2013 iMac 27" freezing on wake from sleep

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

  1. triple-tap macrumors 6502

    Feb 18, 2013
    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

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

    Feb 18, 2013
  4. nambuccaheadsau macrumors 68000


    Oct 19, 2007
    Nambucca Heads Australia
    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:-


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3 March 29, 2017