jmacbookpro
Level 1 (5 points)

Q: OS X Lion freezes at login screen + App Store is slow

I installed OS X Lion in my Mac Book Pro (Mid 2010) and have two issues:

 

- Login screen freezes sometimes. "Colored rotating disc" appears, text cursor stops blinking and I can not do anything; I can not click anywere, I can not enter my user name/password... Only option is to hard-reboot the computer, which is not a pleasant thing to do.

 

- App Store is very slow. It takes about 30 seconds of "rotating colored disc thinking" every time a page has to be loaded!

 

I first installed OS X Lion via Mac App Store and login screen freezes happened about 50% or more of the times I turned on the computer! Also random freezes happened during computer work. Computer was almost unusable under these circumstances, so I reinstalled OS X Lion by doing a clean install (from DVD). After this clean install everithing seemed to run smoothly at first, but now login screen freezes happen again and Mac App Store is very slow as I explained.

 

I did not have any of these problems with Snow Leopard. I have checked permissions, and I have not installed too many apps yet.

 

Anybody with these same issues? Any idea of a solution? Somebody at Apple working to solve these problems?

 

Thanks!

MacBook Pro, Mac OS X (10.7)

Posted on Jul 25, 2011 3:47 AM

by jmacbookpro,Solvedanswer
jmacbookpro jmacbookpro
Level 1 (5 points)
A:

To everyone's interest: my MacBook Pro logic board was finally replaced two days ago, and the problem was still there . So I have been back to the Genius Bar today (again...) with my repaired-but-not-properly-working Mac. Just while the technician was working with my computer, they have received a notification about a new quality program for this same issue.

 

Those waiting for a software fix, then, wait no more, or wait forever, as it seems that Apple has found something wrong with at least some mid-2010 Logic Boards. It was not Lion's fault, after all...

 

So, if you have a Mid-2010 MacBook Pro 15'' which experiences a spinning-ball freeze at login with OS X Lion, check Apple's support page, as they should post news quite soon. You will probably have to take your computer to an Apple Store; then, if your computer's serial number corresponds to an affected machine, Apple will change your Logic Board for a new revised one (free of charge, even if the computer is out of warranty).

Posted on Oct 27, 2011 11:03 AM

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Q: OS X Lion freezes at login screen + App Store is slow

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  • by bruleke,

    bruleke bruleke Nov 22, 2011 4:41 AM in response to jmacbookpro
    Level 1 (0 points)
    Nov 22, 2011 4:41 AM in response to jmacbookpro

    Guys, for the love of God (or for the love of our macbooks - in case you are atheist):

     

    send this solution to Apple!

     

    We desesperaly need this!

    Also, recommend Apple to fire some engineers and hire you

     

    Thanks a lot for that!

  • by Minyall,

    Minyall Minyall Nov 22, 2011 4:47 AM in response to bruleke
    Level 1 (0 points)
    Nov 22, 2011 4:47 AM in response to bruleke

    Just to weigh in: Went into root account, repaired permissions 5 times, restarted, disabled root and so far I'm yet to have a freeze. Login seems more stable as well (used to be fairly jerky at login screen suggesting it was tied up working on something) and it now smoothly loads up my account and is ready to roll nice and quick.

  • by Metalizer,

    Metalizer Metalizer Nov 22, 2011 6:01 AM in response to bruleke
    Level 1 (25 points)
    Nov 22, 2011 6:01 AM in response to bruleke

    great to hear it's working out for the majority

     

    to fortegas: did you try to repair permissions as root after you installed the video update?

     

    the Apple support guy I spoke to a while back did look up this forum on his screen

    – whether they keep following it, let's keep our fingers crossed.

     

    Also what was it with the logic board replacements?!!!

     

    How many did need genuine replacement, after all???

  • by ommsa,

    ommsa ommsa Nov 22, 2011 7:18 AM in response to Metalizer
    Level 1 (0 points)
    Nov 22, 2011 7:18 AM in response to Metalizer

    All is fine after two weeks of logic board replacement, the machine feels more responsibe and stable. If they are making the MLB replacements it's because there's something faulty at hardware level in some mid 2010 MBP's.

     

    I've read apple is goint to switch back to NVIDIA again for the next MBP generation. Hope they will ask for good Quality Assurance because this is not the first time there are problems with NVIDIA hardware on MBP's.

  • by Gagnar,

    Gagnar Gagnar Nov 22, 2011 7:29 AM in response to Metalizer
    Level 1 (0 points)
    Nov 22, 2011 7:29 AM in response to Metalizer

    Now that you mention it. Repairing permissions as root did not solve the problem for me at first. So I downloaded the video update from Apple an installed it again and then repaired permissions as root again.

     

    I haven't see a spinning beach ball at login ever since.

     

    So maybe the installation of the video update didn't "take" the first time because of erroneous permissions?

  • by polovi,

    polovi polovi Nov 23, 2011 1:53 PM in response to jmacbookpro
    Level 1 (0 points)
    Nov 23, 2011 1:53 PM in response to jmacbookpro

    Today I install new copy Lion from recovery partition downloaded from internet to formated disk and login freezing is out. I try it several time and it works good no freezing no beach balls:)

  • by J. McNamara,

    J. McNamara J. McNamara Nov 23, 2011 4:01 PM in response to polovi
    Level 1 (55 points)
    Nov 23, 2011 4:01 PM in response to polovi

    We're having this same issue on our 20" iMac (Early 2008). The symptom we have is a beachball at the login screen. Has anyone figured out a fix for this? Usually I can unfreeze the machine by either:

     

    a. sleeping it (power button) and waking it up– but this may take several tries

    b. logging in remotely (ssh) and killing authorizationhost (a component of SecurityAgent.app)

     

    I just now booted off the recovery partition and repaired permissions there... it didn't actually indicate anything was fixed. This is really driving my family crazy, I'd appreciate any good suggestions.

  • by Terry Mahoney,

    Terry Mahoney Terry Mahoney Nov 23, 2011 5:00 PM in response to J. McNamara
    Level 1 (35 points)
    Nov 23, 2011 5:00 PM in response to J. McNamara

    @J McNamara: Try enabling the "root" user and login in as root - then repairing Disk Permissions from the Root account. This is Metalizer's Rx and it seems to have worked for some of us (where repairing disk permissions from a non-root account did not work). The following Apple Technote explains how to enable and disable the root-user.

     

    http://support.apple.com/kb/ht1528

     

    If that doesn't work there are a couple of other hacks that may work.

  • by J. McNamara,

    J. McNamara J. McNamara Nov 24, 2011 5:20 PM in response to Terry Mahoney
    Level 1 (55 points)
    Nov 24, 2011 5:20 PM in response to Terry Mahoney

    Repair disk permissions as root did not work for me. Are others keeping the root account enabled or not? I disabled it after the repair permissions and we're still getting the beachball at the login screen.

  • by Metalizer,

    Metalizer Metalizer Nov 24, 2011 5:51 PM in response to J. McNamara
    Level 1 (25 points)
    Nov 24, 2011 5:51 PM in response to J. McNamara

    did you repair more than once? you need to run repairs at least twice consecutively within the root account.

     

    you might need to leave root enabled, as in having 'Other Users' visible as a login option on your login screen

     

    (also please bear in mind that we've only been dealing with the mid-2010 mbps, with switchable graphics, so far, on this forum.

     

    there's another possibility to consider: that Apple failed to test Lion compatibility with a broad range of Macs

    including the 2008 range...

  • by Terry Mahoney,

    Terry Mahoney Terry Mahoney Nov 24, 2011 6:18 PM in response to Metalizer
    Level 1 (35 points)
    Nov 24, 2011 6:18 PM in response to Metalizer

    @Metalizer: Good to see you're following this. I agree - I forgot that you gave Repair Disk Permissions a multiple whallop in your post on the subject.

     

    @J McNamara: I suggested trying to repair Disk Permissions on iMac because it seems it would apply to multiple Mac models. The alternatives are more specific to each Mac model - but I'll put together a summary of the one that worked for my own MacBookPro6,2 - replacing the info.plist file in the Apple GraphicsPowerManagement.kext file (but as it might also apply to your own 20" iMac).

     

    There's one other hack that worked for (I think) SDG Consultant: S/he simply removed the aforementioned info.plist file (temporarily - to the trash) and then forced a kext-buffer flush before doing a normal reboot.

     

    More to come ... .

  • by haoala,

    haoala haoala Nov 24, 2011 6:43 PM in response to Metalizer
    Level 1 (0 points)
    Nov 24, 2011 6:43 PM in response to Metalizer

    Repairing disk permissions twice on the root account solved the problem for me. No more SBBOD. Thanks, Metalizer!

     

    I have since disabled the root account and it's working fine.

  • by Terry Mahoney,

    Terry Mahoney Terry Mahoney Nov 24, 2011 8:46 PM in response to J. McNamara
    Level 1 (35 points)
    Nov 24, 2011 8:46 PM in response to J. McNamara

    @J McNamara: On Nov. 4, SDG Consultant posted this ... I tried it first (but took care to have an external bootable drive/Partition/DVD/Recovery HD - just in case - because a local Apple Certified Tech said that in the worst case, the Mac might not boot after removing the kext file). However, removing the kext file did the trick for my MacPookPro.

     

    Guys!

     

    I have find the solution!

     

    Go to your /system/library/extensions/

    Drop the AppleGraphicPowerManagent.kext to the (Trash) bin. (don't empty it for the moment)

    reboot in safe mode to rebuild the extension cache. Enable login session (a previous suggestion was to enable Automatic Login - to avoid the freeze at login) and automatic graphic switch.

    Restart....

     

    No beach ball

     

    Enjoy!

     

    batery life is not impacted! Yeah


  • by Terry Mahoney,

    Terry Mahoney Terry Mahoney Nov 24, 2011 9:20 PM in response to J. McNamara
    Level 1 (35 points)
    Nov 24, 2011 9:20 PM in response to J. McNamara

    @J McNamara: After having found that (temporarily) moving the AGPM.kext into the Trash solved my Lion-Freeze-on-Login problem, I worried that it was a bit to drastic. So I tried a variation on the theme - hoping to repair whatever was wrrong with it.

     

    I used a programmer's text editor (TextWrangler) because the typical editor (e.g., TextEdit or Pages or MS Word, etc.) sprinkles the edited file with formatting codes (unless you remember to save it as a .txt file), which will cause more problems if not purged. I compared the Snow-Leopard and Lion versions of Macintosh HD: /System/Library/Extensions/AppleGraphicsPowerManagement.kext/Contents/info.plis t, line-for-line. Textwrangler makes this fairly painless. It turned out that the Lion version had an extra parameter for my nVidia GeForce GT 330M graphics board. I deleted this parameter, replaced the modified AGPM.kext file, and rebooted. This worked in my case.

     

    However, your iMac has different GPUs (nVidia 9400 and 9600M - I think?). so you would need to look for any differences in the info.plist file for whatever your own graphics board is. Thei may be more trouble than it's worth if removing the AGPU.kext file does the trick for you.

     

    Variations on this theme might be to simply replace the AGPU.kext/Contents/info.plist in the Lion version with the corresponding one from your Snow Leopard up-to-date (including any recommended video and firmware updates).

  • by Terry Mahoney,

    Terry Mahoney Terry Mahoney Nov 25, 2011 6:33 PM in response to polovi
    Level 1 (35 points)
    Nov 25, 2011 6:33 PM in response to polovi

    @polovi: This is good to know. Getting a "good" copy of lion may depend on which server it is coming from.

    But reformatting the Lion partition and having to restore apps and data from backup is a pain.

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