Q: Macbook Pro freeze after login (Yosemite)

Rebooting 5 times fixes this pretty consistently for me.  Completely awful experience.   I typically get this when I do the following

1) Suspend laptop by closing lid

2) Lift laptop lid and notice black screen (does not resume)

3) Reboot and login screen appears

4) Login

5) Witness progress bar stuck at 50% after login

6) Repeat steps 3-5 another 4 times

7) Laptop punches through to desktop

What is going on with s/w quality at Apple.

Same problem here...

Last week I got a shiny new MacBook Pro with Mavericks on it. Upgraded to Yosemite this weekend. This afternoon, I closed it and went home.

At home, opened it again. Within minutes, it froze on me and a reboot got me stuck in the login process too.

I tried several things, from holding shift at boot (which didn't do a thing) to cmd+option+R+P and trying to change some gpuswitch settings. Then after a handful of reboots, it seemed to realize the loop and decided to boot in Safe Mode, after which I was able to login normally. With some screen flickering that is.

I'm not sure, but it could have something to do with closing the Macbook while an external screen is attached and then disconnecting it.

I'm having the exact same problem! After installing Yosemite I started up my MacBook pro and logged into my user account, it started loading but when the progress bar reached a little less then halfway it froze. I let it go for 24 hrs and it was still stuck there. I tried rebooting, restarting several times and still ended up with the same results it only lets me reach the desktop in safe mode (which I am in now). Please Some one at Macintosh/Apple look into fixing this! My mac has been more then great until loading Yosemite. I would like to continue to support mac but unless this issue is resolved I will end up having to go back to Windows/PC... I am new to owning a mac and would like to continue, but with Yosemite... Come on... they should and could do better.

I had that issue yesterday as described - after selecting the user and password identification the system freezes at approximately 50% statusbar progress. I can not confirm any correlation to the laptop lid.

I think FileVault has something to do with the symptoms - the issue raised half a day after turning FileVault on and it disappears directly after I switched it off when I managed to get back into the system. I tried them all (endless reboots, PRAM reset, disc repair, etc.), after SMC reset (Intel-based Macs: Resetting the System Management Controller (SMC)) I was able to access one of my three accounts on that machine and turned FileVault off and immediately after that I was able to access the other accounts.

There are other forums that report similar observations. Maybe some of you can confirm that they have this issue with a running FileVault.

Kind regards,

-C

Thanks so much for the advice I'll try it and see how things go! Have a wonderful day!

Hi,

I am not running File Vault and experiencing the same issue. The only way to get to my machine is via Safeboot.  HELP!  I don't have a recovery disk since I have never had an issue when upgrading OS's.

MBP late 2010 i7

I'm having the same problem. Have reinstalled the OS twice.  How can I fix this?

I also have the problem with FireVault encryption.  It just appears to be frozen and calculating the time for completion.

I'm seeing this issue with FileVault encryption enabled.  Don't know if it goes away after disable but not an option for me since it's a corp device.

Found my issue.  Unsigned kernel extension from Logitech.  Once I moved it out of the way, I could reboot w/o any problems.

1) I found the issue by firstly pulling hte list of kernel extensions

$ system_profiler SPExtensionsDataType

2) Then I searched for anything which was unsigned i.e. where "Obtained from:" string was not Apple or Identified Developer

3) The only one was this:

LogitechUnifying:

      Version: 1.3.0

      Last Modified: 11/12/13, 5:13 PM

      Bundle ID: com.Logitech.Unifying.HID Driver

      Loaded: No

      Get Info String: Logitech Unifying 1.3.0 (60)

© 2009-2011, Logitech, Inc.

All rights reserved.

      Obtained from: Not Signed

      Kind: Intel

      Architectures: i386, x86_64

      64-Bit (Intel): Yes

      Location: /System/Library/Extensions/LogitechUnifying.kext

      Kext Version: 1.3.0

      Loadable: No

      Signature Validation Errors: Not Signed

      Dependencies: Satisfied

      Signed by: Not Signed

4) I moved the file out of the way

$ sudo mv /System/Library/Extensions/LogitechUnifying.kext /Users/Shared/LogitechUnifying.kext

I had the same issue as all of you guys. Here is what really worked for me and though of sharing with you

  Just as you could before, you can boot into Yosemite’s Recovery partition by holding down Command-R at startup, and in the OS X Utilities window that eventually appears, click Reinstall OS X, and then click Continue. This launches the OS X installer, which will download a fresh copy of Yosemite and install it on your startup volume.

Alternatively, if you no longer have the original Yosemite installer that you downloaded from the Mac App Store, you can get another copy by selecting App Store from the Apple menu, clicking on the Purchases link, and clicking Download next to the OS X Yosemite entry.

If the word Download doesn’t appear next to the installer, it means that the App Store believes you have a working copy of the installer already on your Mac. You should locate that copy and if you don’t want to use it—because it’s now a couple of point-releases old, for example—either compress it or remove it from your drive. Once you do, you should be able to download a fresh copy from the Purchases page.

The reinstallation might take up to 8 hours. After the reinstalling the OS I have no issues anymore !!! Hope this will work for you too !

All the best !

I can confirm it is an issue with FileVault Encryption.  I left my laptop plugged in for close to 14 hours to allow for the encryption to finish, it needs power, but it never did.  Once I deactivate the encryption my problems went away, completely went away.

Hi. I sent this email earlier in the morning.

I've got an early 2011 15" MBP with an encrypted and up-to-date Yosemite. Today, while running Pixelmator that the OS days ago automatically updated (I reckon to the 3.2.1), with a 29KB png file open, I experienced serious graphic artifacts that made the OS not responding. The desktop was translated to the left for say 5 cm, with the left edge appearing on the right side of the screen, separated from the right edge by a vertical black stripe. A similar screen you can notice while swiping from a desktop to another one or between full screen apps. Besides some horizontal lines appeared.

This not responding situation led me to force the shutdown by holding down the power button. At the restart now, after inputting the admin password, after displaying the progress bar, the OS does not load the graphic interface. The same with other users or even with the recovery partition.

I guess it may be something related to the brutal shutdown, however I can't use my MacBook Pro without having done anything but opening a small image with Pixelmator. For this reason I can't even attach a screenshot because it is stored in the Mac.

I had a similar experience where I can't even boot now.  I have reloaded Yosemite 7 times, with the final time it actually worked for 5 boot cycles until I opened photoshop.

I have a late 2010 MBP. I have added curcial memory and 2 SDD drives.  I have read that Yosemite now does a memory check for OEM memory which could be causing the error.  Unfortunately I cannot find my original 4GB memory to test out that theory.  I have am also running file vault on the secondary SDD, which I can't access and since it is encrypted. 

My MBP is unusable at this point with no ability to recover since I did not have a backup with time machine.  I really wish Apple will fix this for the older machines may have had tweaks done.  I have never had an issue with upgrades in the past.