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No Wake-on-LAN possible since updating to ML

91794 Views 281 Replies Latest reply: Apr 11, 2014 5:32 AM by Abraham Zabih RSS Branched to a new discussion.
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SteffenKaiser Level 1 Level 1 (0 points)
Currently Being Moderated
Jul 31, 2012 1:01 AM

Hi everybody,

 

since updating from OS X 10.7 to 10.8 (clean install), Wake-on-LAN does not work anymore. Setup: Mac mini (Early 2011) connected to Time Capsule (2nd gen) via devolo dLAN. Mac mini goes to sleep after 30 minutes and eventually disappears from the network. Sending Wake-On-LAN packets or using Back To My Mac fail, it simply won't wake up.

 

Wake-on-LAN worked smoothly under 10.7 after some problems. Any ideas?

 

Thanks and regards

 

Steffen

Mac mini, OS X Mountain Lion
  • Alfred DeRose Level 5 Level 5 (5,590 points)
    Currently Being Moderated
    Jul 31, 2012 1:07 AM (in response to SteffenKaiser)

    If you haven't done so already, check System Preferences > Energy Saver to be sure the Wake for Ethernet Network Access is selected under the Power Adapter profile. 10.8 reset my preferences on installation. Also note that Wake on Lan is not available when on battery power only. I don't recall if this was the case or not on Lion.

  • Alfred DeRose Level 5 Level 5 (5,590 points)
    Currently Being Moderated
    Jul 31, 2012 1:39 AM (in response to SteffenKaiser)

    Just thinking out loud here. You are on a wired connection? Not WiFi?

  • Alfred DeRose Level 5 Level 5 (5,590 points)
    Currently Being Moderated
    Jul 31, 2012 1:46 AM (in response to SteffenKaiser)

    Others appear to be having the same issue. Have you tried resetting the SMC and PRAM? You can do so following the steps HERE.

  • Alfred DeRose Level 5 Level 5 (5,590 points)
    Currently Being Moderated
    Jul 31, 2012 2:04 AM (in response to SteffenKaiser)

    I sometimes have a problem with my Mini losing WiFi connection but haven't care enough to to investigate since I rarely need to connect remotely. DHCP might be the issue as you suggested so I'll look into that myself.

     

    Might be worth trying a direct line into your router just to see if the pwer line connection is somehow contributing to the problem. i doubt it, but you never know.

  • Randall Jenkins Level 2 Level 2 (230 points)
    Currently Being Moderated
    Jul 31, 2012 1:59 PM (in response to SteffenKaiser)

    I'm on a Mac mini connected to an Airport Extreme and experiencing the same issue with wake for internet access not working. It worked perfectly before, and now it does not.

     

    My Macbook Pro appears to be working just fine with the same setup.

  • Alfred DeRose Level 5 Level 5 (5,590 points)
    Currently Being Moderated
    Jul 31, 2012 2:12 PM (in response to SteffenKaiser)

    Well, not what you were hoping but at least you narowed it down. I expect this is not the intended functionality and that it will be patched - hopefully soon.

  • problemss Level 1 Level 1 (0 points)
    Currently Being Moderated
    Jul 31, 2012 9:48 PM (in response to SteffenKaiser)

    I am having this same problem. Once I upgrade I couldn't figure out why all my ports were giving me time out errors. I have services running on my mac that I access over the internet. After thinking about it, I narrowed it down to the sleep. Before ML my computer would wake up and I could connect fine. Now it is sleeping and will not wake up. I will have to change it to never also......

     

    Guess the "power nap" changed something.

  • Randall Jenkins Level 2 Level 2 (230 points)
    Currently Being Moderated
    Aug 1, 2012 3:38 PM (in response to SteffenKaiser)

    I am wired to the AirPort Extreme. I can go wifi if anyone thinks that could solve it.

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