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Long shutdown times in OS X Mountain Lion even after 2 clean installs...

4411 Views 20 Replies Latest reply: Mar 29, 2013 9:41 AM by catweesel RSS
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mikey110 Level 1 Level 1 (0 points)
Currently Being Moderated
Oct 2, 2012 6:47 PM



I upgraded to OS X Mountain Lion yesterday via clean installation by downloading the OS X 10.8.2 installer from the Mac App Store and restoring it to a USB. So far, everything is working as expected, however I am experiencing higher than expected shutdown times (around the 20 seconds) in Mountain Lion. In Snow Leopard and Lion the average shutdown times that I had where in the range of 2-5 seconds. The reason of why I am reporting the slow shutdown time is that I was part of the OS X Mountain Lion Developer Preview program and at one point I had a partition in my MacBook Pro with the OS X Mountain Lion 10.8 GM Build (12A269) which was made available in the Mac App Store and the shutdown times were short and similar to those in OS X Snow Leopard and OS X Lion. Off course, given that I am very cautious when upgrading since my horrible experience with OS X Lion's release build, I waited up until yesterday to fully migrate to OS X Mountain Lion 10.8.2 since I thought that by the time of the X.X.2 release many of the kinks were being ironed out.


Anyway, I tried to solve the issue is to reinstall OS X Mountain Lion for a second time by cleaning the disk and zeroing it out on Disk Utility. I used a bootable USB installer that I made with the original installer of the app store and that has been used by many users to cleanly update their systems. The reason of why I did a second clean reinstall was to see if there was a particular app that created the issue and decided to run the computer on its factory set up before putting any new apps, before testing the computer I did a reset command so that I would boot into a new computer session and allow the OS to build its caches. The shutdown process in the reboot was slow there. I was expecting that one of my third party apps would be the reason of why my MacBook's shutdown was slow but that wasn't the case because after 30 minutes of use the shutdown time was still long without any third party apps. Due to this revelation, I decided to reboot my computer but use verbose mode because it would give me what processes are running at shutdown. Since, I could not possibly write down all the processes, I used a camera to take a picture of the verbose dialogs during shutdown. Using the same usage methodology in the previous computing session where I kept the computer running for about 30 minutes; the long shutdown was duplicated successfully.


Here are the pictures... I picked the three best pictures for clarity purposes, but they show all the available information on the screen during the complete shutdown process.







If you are having problems viewing this pictures, you can alternatively view them here.


I hope that these pictures are helpful. Now, I made a few observations on the issue, all the mentions of the hanging processes seem to be Apple derived.


Thanks for your time and assistance on this lengthy thread.

MacBook Pro, OS X Mountain Lion (10.8.2), 15"; 4GB RAM; nvidia GT 330m 256
  • Carlo TD Level 3 Level 3 (550 points)

    shut it down normally from the apple menu. just before you hit the shut down button uncheck the box that says restart the programs that were running. Let it sit there.... if you get any warning signs then force quit mail. then open mail then quit mail normally. each subsequent time it will be fine.

  • Carlo TD Level 3 Level 3 (550 points)

    more than like likely you will need to reinstall the OS X by holding down command + R when the computer starts.

  • Carlo TD Level 3 Level 3 (550 points)

    try it... you have only to gain improved performance. It will take you ~1 hour and 30ish minutes.

  • Carlo TD Level 3 Level 3 (550 points)

    Lion Recovery was able to be put on a usb drive. Mountain Lion Recovery is built into the operating system. I would not trust what you have on the usb drive.

  • Carlo TD Level 3 Level 3 (550 points)

    No i dont think you need to reinstall the OS all together. I ocassionally have a slow shut down... but it is either because an application did not finish what ever it was it was doing or i was impatient. I have had this happen with Mail mostly and this happens rarely. I think the computer remembers how it was shut down. I think it was just a quirk that the apple menu disapeard temporarlily. Go to your application folder. Inside that there is a utility folder. Inside that there is an app called disk utility. Open disk utilty and select your hard drive on the left (usually the second icon) and click repair permissions. I think you will be good. I have run the reinstall on my computer a few times since installing ML... but it was only because I felt I did something i should not have been doing or because something was quirky. I am really having no problems with it. It runs smoothly. I sort of dropped my laptop bag the other day, so now i am a litte paranoid  i might one day when i get time just have the folks at apple look at it and dust it for me. I do also back up my computer religiously... using the timemachine in system preferences. that is a good program. But from my experience I am learning it is best to have two backups just incase something happens to the first back up. I am paranoid i guess.


    Message was edited by: Carlo TD

  • vea1083 Level 3 Level 3 (685 points)



    Message was edited by: vea1083

  • Carlo TD Level 3 Level 3 (550 points)

    no worries. yup i have done it a few times. It wet smoothly even though i had a backup near by in case my data was lost... but it did not touch my data. It was for things like a long shut down, or I did not understand why my hard drive was missing from my desktop (siple explaintion i found out later) or I guess if i got a weird crash.

  • Carlo TD Level 3 Level 3 (550 points)

    No...No... not at alll... if you see that you are in the wrong area... you probably are in disk utility. Do not Erase or zero out the drive... just restart the computer holding down command+R and select reinstall OS X. Don't erase or zero anything out.

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