Mac Pro :: Randomly Freezes At Startup And Shutdown
Jun 23, 2014
I have got a problem with my brand new Mac Pro. It randomly freezes at start-up and shutdown. I sometimes am able to work around the problem by turning on the monitors last or switching them off first but it does not always work and is a pain anyway. While waiting for Apple or another manufacturer to release a decently priced 4k display, I am using 2 HP 24' monitors inherited from my previous desktop.
One is connected via an HDMI cable (HP2405) and the other via a thunderbolt to HDMI cable with a DVI adapter (HP2448).Would I be better of using a Thunderbolt connection for both displays ? Or any other connection?
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Sep 8, 2006
My system has randomly shut down twice now in the last two days. Dual G5 2.3. I checked the console log, which I know very little about, and it said this:
localhost kernel[0]: ApplePMU::PMU forced shutdown, cause = -122
Two questions-
what's the -122 code mean?
Do you think resetting the PMU would be the solution to this?
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Jun 4, 2012
Macbook randomly shutsdown at any moment
Info:
MacBook, Mac OS X (10.7.4)
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Feb 1, 2012
I have a (big?) Problem with my Mac Mini Server (Mid 2011, Lion with all updates): It works all perfectly fine but in 10 til 50% of the shutdowns (depends on the weather i fear ) it will freeze at the gray screen with the spinning wheel for hours and longer. I have to use the power button to shut it down.
I had a look at the terminal serveral times and besides the last "shutdown: halt by...." there are always different entrys.
Info:Mac mini, Mac OS X (10.7.2)
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Sep 1, 2009
Did an upgrade install from 10.5.8 to SL (MacPro early 2008, 8800 Nvidia). Didn't use the Mac for a couple of hours - when I came back I had a black screen and no way of reviving Mac (only forced shutdown via power button). this happened twice. Did never have a problem previously.
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Feb 3, 2012
My iMac randomly freezes and crashes on me. Most of the freezes occur when scrolling with my trackpad on websites with Google Chrome. I get the pinwheel and have to use the power button to turn off and on the iMac. I haven't noticed any particular connection to Flash websites or video related sites. It just seems kind of random. I've also been careful to have absolutely nothing else running and it still does not prevent it.
Also, from time to time the iMac will crash and go to a solid color screen. Either Blue-Gray, White or Black. It seems to be random colors. When this happens, I have to use the power button to cycle it off and back on again.
Some info about my iMac: Model Identifier: iMac7,1 Processor Name: Intel Core 2 Duo Processor Speed: 2 GHz Mac OSX 10.6.8
What could be causing this or how can I diagnose the problem? I can give more info if needed.
Info:
iMac, Mac OS X (10.6.8)
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Jul 4, 2012
I purchased the new 13-inch Macbook pro on the day of its launch and since the first 30 minutes of use it has constantly frozen intermidiatly for apperently no reason. I've tried re-installing the OS, taking it to the genius bar(They said everything looks ok and on the repair sheet it said "UNIT IS RFB"), and resetting the SMC. I checked the kernel log and it has a tendency to throw this: 7/4/12 12:02:42.000 AM kernel: Previous Shutdown Cause: 3. Read up on this and apperently it has to do with overheating issues, but this doesn't make sense condsidering it can happen even when just doing textbased web searching(I do not have adobe flash installed). I tried ressetting the SMC, changed nothing. Some days it may only happen once or twice, but sometimes it happens so frequently that the computer is barely usable. Apperently I am not the only one having this problem, some people are reporting the same thing but claiming it to be a problem with the Intel 4000 graphics card. The model is the baseline 13-inch Macbook pro running OSX 10.7.4.
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Jun 16, 2009
I used to open up GarageBand 09 normally and it would take about 10-20 seconds. Now it takes a couple of minutes while it says its not responding. I don't think this is normal. Also sometimes when I am scrolling down through software instruments it randomly freezes and then shuts down unexpectedly. I have the new 13.3" 2.4ghz macbook. i have alot of free space and no files in the GB folder. I haven't touched anything regarding the system's font, new or old.
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Apr 23, 2012
I'm having huge issues with my 20-inch early 2008 iMac running 10.7.3. I upgraded my RAM (to 4Gb) 8 months ago and everything was running nice and easy until I upgraded to Lion. Either one of these things happen: My screen goes entirely grey or blue with white faded thin vertical stripes at random timesMac freezes working with any Adobe applications (mouse cursor still works but I can't click anything until I turn off and on)Mac freezes for a while and after a 30-second delay clicking and pressing buttons frantically everything goes back to normal
The strangest thing is that when I play Sims 3 for example (a beast of RAM and video drainer) nothing happens. I tried almost everything from repairing permissions to re-install my memory modules. I couldn't run the hardware test.
Note: I live in Brazil so sending my machine to a Genius Bar is completely off the question.
Info:
iMac, Mac OS X (10.7.3), 20 inch (early 2008), Core 2 Duo
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Apr 28, 2012
Only a laserprinter is connected. Sometimes I can work for a few weeks without problem, but then the computer freezes. The computer sounds 3 monotone chimes in a row and repeats this, keyboard an mouse become inactive till I do a hard shutdown.Took the computer 2 times to the Apple store, they tested for a week but apparently nothing happened then.
Info:
iMac, Mac OS X (10.6.8)
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Dec 18, 2010
Sometimes, when I try to turn off my computer, it doesn't shut down. It would either quit all programs (including finder) and just show the wallpaper, or it would go to the blue-ish screen (a normal phase in the shutdown process) and the wheel on the bottom would spin forever. In either case, the computer just freezes at that point and I have to power cycle it manually.
I noticed that this occurs more frequently if I don't restart it for a couple of days (3-4 days max), but my friends are able to go on without a restart for 2-3 weeks at a time. I tried reinstalling OS X to no avail. I now also quit all my programs manually before I try to shutdown (don't know if they affect anything) but that does not appear to help. I'm using a late 2008 MBP with OS X 10.6.5 (10H574)
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Nov 9, 2009
My Mac will freeze at random moments (not while running any particular app or program) and go to a blue screen, after a few seconds it clears up by itself. Sometimes it will happen several times in a row, sometimes 10 - 15 minutes in between.
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Sep 10, 2014
I got a new Macbook Pro Retina (mid-2014) a few weeks ago and the trackpad and screen randomly freeze even when the only thing I have open is Safari. In other words, it doesn't feel like my computer has a 2.6 GHz Processor and 8 GB 1600 Mhz Memory. My downloads folder also constantly has the loading bar under it; it goes away when I remove it from the dock and replace it, but appears again after downloading one thing.
This is really frustrating when I got a new Macbook so that I wouldn't have to deal with these types of problems. They're all issues that I never encountered with my Macbook Air (mid-2011).
Info:
OS X Mavericks (10.9.4)
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Dec 3, 2009
It's been having trouble shutting down when it's gone unused. Then it won't turn on unless I turn the surge protector off and back on. (I thought it was tied to my backup drive being on, but now I just turn it on when I need it) Even then it doesn't start up automatically, I have to push it a few times. Just now when I held down the start up button it made a loud whooshing sound, started up, maintained the sound for awhile and then normal but I still hear it running louder than usual. I dread it may not start up again one of these times. Side issue, maybe unrelated but firefox is driving me crazy with proxy issues, aol mail issues, and just now I couldn't post in this forum it was "forbidden" when I hit submit. so I used Safari instead and found my post was actually posted.
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Nov 30, 2007
recently my ibook keeps randomly locking up, it first started the other day when it got stuck on a blue screen at start-up eventually it came on, but kept locking up, no spinning beech ball just completely froze, i held down the power button to turn it off, i then had to wait at least ten minutes before trying to start up again, if i didn't it would get stuck on the blue screen, then something else weird happened, when i started up it came up with the mac set-up assistant similar to when you first upgrade, so i turned it off again and it went away, so i started up again this time i noticed that spotlight was indexing, despite it already doing that ages ago when i upgraded to leopard, so i thought this had something to do with it, because it kept freezing in the process, but today i turned it on, let it index and to my surprise it didn't lock up, so i went to play world of warcraft, and as soon as the login screen came up it locked up agai
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Aug 23, 2008
Fall 2005 PowerMac G5 dual 2.0Ghz with Leopard 10.5.4
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Jul 27, 2009
quicktime randomly freezes when watching full length movies 1+ hours, it happens randomly and i am unsure what causes it.
Latest quicktime + perian.
Tried reinstallling quicktime and no change.
i wonder if this:
Jul 27 02:48:00 MacBook-Pro kernel[0]: IOHIDSystem::relativePointerEventGated: Capping VBL time to 20000000 (was 22349540)
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Jun 27, 2014
So, I have a late 2011 MBP 2GH i7, OSX 10.9.3. 500GB HD 16 BG 1600 Mhz DDR3.
The problems started a while ago when the computer started freezing at random times. The mouse would move and there was no "pinwheel" but the computer was unresponsive. When I closed the screen the power was still on and the screen did not shut off. The only way to reset the computer was to hold the power button and do a hard reset. I don't remember if I replaced the RAM from 4BG to 8GB Crucial Memory before or after the computer started freezing, either way, shortly after or around the time when I replaced the ram the hard drive also failed.
I replaced the HD with I believe a Seagate hybrid drive with a small solid state segment. This whole time the computer is still freezing and now since I have a hybrid drive the Apple store can't support because it's not factory specs and MacMall here in Santa Monica can't find anything wrong with the hardware or software after running all of their tests.
At this time I have a feeling it is the ram so I purchase a new 16GB Crucial RAM. Everything is great till it yet once again freezes in the same way as before BUT!! Now if the computer sleeps because the battery run's low, when I plug it in and the computer reboots (grey opaque screen with the vertical lines as the bottom) it starts beeping 3 times. I hard reset via the power button and the computer boots up as normal (although a little slower).
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Aug 30, 2009
I'm just setting up a Mac Mini for a friend and on power-on/start-up and also on shutdown I'm getting white text on a black screen which is obviously some kind of start-up log. I've had a fair few macs but have never seen this and certainly wouldn't expect it 'out of the box'.
What exactly is it and how do I stop it from happening ever?
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Mar 12, 2012
My MacBook is three years old. Lately it has been slow starting up and shuting down with no peripherals connected, so flustering t to the point I have to do a forced shutdown (by holding the power button down). Anybody have esimilar experience and might now how to spped it up
Info:
MacBook, Mac OS X (10.7.3)
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Dec 2, 2014
my iMac random freeze and restart, on console i not see any message about kernel panic and etc system clear install ! what's happened ?
log1 System Version: OS X 10.10.1 (14B25)
Kernel Version: Darwin 14.0.0
Boot Mode: Normal
Model: iMac15,1
RAM details...[code]....
Info:
iMac, OS X Yosemite (10.10.1)
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Mar 22, 2012
It just randomly freezes, cutting off all ability to navigate the desktop.Re-booting the system resolves the problem, but leaves me with a lot of lost work.SOMETIMES taking out and putting back in the batteries resolves the problems, but not often.The kayboard continues to work, so it doesn't seem to be a bluetooth issue.
Info:
iMac (27-inch Late 2009), Mac OS X (10.7.3)
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May 6, 2010
During start up I get the apple logo and everything boots although it takes forever, the apple logo goes away screen goes blue, and sometimes it loads to the login screen about 10 mins later, and sometimes it just sits there. - During restart, it shuts down makes all the appropriate sounds, screen goes dark, and all you hear is a residual humming from the inside under the keyboard, and then never restarts. (You have to force shutdown) - Same story as above with both shutdown, and sleep.
The only way to get it to load successfully is in safe mode, but even then it still wont do the above problem correctly, it just at least starts.
- Resetting the PRAM, Holding power button for 5 seconds until repeating flashes, I've tried reinstalling snow leopard 5 times, I've checked for updates, I've repaired disk permissions, I've repaired the disk, I've even tried stepping the OSX back down to 10.3(The original operating software for this MB)
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Feb 19, 2012
A few months ago, I bought a macbook pro and it was doing fine. But recently, every time it starts, a blue screen appears for a split second then it goes to log- in. Then, every time I shutdown, it will also show up for a split second then shutdown. It doesn't affect the computer but I'm just wondering how to stop it.
Info:MacBookPro, Mac OS X (10.7.3), blue screen
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Jun 25, 2014
I was watching Netflix two days ago when all of a sudden the image froze (the audio continued). I figured my internet was slow or something and waited a little for the image to keep moving, but nothing happened only the audio kept going. I tried to press esc to exit full screen mode, but nothing happened, I pressed more keys, still no reaction, even the audio and screen brightness keys didn't work. So I held the power button to do a force shut down.
After a couple of minutes, I pressed the power button again, startup sound played, then the white screen with the apple logo and loading gear appeared together with a grey loading bar. I figured that meant it had to repair something and waited. After two minutes it just shut off. I decided to leave it closed for the night. The exact same thing happened last night and tonight as well.
I have a MacBook Pro, I think its from 2010, with iOS Maverick installed. I also have MacKeeper on there, which I just read is apparently not a good thing. I tried finding an answer in the discussion forums, but I could only find that you should do a safe boot, which is supposed to make the grey loading bar appear, but that already showed up before and even when I tried holding down the shift key, the same thing happened.
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Feb 19, 2012
I forgot to switch on the power socket at the wall so when I came back it had powered off. When I switched it back on it showed the last screen visible before sleep mode kicked in and then showed the apple logo with a progress bar underneath. The progress bar starts to move slowly but after about a minute starts again. It slowly starts to move again but stops after about two minutes and the macbook powers off.
Info:
MacBook Pro, snow leopard
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Mar 16, 2012
I am backing up now and realize I should reinstall the system but do I have to erase everything off the computer ?
Info:
MacBook Pro, Mac OS X (10.6.8)
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May 13, 2012
I cant seem to make it shut down completely or re-start, it seems to be in sleep mode and wont wake up. When I try and restart it makes a sound like its trying to eject a disc (there is nothing in the cd drive).
Info:
MacBook Pro (15-inch Early 2008)
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Sep 25, 2005
adium froze, so i force quit it and restarted.....well now the computer freezes at the startup screen..........ive tried doing the shirt cmd opt del to boot fom my external but it doesnt work.........it freezes at the screen with the apple and the little spinning dial thing on the grey backdrop.....PLEASE HELP. im really worried since i dont have apple care....thanks.....help is appreciated asap because i have a paper i need to print out on it
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Jan 23, 2009
system info:
Dual 1.8GHz PowerPC G5
2 GB SDRAM
OS 10.5.6
My computer is 4.5 years old. And every winter for the past 3 years it's had troubles starting up in the cold mornings. Gradually getting worse each winter.
Today wasn't too bad.. it started up on the 2nd try. But on a particularly frosty day it might take 3 goes.
It freezes anywhere between the grey screen to the loading wheel to the desktops appearance.
Sometimes it freezes and gives the message to switch it off by the power button.
On occasion it freezes and shows me this: [URL]
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