OS X Yosemite :: (10.10.1) IMac Restarts For No Apparent Reason
Dec 5, 2014
My iMac ( late 2012, 27", 3.4 GHz i7, 16 GB RAM, 3TB Fusion Drive, OS X 10.10.1 ) has taken to randomly restarting for no reason that I can find. It seems to be mostly when I am not actually doing anything, but, as I say, it's random. It did it five times in about half an hour the other day, then it didn't do it for a day or so, but it just did it again, which prompted me to ask. I have run Tech Tool Pro 7, and everything has passed. I have repaired permissions ( there were lots ). What next?
ok so i suppose the inevitable had to happen. and so my mac OS X crashed badly within a few days of my getting this new MBP!
i had a short word document open in 1 workspace some firefox tabs in another, and was checking out the movies in my ext HDD (formatted with NTFS).and suddenly i start seeing this multi colored round icon which i guess is the cousin of the windows hourglass. after trying unsuccessfully to force quit, i was forced to hut down using the boot up button. yes, the same procedure that wreaks havoc on the HDD.
- so my questions are - what to do if even force quit doesn't work ? its surprising that it didn't in this case, as i have used ubuntu for almost 3 years and never had the OS crash on me! of course there were a few application crashes but the force quit always worked. and there was the keyboard shortcut - Ctrl+Alt+Del.
- also what is the norm with macs in this regard ? do they crash often and for the flimsiest of reasons as in my case ?
- probably i am not aware of the Mac OS equivalent for the Ctrl+Alt+Del function that almost always works in ubuntu. so is there some key combination that is guaranteed to work in the even that even force quit does not?
A few days ago I found that launchd was constantly using around 14% of my CPU (via iStat), which drastically lowered my battery life and caused my CPU to reach 75 degrees Celsius and higher. Initially I thought that SL just needed to do something, so I ignored it. But it has persisted for a few days now, so I decided to do something about it.
I checked the Console and nothing appeared to be repeating itself, so what I did was use MainMenu to perform a batch of system maintenance tasks, and then left my Mac on overnight to see what Console would report. Besides hourly instances of "kernel" running "iCalHelper" and "SubmitDiagInfo", there was nothing else.
However, launchd lowered its CPU usage to about 3%, but it is still constant and my CPU is still at a constant 40-50%. Activity Monitor says the following processes are (constantly) taking only 1-4% of the CPU: coreservicesd launchd mds WindowServer disnoted activitymonitord ...and others The CPU is reported as 35% User and 20% System. But I am not running anything besides Activity Monitor.
My iMac shuts down by itself ocassionally for no apparent reason.It happened overnight last night.Here's the Problem Details report that appeared on restart. [code]
I have had my MacBook for 3 years and it has run great. Recently I have noticed that my exhaust fan has been hovering around 6000 RPM for no apparent reason. When I took that screen shot I only had Safari Open. Here's the vitals on my Mac..
I'm having a hell of a time with my mac. It started out when firefox would crash for no apparent reason, asking to send in an error report and eventually it got to where mac itself would crash, turning the screen dark with a picture in the middle appearing saying "You need to restart your computer. Hold the power button down for 2+ seconds". I've tried a lot, I've repaired permissions using the disk utility, I've reinstalled Java and I even verified the disk using the disk utility which seems to be the problem. It said my mac needed the system to be repaired. Except I've got a big problem: I just moved and I don't have the apple hardware test disc, so I'm stuck. Then, today I tried to use Safari instead of Firefox and even it is crashing. This is really irritating, I thought it was a virus until I downloaded a free antivirus that said it wasn't.
I have loved and cherished my MacBook Air for two years now, but last night it went in to a reboot cycle for no apparent reason. Now every time it gets to the apple logo I get the rotating "thinking" ident under the apple logo and it restarts, continually. I did the hardware test (holding down "D".....that was fine.) I also reset the PRAM... so the troubleshooting keystrokes work.
I have a Mac Mini with two external WD MyBook's attached. The drive in question, is configured for Time Machine backups every four hours. It should sleep the rest of the time. But every once in a while, it wakes. I just revs up for no reason, then after a short while it goes back to sleep. It can happen when I open a folder, open a file, click a link in the browser or some other seemingly unrelated action.
I tried to untick the "Put the hard disk(s) to sleep when possible" to see if I then at least could get the drive to stay awake instead. This did not change the behavior at all.
Does anybody have a clue what I can do, to get OS X to leave that drive the hell alone, other than Time Machine??
I have 750GB MacBook Pro and up until the other day I showed 250GB used and 500GB unused. I discovered this because the past two days my computer would just freeze and I couldn't do anything. So I ran the Disc Utility and it found some errors and fixed them. So I'm wondering if the 400GB of lost disc space now has something to do with the computer locking up? I've searched all the folders and added up their size and still come back to 250GB that I can see. So I'm assuming there's something hidden somewhere that's eating up over half my hard disc space?
Info: MacBook Pro (15-inch Late 2011), Mac OS X (10.7.4)
iMac 10.9.4 software updates last week is apparent cause of my Corel Painter X3 now crashing. I ran Disk Utility check - no probs there. I reinstalled Painter X3 (after first uninstalling X3), still no success.
Info: iMac (27-inch, Late 2013), OS X Mavericks (10.9.4)
New owner of iMac 24" 2.8 since last March. Just recently I have noticed that when I take off for a few days, I shutdown the iMac and when I return home a few days later and hit the power button the iMac is already on in sleep mode. The only change I have made recently was to add Time Machine on a Guardian Maximus 1TB raid drive, but I usually power off that drive when I leave. I've checked and searched here and in the Apple discussions with no luck. Does anyone have any idea what might be happening?
My iMac keeps restarting with a kernel problem error message. A while ago I had the same problem soIÂ reinstalled Mavericks and all was fine for a while now the problem has returned. Why did it start in the first place and more importantly can I stop it?...it just restarted again as I'm writing this.
Ever since I updated OS X to 10.9.3, every time I leave my computer for long enough for it tput the display to sleep, when I come back I find that it has shut down and restarted itself. The one time I caught it in the act, it went to a white screen with the message that the iMac was restarted "due to a problem." Â
My machine is a 27-inch iMac, Late 2009, running OS X 10.9.3
I am quite new to Mac and I've had the new 21.5' imac for around a month now and since few days ago, I started getting kernel panics at least once a day.
Login items keep opening up when desktop restarts even when hide option is clicked on login items. I've tried to remove network shares and add them again and still open up instead of hiding.Â
I am running an iMac on OS X 10.6.8 with 2.16GHz intel core 2 Duo. Recently I have seen the computer slow down with spinning wheels all the time and the sound of the hard drive turning over.
I have had this for the last few days, so I don't really know what's going on...Â
Anonymous UUID:Â Â Â Â Â Â D4B5793A-92CF-4E5D-33F8-94D77B084C5CÂ Â Sun Aug 31 00:07:39 2014 panic(cpu 2 caller 0xffffff8002c5220d): "zalloc: zone map exhausted while allocating from zone kalloc.8192, likely due to memory leak in zone kalloc.64 (1440851328 total bytes, 22513266 elements allocated)"@/SourceCache/xnu/xnu-2422.100.13/osfmk/kern/zalloc.c:2494 Backtrace (CPU 2), Frame : Return Address 0xffffff81348c3c70 : 0xffffff8002c22fa9
I recently purchased a PowerBook G4 it had 512mb ddr2 ram as standard so I went out and bought a 2gb stick for it. After removing the 512mb stick and installing the 2gb stick it worked fine, and then it started to crash without anything being done, so initially I borrowed a known to be working stick of the ram and put that in and the errors keep coming up? Even with the original stick it seems to be crashing for no apparent reason. Before I installed the new stick it was working fine the the 512mb stick, but she still does it with the original stick.
Whenever my Mac (it happens on two different ones) is awaken from sleep, it seems the machine was attempting to log out. If there was an unsaved file and I wake the machine it says it timed out to log out waiting for me to have saved it. At that point I just cancel the logout.Â
This happens on an iMac 2013 and a new Mac Pro as well. Is there a setting I am missing?Â
My macbook sometimes reboots while I am using it. I may be running 2-3 programs and it randomly restarts but no other problems as far as I can see occur. Does anyone know why it randomly restarts? It does not happen that often but every once in a while.
