2013 iMac 27" freezing on wake from sleep

Discussion in 'iMac' started by triple-tap, Mar 29, 2017.

  1. triple-tap macrumors 6502

    Joined:
    Feb 18, 2013
    #1
    Hello all,

    I am having an issue with my 2013 iMac 27" in which the system works fine for a few days, but intermittently decides to freeze when I try to wake it up from sleep.

    The system is using an external SSD in a thunderbolt enclosure as the boot drive. It has been on this setup since I purchased it new in mid 2014.

    However ... recently, it started giving me this problem: When I try to move the mouse or hit a key on the keyboard to wake the machine, it simply shows a black screen. The login screen never appears, and I am forced to hold the power button and reset manually.

    This freezing when I try to wake seems to happen when I leave the machine alone (in sleep mode) for more than 24 hours.

    Is anyone else having this issue? Is there a fix?

    I have already tried resetting the VRAM, SMC, etc.
     
  2. triple-tap thread starter macrumors 6502

    Joined:
    Feb 18, 2013
  3. triple-tap thread starter macrumors 6502

    Joined:
    Feb 18, 2013
  4. nambuccaheadsau macrumors 6502a

    nambuccaheadsau

    Joined:
    Oct 19, 2007
    Location:
    Nambucca Heads Australia
    #4
    Suggest booting and going into Recovery Mode to check out the external SSD b busing Disk First Aid. All drives, including SSDs can and do fail. Not a matter of if but when. Here is a link to running Recovery from Apple:-


    https://support.apple.com/en-au/HT201314
     

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