Previous 1 7 8 9 10 11 Next 204 Replies Latest reply: May 30, 2013 2:28 PM by David Schloss Go to original post
  • NatSci2112 Level 1 Level 1

    Just had it happen, so it isn't the auto log in.  Occurred when I was switching Spaces.

  • RMraiden Level 1 Level 1

    My display of my Macbook Pro 13" (2010) Core 2 Duo goes off and comes back seconds later. The energy save is set up to 2 minutes for the display. I have this problem since i updated my Macbook to Mountain Lion.

    If i close the Macbook and open again the display goes grey and the desktop shows after 2 - 3 seconds. But this problem didn't excist every time.


    I hope i can help with this statement.



  • carstenfromrostock Level 1 Level 1


    same issue such as the original post here (Macbook 2008 late, dual monitor use).

    I am not able to narrow the bug down, the situations where it happened are very different.

    Hoping for a bug fix.

    (Next issue: the cpu ussage is higher and the fan has more often a higher rpm.)



  • thm82 Level 1 Level 1

    This happend to me too. But I am on a late 2007 MacBook Pro 15-inch running Snow Leopard!

    It just closed all applications in an instant, logged me off and sent me to the login screen. Happened 4 or 5 times doing different things. Only thing in common was that the system was under some kind of stress: Chrome with 50+ tabs, 2 or more huge SVGs opened in Inkscape, as well as other image processing applications open. No external monitor connected.


    A german news site ( reported that one of their iMacs running Snow Leopard also showed the issue. It seems that this problem is not only related to Mountain Lion!

  • Dr.Doublek Level 1 Level 1

    Hi folks,

    having the same issue on a MBA 2011. I noticed it on Lion and Montain Lion. So I hope it will get fixed soon!



    Dr. Doublek

  • itsthechuck Level 1 Level 1

    I have an 8 core mac pro having the same issue, unplugged one of my 5770's and haven't had a crash since. I'm missing that extra screen relesate so hopefully this issue is worked out.

  • Coolzy Level 1 Level 1

    Having the same random log out issue on my mac pro w/dual video cards.  I'm unplugging my 3rd monitor (leaving video card #2 unused), hoping it will get resolved soon!

  • Coolzy Level 1 Level 1

    Just wondering if anyone else 1) has experienced this problem, and 2) have any proposed solutions.

  • NatSci2112 Level 1 Level 1

    Strangely enough, I went back to three monitors with two HDMI coming off the MDPs of one card and one DVI off of the second card.  That was over a week ago and I've only had it happen once.  That was when I was using Spaces.

  • tom.haynes Level 1 Level 1

    Just to chime in here. 2012 macbook pro i7 13". I just migrated over from Lion to Mt Lion. I've been using some tools I've used many times to delete duplicates and ! tracks from itunes (Dupin & Tracksift). I have a large library and have to run these for a few hours.


    I go back to my machine and it either has tried to log out or has logged out. Long time user and this has NEVER been an issue for me. Check all the account and energy saver, ect settings. Mac keeps trying to log me out.


    I just tried the advanced setting for Privacy & Security in Sys preferences mentioned later in this thread. Will try to repost again if this is the culprit. Why would Apple start putting all these new settings into the OS? At least have a quick and easy run down page of these new OS settings changes to make us aware and not spend endless hours trying to figure out what's going on. These may not be bugs but **** settings changes that are not  posted in the upgrade docs.

  • imyrvold Level 1 Level 1

    I was contacted by Apple yesterday about my logout problem for my Mac Pro, and we did a Data Capture of my Mac Pro, so hopefully we will have a solution for this in a few weeks. I have been able to stay logged on for a couple of weeks now, by avoiding to switch to another Space, and staying in the same Space all the time.

  • ellocoescoces Level 1 Level 1

    After delaying the upgrade from Snow Leopard to Mountain Lion (I tried a clean install and this was working fine for me) I decided to upgrade.


    Worked fine for a day or so and now I have the maching logging me out completely after a couple of minutes on three accounts tested (including the guest account).


    I have worked through most of the solutions suggested


    1. Repairing permissions using disk utilityand resetpassword (repairing ACL permissions didn't seem to work or just took forever!)

    2. Booting in safe mode (which appreared to be stable) and removing potentially offending automatic login items


    I do not use dual monitors nor is there a dual graphics output ( no built in graphics on Core 2 duo that I'm aware of) so i suspect this is potentially a software issue.


    I also cannot use my USB audio driver as I cannot see this at all in Audio MIDI drivers or in the sound option.


    Very disappointed with this and I plan to revert to Snow Leopard until this is resolved (praying that time machine will let me do this!).


    intel core 2 duo iMac 24 2009

  • JayLP Level 1 Level 1

    Today I updated to Mountain Lion 10.8.1 which was released today. I was hopeful that this problem was addressed and fixed.


    I plugged in my 3rd monitor into the 2nd video card, and reboot my system.


    Within 5 minutes, I had the spontaneous logout problem twice.




    So for me at least, 10.8.1 does not solve the issue.



  • Coolzy Level 1 Level 1

    Thanks for the update.  I'm about to apply 10.8.1 myself and was wondering if this got resolved.  Sad news.

  • mwaustin Level 1 Level 1

    Same here.  Mac Pro with two NVIDIA video cards.  Frequent spontaneous logouts.  10.8.1 does not solve the problem.  (Plugging two monitors into one card and removing the second card does still prevent the spontaneous logouts.)

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