my G5 is running without problems, where as my Mac Pro(just by not using it for almost a week) is now giving me a shutdown cause of -128.

Wow... I found the problem, totally unexpected.
It was a misbehaving UPS unit. Not anything with the computer at all !!
It had never happened while I was around to see it before. With the computer plugged directly into the wall, no more recurring rebooting.
I think it's a worn out battery in my UPS. Now, if I could only get all those computer diognostic hours of my life back.

Kernel shutdown cause: 0

My Mac Mini has shutdown suddenly a couple times lately, and both times the logs show
4/21/11 9:25:37 AM kernel Previous Shutdown Cause: 0
I can't find a list of shutdown causes. Can anyone point me to a list of what those numbers mean? Or, can anyone explain what cause #0 is?
I haven't seen anything else in the log that suggests what happened - the only other messages around the time are Apache messages about a syntax error in my vhosts file and a missing DocumentRoot. Those messages are also firing in much older logs when these shutdowns didn't happen, so I don't think they're related. I fixed them anyway though, and we'll see what happens.
Your help is appreciated!
Libby

I've nothing against workarounds, but don't you believe it would be far most great to actually know these Previous Shutdown cause values?
All over the web, we see people asking "What does Previous Shutdown cause x means?" and other people simply answer "Is the computer heat?" or "Try to reset the PRAM", etc. This is NOT the right way to resolve the problem efficiently! The good way to do it is to understand these "Previous Shutdown Cause" values! It should not be that hard, no?

What does this mean? Aug 26 12:30:02 Tegans-MacBook-Pro kernel[0] Debug : Previous Shutdown Cause: -60

My MacBook has been running really slowly lately so I followed username Link's advice to open the terminal and see what message comes up after I input the code that he gave. The message that came up was : Aug 26 12:30:02 Tegans-MacBook-Pro kernel[0] <Debug>: Previous Shutdown Cause: -60
What does this mean?
I've deleted all large files and apps that were taking up room. My computer is down to the bare minimum now.
Any help would be appreciated.

Have you already verified/repaired the hard disk with Disk Utility? If not, do so.

Previous Shutdown Cause: 0

I'm investigating on my Mac Pro2,1 randomly shutdown, and I discovered the concerning log in Console: "Previous Shutdown Cause: 0"
Does anybody know what this "Cause: 0" means??

The most frequent cause of uncontrolled power-off (not controlled shutdown) is overheating.

Previous shutdown cause

Ever since i tried an old ubuntu live cd with boot camp today, my previous shutdown cause on startup has been listed as 3, it has always been 0 before this.
One thing to note as the ubuntu live cd locked up on restart, so I had to power off, but after several reboots/power offs it still sais:
Jul 5 12:44:16 localhost kernel[0]: Previous Shutdown Cause: 3
when booting up?
Does anyone have a table of what the different shutdown causes are? (I'm not noticing any difference in how the system is behaving)

I don't have an answer to your question, but do have another instance of it; and I'm still in shock as my MacBook just crashed!
I have just experienced the "black veil of death"--an opaque black screen descended over my computer and said I had to re-start. When I checked the system log I too had the message:
localhost kernel[0]: Previous Shutdown Cause: 3
Can anyone shed any light on the possible cause of this previously unknown event (an OS-X system crash)?! James

Kernel: Previous Shutdown Cause: -128

i have macbook pro OS X10.7 2011 15´
it goes off unexpectedly after a period of time ( usually 30m) i look at the console and look ''the word shut'' up
and i found this . which i have no idea what it means.
6/20/14 1:15:31.000 a.m. kernel: Previous Shutdown Cause: 5
6/20/14 1:44:46.000 a.m. kernel: Previous Shutdown Cause: -128
6/20/14 2:14:51.000 a.m. kernel: Previous Shutdown Cause: -128
6/20/14 2:19:04.498 a.m. shutdown: halt by TemochePeralta:
does any one know what this means ? please help !

Did you get a resolution ? My 1 month old iMac started to have the same issue. Shuts down randomly and I can't figure out why. I've noticed so far that it has done so when I'm not using it. For example I turned it on, work on it for few minutes and it works fine, I walk away for few minutes come back and it's off. And no it's not in standby mode it is completely off. Same thing happened to me few times already. I could be using it for few hours leave it and then when I come back minutes or hours after it's off. I'm getting the Previous Shutdown Cause: -128 code as well... I'm going to speak to apple support tonight and see what can they tell me about it.

Shutdown cause:5 and sleep cause:5.anyone knows whats this issue?

14/03/14 17:46:42,000 kernel[0]: Previous Shutdown Cause: 5
14/03/14 23:29:20,000 kernel[0]: Previous Shutdown Cause: 5
14/03/14 23:52:26,595 shutdown[8658]: reboot by _netbios:
14/03/14 23:52:26,596 shutdown[8658]: SHUTDOWN_TIME: 1394833946 595625
15/03/14 16:51:23,869 com.apple.launchd[1]: *** Shutdown logging is enabled. ***
15/03/14 16:51:56,000 kernel[0]: Previous Shutdown Cause: 5
15/03/14 16:53:16,333 identityservicesd[206]: Quit - notifying about shutdown
15/03/14 16:53:16,334 imagent[198]: Quit - notifying about shutdown
15/03/14 16:57:23,752 reboot[709]: SHUTDOWN_TIME: 1394895443 752210
15/03/14 16:57:38,977 com.apple.launchd[1]: *** Shutdown logging is enabled. ***
15/03/14 16:58:32,000 kernel[0]: Previous Shutdown Cause: 5
17/03/14 12:32:27,000 kernel[0]: Previous Shutdown Cause: 5
13/03/14 23:08:03,000 kernel[0]: Previous Sleep Cause: 5
14/03/14 00:03:02,000 kernel[0]: Previous Sleep Cause: 5
14/03/14 03:52:41,000 kernel[0]: Previous Sleep Cause: 5
14/03/14 17:46:42,000 kernel[0]: Previous Sleep Cause: 5
14/03/14 18:29:44,000 kernel[0]: Previous Sleep Cause: 5
14/03/14 21:47:20,000 kernel[0]: Previous Sleep Cause: 5
14/03/14 23:29:20,000 kernel[0]: Previous Sleep Cause: 5
15/03/14 23:03:19,000 kernel[0]: Previous Sleep Cause: 5
16/03/14 12:13:32,000 kernel[0]: Previous Sleep Cause: 5
16/03/14 14:22:13,000 kernel[0]: Previous Sleep Cause: 5
16/03/14 19:17:31,000 kernel[0]: Previous Sleep Cause: 5
16/03/14 19:45:56,000 kernel[0]: Previous Sleep Cause: 5
16/03/14 23:09:00,000 kernel[0]: Previous Sleep Cause: 5
17/03/14 01:55:30,000 kernel[0]: Previous Sleep Cause: 5
17/03/14 12:32:27,000 kernel[0]: Previous Sleep Cause: 5
17/03/14 15:30:20,000 kernel[0]: Previous Sleep Cause: 5
17/03/14 16:17:43,000 kernel[0]: Previous Sleep Cause: 5

A shutdown cause of 5 is usually an OS-initiated shutdown.
It results either from pressing the power button and then clicking 'Shutdown', or selecting Shutdown from the Apple menu.
Shut your computer down normally, then power back up and look in Console.
0 and 2 can indicate power loss, usually anything that's negative, like -128 or -60 is abnormal.
If it's heat or battery related, you'll have a different code. The fact that it's showing up as 5 makes me wonder if the computer is experiencing a sudden loss of power...is it a laptop?
A disclaimer: the codes differ slightly between models, I'm speaking from my experience, but Apple doesn't publish the meaning of the codes, so there's not a good way to be certain.

Kernel: previous shutdown cause: -60

My MacBook Pro stopped and started starting up randomly. I went and looked at the console and it said kernel: Previous Shutdown Cause: -60. Please help me I want to make sure this isn't serious.

So I called Apple. Turns out this can sometimes happen (Kernel errors). So they walked me through resetting my kernel and from there they said to just watch it and if it happens again then they will walk me through running some more tests on it.

Previous Shutdown Cause: -62

Does anyone know what the error code "-62" means? Unfortunately the list of published error codes at http://support.apple.com/kb/HT1618 doesn't have it.
My Intel Xserve spontaneously reboots when I try to encode 4 videos at once with Podcast Producer / Xgrid. It used to do that when encoding 1 or 2 videos, until I increased kern.maxnbuf and kern.maxvnodes. I got the idea from:
http://lists.apple.com/archives/Macos-x-server/2007/Mar/msg00102.html
... they mention decreasing this value, but that made things worse for me. The server is a quadcore Intel with 12GB of RAM. When 3 videos are encoding, there is almost 7GB of free physical memory, so I don't see how adding a fourth would matter. After the spontaneous reboot, I see this in my logs:
Oct 20 14:15:22 localhost kernel[0]: npvhash=4095
Oct 20 14:15:23 localhost kernel[0]: Previous Shutdown Cause: -62
Oct 20 14:15:31 localhost watchdogtimerd[63]: Automatic reboot timer enabled.
I've increased it more, but it would be great to know what -62 means, how it relates to maxnbuf & maxvnodes, and why it causes a spontaneous reboot.
Thanks!

I see something pretty weird in my AppleFileServiceAccess.log file at the time of the crash:
IP yyy.yy.yyy.yy - - [08/Dec/2008:11:33:40 -0700] "Login someuser" 0 0 0
IP yyy.yy.yyy.yy - - [08/Dec/2008:11:33:40 -0700] "CreateFile .dat0bf1.003" 0 0 0
IP yyy.yy.yyy.yy - - [08/Dec/2008:11:33:41 -0700] "OpenFork .dat0bf1.003" 0 0 0
IP yyy.yy.yyy.yy - - [08/Dec/2008:11:33:41 -0700] "Delete .phd-write-to-home-to-check-for-nfs-connection-file" 0 0 0
IP yyy.yy.yyy.yy - - [08/Dec/2008:11:33:41 -0700] "OpenFork .DS_Store" 0 0 0
IP yyy.yy.yyy.yy - - [08/Dec/2008:11:33:41 -0700] "OpenFork FileSyncAgent_key.pub" 0 0 0
IP yyy.yy.yyy.yy - - [08/Dec/2008:11:33:41 -0700] "OpenFork .DS_Store" 0 0 0
IP yyy.yy.yyy.yy - - [08/Dec/2008:11:33:41 -0700] "OpenFork FileSyncAgent_key.pub" 0 0 0
IP yyy.yy.yyy.yy - - [08/Dec/2008:11:33:41 -0700] "OpenFork FileSyncAgent_key" 0 0 0
IP yyy.yy.yyy.yy - - [08/Dec/2008:11:33:41 -0700] "OpenFork FileSyncAgent_key.pub" 0 0 0
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^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@** - - [08/Dec/2008:11:38:01 -0700] "Mounted Volume disk0" 0 0 0
** - - [08/Dec/2008:11:38:01 -0700] "Mounted Volume disk2" 1 0 0
"someuser" is a remote user with a mobile home directory.

Meaning of "AppleSMU -- shutdown cause = 1" (or = 2) just after bootup?

I recently had the PSU and the Logic Board replaced (two tries to get it right) for the sudden shutdown/ defective capacitor issue. Everything, fingers crossed, seems to be functioning properly, at least, so far. But, now that I'm completely paranoid about this issue, I've noticed log entries "AppleSMU -- shutdown cause = 1" or "AppleSMU -- shutdown cause = 2" (at least, not the dreaded = -110) in the log +just after+ bootup. I know these are often related to the PSU issue and, *since my shutdowns have been normal*, I don't understand why they are appearing or what they mean.
Can anyone please shed some light on this. Thanks.

Indeed I did misread, WZZZ.
Nevertheless many of the same things apply.
The iMac G5 runs "hot" with its HD, too. THis is one reason why I've always looked for HD's rated to 60ºC for iMacs rather than the once more common 55ºC (most of the iMac G5 ALS models at least came with original drives rated to 60ºC, I guess for this reason).
HD temps have always worried me a bit in my own imac G5, too, but, as with you, I find that the fans (the base speed on my own is 2300 rpm) only really begin to increase much when the HD reaches about 53 or 54ºC. At temperatures below this they simply sit on the baseline. At 58ºC however they are running at 5000 RPM or more until they bring the temperature down. I've never seen the HD actually reach its rated 60ºC, (I use hardware monitor to measure such things, which lets me save a graph over 7 day periods of use) but it can get closer than I like, and, of course, at 60 degrees HD life expectancy isn't what it is at 40ºC. That said, I've never had an HD fail in my iMac G5, purchased when the ALS model first came out, either.
So, again, I'd say at 50ºC your iMac HD fan speed is operating "normally", in terms of the computer's basic settings and limitations, even though it is a bit toastier than I'd like. In reality the HD in these things doesn't stay below 50ºC for long anyway as long as they are running.
Cheers
Rod

SMU shutdown: cause = 2 /BootX

I'm not finding what this means. An Apple guy told me that cause 1 is a power outage... so now I'm trying to see what 2 means.
I've installed a new system on a partition, but I want to try replacing the BootX file in the old file as per a previous post.
I can't seem to unlock the file even though I've given myself root control (in the user startup on the partition)
I'm in single user mode and trying some stuff there, but does anyone know of a way to replace the BootX file via single-user-mode? Or replace?

Previous post is here.
What context are you seeing the 2 in? Is "SMU shutdown cause = 2 /BootX" the exact error you're getting?
Do you mean that you can't unlock /System/Library/CoreServices/BootX on the damaged partition?
So you are booting from the new partition into single-user mode, right? I don't think there is any particular advantage to doing this. You could as well use Terminal from the new partition which would also be safer.
If you boot on the new partition, can you mount the damaged partition? If so, use Terminal:
sudo chflags nouchg "/Volumes/<damaged>/System/Library/CoreServices/BootX"
Enter password at prompt (password will not appear on screen).
There will be no response (except a new prompt) if this succeeds.
(I have the sense you know this stuff but just in case.)
sudo rm "/Volumes/<damaged>/System/Library/CoreServices/BootX"
sudo cp -p "/path/to/replacement/BootX" "/Volumes/<damaged>/System/Library/CoreServices/"
ls -lo "/Volumes/<damaged>/System/Library/CoreServices/BootX"
Check that this gets you something like this:
-rw-r--r-- 1 root wheel uchg 174276 Sep 26 2007 /Volumes/<damaged>/System/Library/CoreServices/BootX
The number "174276" and the date may be different but the rest should be the same. If you do not see "root" or you do not see "wheel":
sudo chown root:wheel "/Volumes/<damaged>/System/Library/CoreServices/BootX"
If you do not see "-rw-r--r--":
sudo chmod 644 "/Volumes/<damaged>/System/Library/CoreServices/BootX"
If you do not see "uchg":
sudo chflags uchg "/Volumes/<damaged>/System/Library/CoreServices/BootX"
- cfr

OS-X 10.5.8 Shutdown Cause -4?

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