IMac (Intel) :: Crashes Get Kernel Panics When Keep In Sleep Mode For Hours

Jun 24, 2014

Recently, tried leaving my iMac in sleep mode for hours but it keeps crashing with those Crash Reports popping up when I click to wake it.  They mention Kernel Panics.(Also, been getting Kernel Panics randomly popping up when I start up at the desktop.  This is a 2010 iMac which I purchased refurbished not quite a year ago Already emailed seller with issues, think I might just return it as seems like hard drive is going.  , as to troubleshooting before I go this route?

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Intel Mac :: Kernel Panics, Crashes And Automatic Log-offs?

Mar 25, 2012

In the last 2-3 weeks, for lack of a better phrase, my iMac has gone to ****. I get several kernel panics a day, apps crash all the time (Chrome, VLC, Quicktime, MS Word, etc.) and about a dozen times a day I am logged out of my user account with no warning. I have tried everything I can think of. I repaired permissions, I checked my disk, I disabled flash in Chrome, I uninstalled a lot of unnecessary apps and plugins. Nothing has helped. Could this be a Chrome issue? I've heard kernel panics aren't generally related to apps but it's the only program I've been consistently using during each panic/crash/log off (however, this could just be coincidence as I always have my browser open). I'm on Snow Leopard (10.6.8). Would upgrading to Lion potentially fix this? Should I reinstall the OS and start from scratch (which I would rather not have to do, as I have 500 GB of files & this would be time consuming)? This is my first Mac & while I'm generally a pretty tech savvy person, all my experience with fixing computer issues is on PCs. 

Here is my last kernel panic report: 

Interval Since Last Panic Report:  510880 sec
Panics Since Last Report:          5
Anonymous UUID:                   B0A89CB1-73F6-4844-8AA0-87B785E9D23D  
Sun Mar 25 13:55:15 2012


iMac, Mac OS X (10.6.8)

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OS X :: Kernel Panics On IMac - Boots Only To Safe Mode

Nov 12, 2010

I have a feeling I need a new motherboard to replace my graphics chip. I was playing World of Warcraft last night when the entire computer froze and a pink grid came over the computer. Could not force quit. About 10 seconds later, Kernel Panic screen and I have to hard reboot. Every time I reboot the pink grid is still there and it kernel panics, does not get past the spinning Apple logo. I was able to hold down shift and get it to safe mode, and was able to back up my files that way. I also ran the Apple hardware test, but it said no problems found. I am typing to you now in safe mode on this pink screen.

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OS X :: Three Kernel Panics Within 5 Hours

Nov 14, 2009

This morning my Macbook encountered 3 kernel panics within 5 hours. Here is the log:

Sat Nov 14 13:47:44 2009
panic(cpu 1 caller 0x2a7ac2): Kernel trap at 0x0103d710, type 14=page fault, registers:
CR0: 0x8001003b, CR2: 0xffffff91, CR3: 0x00100000, CR4: 0x00000660
EAX: 0x4fd4bcc8, EBX: 0x00000000, ECX: 0x615d0000, EDX: 0x07867000
CR2: 0xffffff91, EBP: 0x0793c300, ESI: 0x00000003, EDI: 0x00000000
EFL: 0x00010206, EIP: 0x0103d710, CS: 0x00000008, DS: 0x00000010
Error code: 0x00000002

BSD process name corresponding to current thread: kernel_task

Mac OS version: 10C540
Kernel version:
Darwin Kernel Version 10.2.0: Tue Nov 3 10:37:10 PST 2009; root:xnu-1486.2.11~1/RELEASE_I386
System model name: MacBook4,1 (Mac-F22788A9)
System uptime in nanoseconds: 3940362197226 ....

From the log, can anyone tell me what's causing the kernel panic?

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OS X :: Kernel Panics And Random Crashes On 09 Macbook Pro?

Nov 13, 2009

I got a new macbook pro a week ago. The first time I shut the machine down it experienced a kernel panic right after I selected to shut down the computer. Programs randomly crash while I am using the computer. The apple store said that crashes are most likely due to CS3 because it was not properly updated for the system, so they installed the CS3 updates. The next time I used the machine after installing CS3 updates, it experienced another kernel panic upon shut down. I would like to hear about known issues with the Summer 09 macbooks. I am trying to determine if this is a hardware, software, or an OS issue.

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Mac Mini :: Frequent App Crashes And Kernel Panics?

May 28, 2012

recently my Mac Mini started behaving abnormally. I've started getting kernel panics and app crashes. I tried repairing permissions, repairing my disk and even reset my PRAM. I just bought my Mini 2 months ago so its new.

Mac mini, Mac OS X (10.7.3)

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OS X :: Kernel Panics After Sleep?

Apr 20, 2010

I've been having a lot of Kernel Panics (you need to restart black screens). I've only just worked out that they almost always occur after the mac has been dormant. For instance, I'll leave the machine on (and the black screen/sleep mode activates instantly), after twenty minutes I come back to the machine, it comes back to life, but within a minute or so it crashes. This seems to be the pattern, it very rarely crashes mid-use. Safari is also nearly always loaded?

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MacBook Pro :: Frequent Kernel Panics When Waking From Sleep?

Apr 19, 2012

I have a 2010 MacBook Pro running the latest iteration of Lion. Recently, the computer has experienced frequent kernel panics (three today alone) requiring the laptop to be restarted. I have noticed that these tend to occur more frequently when I wake the computer after letting the battery drain down to near or below ten percent of its capacity and subsequently plugging it in after it goes to sleep. 

The only other clue I have is that every time the computer experiences a kernel panic and restarts, Spotlight re-indexes my hard drive (i.e., the magnifying glass icon in the upper-right-hand corner of my screen has the little blinking red dot inside of it). 

I have read a couple of things on the internet about how this may be due to Symantec Anti-Virus, which I have installed on my computer. However, that is pure speculation on my part based on a random post on a non-Apple-sponsored discussion board somewhere. 

MacBook Pro (13-inch Mid 2010), Mac OS X (10.7.3)

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IMac :: Computer Crashes And Loses Hard Drive When Goes Into Sleep Mode?

Dec 21, 2009

I just had the original 300 GB hard drive fail in my aluminum 24" inch iMac running the latest update of Leopard. I wasn't able to save it using diskwarrior (diskwarrior said it was some sort of mechanical failure) but I was able to recover most of the data from it by booting from an external hard-drive.

So I went out and purchased a brand new Western Digital Caviar Black 1TB drive. The install went fine, it found the drive partitioned it and installed Leopard successful. Then is crashed and disappeared when I left it alone to run all the software updates. I came back and the computer was stuck on "Restart Required" after downloading all the updates. I went to hit restart now, and the system just hanged, wouldn't do anything. So I hard powered down the system and restarted it. It came up with nothing, just stuck on the White Screen of Death. So I plugged the external drive back in and booted from it. Mac OSX couldn't find the drive and diskwarrior would crash if I tried to run it. I tried to boot up from the OSX start-up disk and it couldn't find the drive either.

So I took the case apart and made sure all the connections were solid and the drive was mounted correctly. Everything looked fine so I plugged it in and it started up fine. Finished the updates and the iMac ran great.

So I thought maybe it was overheating, so I've installed smcfancontrol and started to monitor the temp of the drive. I also took the mac apart again and sucked out any dust in the fans or vents. The drive never goes over a 105 F, so it doesn't seem to be overheating.

However, this is where the problem is consistent: everytime the iMac goes into sleep mode, it crashes and the iMac is unable to find the hard-drive again. Unless I unplug it completely for 5 minutes or so. Once I unplug it, it finds the drive and operates like a champ.

I think maybe there's an issue powering the drive back on? Anyone have any ideas?

And my follow up posting later that day:


So I ran some tests just to see if was an overheat issue, hard drive malfunction, or sleep issue. I decided to start encoding a video, pulled up Word, Power Point, Excel, started downloading all 6000 mail messages off my server (I never delete my e-mail :-/), also started installing iLife 09, and pulled up a bunch of webpages in Firefox with multiple tabs.

However, I shut off all sleep mode options on the hard drive. I let it run for an hour and came back. Everything is fine, hard drive isn't locked up and smcfancontrol shows the hard drive running pretty hot (115 degrees) but not so hot I'm worried. So it's definitely something to do the hard drives going into sleep mode and not powering back on. It's also weird that I have to leave the computer completely unplugged for 10-15 minutes before the drive is recognized again.

So turning off sleep seems to be my work-around, however, this shouldn't be a long term solution. I'm worried that there is a bigger issue with the iMac, but I'm not sure what would cause this. I've been a PC guy for years, this was my first Mac, and honestly I don't know enough about the inner workings to narrow this down. I would assume this would have to do with the motherboard in some way? But I'm not sure how you would even test it.

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Intel Mac :: Time Machine Crashes External HD Coming Out Of Sleep Mode

Mar 8, 2012

I have a new iMac OS 10.7.3 I am using a SeaGate 1.5 TB external HD for backup. 

If I leave the computer on continous everything works fine. It backs up every hour. It has been running fine for over a week. If I set the iMac in energy saver mode, say 10 minutes,  when the iMac comes out of sleep mode there is a warning that Time Machine failed. 

I get the following errors messages:  "Time Machine could not complete the Backup" "Error while creating the Backup Folder" 

There is no way to correct it or retry. I have to run disk utility and erase the external HD, re-format, then back everything again. 

I would prefer to use the energy save feature of the iMac if I could. I tried the Apple Support number and they just said leave the iMac in "energy saver NEVER" so the iMac stays on continous.  

Anyone able to let their IMac go in sleep mode with Time Machine turned on? It seems like a possible bug with 10.7.3?

iMac, Mac OS X (10.7.3)

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IMac :: Kernel Panics When Playing WoW?

Dec 17, 2010

Kernel panics have been quite often lately but only when play World of Warcraft. It would just happen randomly while not doing anything extensive, anyone else having this issue?

Interval Since Last Panic Report: 445236 sec

Panics Since Last Report: 5

Anonymous UUID: 409BBAE9-3DFB-4381-B130-276656A286DA

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OS X :: Constant Kernel Panics On IMac

Apr 10, 2009

My computer is having constant kernel panics. I have had about 10 in the past 18 hours, and I am starting to freak out about it. Here is the info from the error report:

BSD process name corresponding to current thread: firefox-bin
Mac OS version:
Kernel version:
Darwin Kernel Version 9.6.0: Mon Nov 24 17:37:00 PST 2008; root:xnu-1228.9.59~1/RELEASE_I386
System model name: iMac5,1 (Mac-F42786A9)

The part that says BSD process name corresponding to current thread has changed every time. When I have apps open, it will read the name of the apps extension but if I don't run anything it will say "system kernel" or something.

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Intel Mac :: Osx Lion Kernel Panics?

Apr 19, 2012

it seems osx is less stable than it used to be. My iMac 20.1 2011 osx 10.7.3 15 seems to crash and recover all by itself about two times per week. Its happens more if I try to run Aperture or Excel but happened this morning as I was writing a few notes on a pad and I was not actually using the machine. I see reports of problems with Chrome - but I've got firefox installed for web work, and this morning only had LibreOffice open with iTunes running in the background. 

Long discussions at Apple, genius and by phone have not helped. I am usually told "I have no trouble running all my macs on Lion."  I have no problems with my old mbp upgraded from Tiger to Snow Leopard and still battling on well. 

Console dump for the latest incident:

19/04/2012 11:38:22.959 ( Falling back to default Mach exception handler. Could not find:
19/04/2012 11:38:22.962 load: option requires an argument -- D


iMac (21.5-inch Mid 2011), Mac OS X (10.7.3)

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Intel Mac :: Having Multiple Kernel Panics?

Apr 19, 2012

I have had multiple kernel panics in the past 24 hours. After a hard shut down and restart the computer works again for a few hours until the next panic. 

24" iMac 3.06 GHz Intel Core 2 Duo, Mac OS X (10.5.8)

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PowerPC :: IMac G4 Kernel Panics - Overheating?

Aug 9, 2007

Yesterday a friend gave me a really nice 17" iMac G4 he was planning to throw out because it was having problems. I would really like to get this working and would potentially be willing to buy parts to repair it. I have a significant amount of Apple hardware experience, but would like to get the opinions of people who may be more familiar with iMacs than myself on these forums. The problem is that the computer has random kernel panics. Sometimes it occurs as soon as the computer is turned on, sometimes after it has been on for a few minutes, sometimes after a few hours. So far, I have replaced the RAM with known good sticks, have replaced the hard drive with a tested good one from my collection (and these were both upgrades to boot!) and I have re-applied thermal paste (Arctic Silver) to all key components (CPU, ends of heatpipe, GPU) but to no avail, I still have the same problem.

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IMac :: Getting Kernel Panics - Freezing / Locking

Jul 14, 2009

Our 1st gen 24" iMac was giving us Kernel Panics under Tiger 10.4.11 recently it all started two months ago. We took it into the Apple store for a Cleaning and fresh install of Leopard.
When we received it back it locked/froze up immediately, forcing a hard restart. When I called the store they said one of my sticks of ram was not techinically bad but still suspect. This is what I did after that call.

1. Checked the ram physically (the Apple store had placed my 512mb Apple ram stick in slot 0) which I thought very strange.
2. I corrected the ram, meaning I put the 2gb (suspect) stick in slot 0 and the 512 Apple ram in slot 1. Things were better it would take 10-15 minutes of use before locking up not 1-2 minutes.
3. I placed a new stick of Crucial (2gb from OWC) in place of the supect stick. that has had ZERO affect, our mac still freezes.
4. I pulled out the 512mb Apple (Micron) ram and replaced it with a 1gb Micron stick from OWC and that gives us roughly 20-40 minutes of time befroe freezing.

The software is up to date, I've max'd out the ram (new ram per Apple's request) and all we have running is iTunes in the background to stream to AppleTV and a few tabs of Safari open when this locks up. Right before it freezes we notice lines arcoss the application windows almost as though there a distorted pixels. When we took it in (running Tiger) the Apple Tech did check the drive and boot from their network and said our HD was not the issue, but it wasn't up long enough to cause kernel panic.

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IMac :: Strange Noise And Occasional Kernel Panics

Sep 30, 2010

I have a 24" iMac which is just over 12 months old. I noticed recently that occasionally the iMac emits a short burst of grey noise, a sort of hissing which distorts whatever sound is being emitted at the time, (music or whatever). This happens at no particular time and when running no particular program. I have tested it with external speakers and also headphones to confirm that it is not the built in speakers that are causing the problem. The sound burst usually lasts just a couple of seconds. It is not particularly loud and is something I can live with. Also recently the same machine has suffered from occasional kernel panics. Usually after being on for some time. Again at no particular time or process. If I restart the computer it often panics again.

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IMac :: Pixelated Screen At Login And Kernel Panics

Oct 14, 2010

Got the iMac 27" Late 2009 (bought it when it came out). Its always had the 'pixelated' issue (see attachment) just before the login screen appears but I've never bothered too much as its not been a problem, until recently where I am getting a lot of 'Kernel Panics' (screen wipes down and locks done entirely, have to restart to get the system up and running again). I am starting to think that the screen issue is finally starting to shows its true colours. Yes, I've done the PRAM resets, disk repairs, up-to-date with all the software etc. No joy.

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Hardware :: Imac G5 Applications Quitting And Kernel Panics?

Apr 14, 2009

I purchased an imac g5 on ebay about 2 months ago. She said it's an older computer that is in good working condition except it may need restarted a few times every now and then. Everything worked fine for the first few weeks.. but now when I try to power it up it makes a loud crackling noise and freezes. After about 5 or 6 times of restarting it I can finally get it to start up correctly. But then my applications quit unexpectedly all the time.. especially safari.. and illustrator and indesign a lot too. I ran the extended hardware test and it fails on the memory.

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Intel Mac :: Why Should My IMac Switch Itself Off When In Sleep Mode

Jun 2, 2012

My iMac is some 2 years old and have never had this problem before but twice in the last week it has failed to awake from sleep mode and I have had to hold the start  button to 'wake' it up. It then goes through the usual procedure that transpires afte 'logging off'

AppleTV 2, Mac OS X (10.7.3), I have an o2 router

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IMac (Intel) :: Cannot Stay In Sleep Mode?

Jun 25, 2014

How  can I get my iMac to stay asleep?

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IMac (Intel) :: Will Not Come Out Of Sleep Mode On OS X Mavericks (10.9.4)

Aug 31, 2014

My iMac will not come out of sleep mode and if it does it takes a really long time to do so. I've looked at several things in other forums and it seems to be a Maverick issue. However it only started about a month ago and most people have had this issue since the release of Maverick. I also read to use the bluetooth keyboard and mouse instead of a USB one. That also did not fix the problem. So I am at a standstill ...

iMac, OS X Mavericks (10.9.4)

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Hardware :: IMac 24 Intel Will Not Wake Up From Sleep Mode?

Jan 30, 2008

My iMac is about 4 months old and about twice a month after sleeping overnight the computer will not wake up. After several attempts pressing keys on the keyboard and clicking on the mouse, I have to unplug the Mac and then press the start button on the back

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IMac (Intel) :: Why Does Hard Drive Keep Spinning Up When In Sleep Mode

Jun 19, 2014

When my iMac 27" is in sleep mode I have noticed that the hard drive spins up very regularly every 4 or 5 minutes. Also when placed in sleep, the monitor takes about 30 seconds to go black. It also wakes on its own for no apparent reason. No new software has been added, only normal updates, running Lion. Time machine backup is done every couple weeks.

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IMac (Intel) :: When In Sleep Mode - Programs Are Forced To Close

Aug 29, 2014

2010 iMac running 10.9.4.  Lately certain programs are forced to close on a regular basis.  This includes Safari, Mail, Crashplan.  It usually happens when the computer is sleeping.  When I wake up the computer first thing in the morning, I usually have 3 - 4 messages saying that certain programs were forced to restart.  This can also sometimes occur when the computer is not sleeping, but when I am using it.  Typically it's Safari that is forced to restart.  

Recently upgraded RAM and added Crashplan software for data backup.   

iMac, Mac OS X (10.4.9)

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Power Mac G5 :: Wake Up From Sleep Mode Causing Crashes

Oct 20, 2007

I've been fighting bad sleep crashes for over a year. Sometimes it would freeze when it started sleep, sometimes when trying to wake from a sleep. I've spent countless hours researching the problem, reading everything on the boards. I tried resetting the PMU, turning off Bluetooth, removing all USB, and all of the other suggestions. Nothing alleviated the problem. Last week I replaced the lithium battery on the mother board because it wasn't keeping the correct time. So far it is sleeping and waking perfectly for the first time in ages. No more freezes or jet engine fans. I have my fingers crossed. Power Mac G5 dual 2 GHz, purchased June, 2003

Dual G5

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IMac (Intel) :: Why Does Computer Turn Black When Wake It Up From Sleep Mode

Jun 19, 2014

When I need to go somewhere or just eat lunch, I put my iMac to sleep. After that, when I come back to wake it back up, it stays black.

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Software :: PowerBook G4 Crashes In Sleep Mode - How Can I Recover It Back

Jul 6, 2009

I've a problem with my PowerBook G4 (12-inch DVI and Mac OS X 10.4.11). When I close the lid or when I manually try to make it sleep from the apple menu, it goes into sleep mode put only for 1 second and then shuts off (crashes). So instead of being able to wake up the computer, I have to boot it up from off.

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OS X Yosemite :: IMac Wake Unexpectedly From Sleep Mode Then Goes Back To Sleep

Nov 30, 2014

My iMac wake unexpectedly from sleep mode then goes back to sleep 00:10-00:15 later.  Yosemite is current.

iMac, Mac OS X (10.6.8)

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Software :: PowerBook G4 Sleep Mode - Hitting The Space Bar Comes Back In Again Sleep Mode?

Aug 23, 2009

I'm having a problem with my PowerBook G4 where is goes into sleep mode at random times. Mostly when I am streaming video..or at times the fan comes on, it sounds super high then boom. sleep mode again. After hitting the space bar, it comes back on, but it'll happen again shortly after. I've played with the sleep settings

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