iMac not waking for network

Discussion in 'iMac' started by cosmichobo, Aug 8, 2014.

  1. cosmichobo macrumors 6502

    cosmichobo

    Joined:
    May 4, 2006
    #1
    G'day,

    I recently upgraded my early 2009 iMac, and 2009 MacBookPro to Mavericks.

    Both machines were then able to be woken remotely for screen sharing/data transfer from sleep.

    The iMac however has stopped waking... A few times lately when I have gone to use it, it has been powered down (a few times because a breaker had been tripped... but other times without apparent cause).

    Having made no changes to the settings... why would the iMac suddenly have lost the ability to wake from sleep for network activity?

    What's the steps to try and resolve this issue? Full re-instal of the OS??

    Thanks,

    cosmic
     
  2. eduardrw, Aug 8, 2014
    Last edited: Aug 8, 2014

    eduardrw macrumors 6502

    Joined:
    May 20, 2013
    #2
    Did you check the box "wake for network access" in System Pref - Energy saver?
    Do you use an apple router? If not your milage may vary.

    I have a 2009 iMac 24" - wake up works fine - I am using an apple router.

    Sometimes a router reboot - followed by all computers reboot will help.
     
  3. jg321 macrumors 6502

    Joined:
    Aug 29, 2012
    Location:
    UK
    #3
    This happened to me. Worked fine on Mountain Lion, stopped after Mavericks update. Yosemite seems to have fixed it since the public beta. We're not alone here, lots of reports of this.

    I'll try and find the Apple discussions thread. Never did get a resolution, just stopped mine from sleeping.
     
  4. stridemat Moderator

    stridemat

    Staff Member

    Joined:
    Apr 2, 2008
    Location:
    UK
    #4
    My iMac never used to network wake from sleep when on WiFi. Now I have hard wired my house it seems to work great though.

    How are you trying to connect?
     
  5. jg321 macrumors 6502

    Joined:
    Aug 29, 2012
    Location:
    UK
  6. cosmichobo thread starter macrumors 6502

    cosmichobo

    Joined:
    May 4, 2006
    #6
    My iMac is physically connected to my 2011 Airport Extreme Base Station.

    I am then trying to wake it either from my G4 Mini or MBP via wifi.

    The iMac also has wifi turned on... um... though not sure why I did that...

    As suggested, I restarted the AEBS, and restarted the iMac, and this morning the iMac woke for me... So, maybe problem solved...

    I'll keep advised.
     

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