iMac sleeps too soon since Mountain Lion

Discussion in 'macOS' started by Steppy, Jul 28, 2012.

  1. Steppy macrumors member

    Nov 21, 2011
    Southampton, UK
    I have a mid 2011 iMac i5 27'' on which I have installed Mountain Lion.

    Everything is working great, except for one thing.

    I have my Energy Saver set to the default Sleep of 10 mins of non use. Whenever I was downloading anything under Lion it would always stay awake until the download had finished, even if that was 2 or 3 hours. Since changing to Mountain Lion my iMac sleeps exactly as per Energy Saver settings regardless of the fact that there is network/hard drive activity.

    Is there a setting somewhere which needs tweaking? I have tried checking/unchecking "Wake for Network Access", but that doesn't make any difference.

    Any ideas?
  2. Matthew Yohe macrumors 68020

    Oct 12, 2006
    What browser are you using to download things?
  3. Steppy thread starter macrumors member

    Nov 21, 2011
    Southampton, UK
    Safari & Opera and it does it on both.
  4. pdafan macrumors member

    Aug 2, 2011
    Just realised that I have this problem as well.
    ML sleeps when I have downloading job.

    This does not happen in Lion.
  5. neverupgrade macrumors newbie

    Jul 31, 2012
    If it helps my week old MBA 11 goes to go into full sleep after 5 minutes (the setting for display sleep).

    Wake for Wi-fi does not work as before (development webserver).

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