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Mountain Lion login screen freezes after sleep. Macbook Pro Retina

526 Views 1 Reply Latest reply: Oct 7, 2012 11:08 AM by Kappy RSS
Jeroenbe Calculating status...
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Oct 7, 2012 11:03 AM

After my macbook goes to sleep (for about an hour) I can't get past the login screen.

My mouse won't move, there's no rotating wait icon but my cursor is blinking. However when I type nothing happens. It sometimes goes to sleep randomly, when pressing a button, my laptop wakes up (as normally), but the problem isn't fixed, it just keeps excisting.

This forces me to hard rebooth my laptop, which i'dd rather not do ofcourse.

 

Anyone else has this issue? Any help is much appreciated!

MacBook Pro (Retina, Mid 2012)
  • Kappy Level 10 Level 10 (221,005 points)

    If you are in warranty you may want to take it in for service just to be sure there are no hardware issues. Otherwise, I would reinstall OS X. Preferably from scratch if you have a reliable backup from which you can restore your files.

     

    Here are the two alternatives. The first does not erase the hard drive. The second one reinstalls from scratch.

     

    Reinstalling Lion/Mountain Lion Without Erasing the Drive

     

    Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.

     

    Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.

     

    When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list.  In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive.  If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.

     

    Reinstall Lion/Mountain Lion: Select Reinstall Lion/Mountain Lion and click on the Continue button.

     

    Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.

     

     

    Install or Reinstall Lion/Mountain Lion from Scratch

     

    Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.

     

    Boot to the Recovery HD:

     

    Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.

     

    Erase the hard drive:

     

    1. Select Disk Utility from the main menu and click on the Continue button.
    2. After DU loads select your startup volume (usually Macintosh HD) from the left side list. Click on the Erase tab in the DU main window.
    3. Set the format type to Mac OS Extended (Journaled.) Optionally, click on the Security button and set the Zero Data option to one-pass. Click on the Erase button and wait until the process has completed.
    4. Quit DU and return to the main menu.

     

    Reinstall Lion: Select Reinstall Lion/Mountain Lion and click on the Install button.

     

    Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.


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