Can I 'wake' my imac from sleep mode from a Remote Location ?

Discussion in 'iMac' started by easybullet3, Sep 8, 2016.

  1. easybullet3 macrumors newbie

    Jan 12, 2014
    I currently Remote Connect to my imac at home while I am at the office.
    I use a PC at work with Uvnc (Ultra-VNC software) to log on remotely to my iMac at home.
    My imac is already set up for remote access.

    i cant find a way to WAKE UP my imac at home if it has gone into sleep mode.

    I know I can leave it POWERED ON 24/7, but really I would prefer to let it sleep (to stop it over-heating) and then I want to Wake it UP remotely.

    is there any way I can do this ?

  2. HallStevenson macrumors 6502a


    May 1, 2012
    This started for me over a year ago. Once it goes to sleep, it can't be woke up remotely. I've had to set the iMac to never go to sleep if I want to remotely access it.
  3. maflynn Moderator


    Staff Member

    May 3, 2009
    I would do just that. I've don't have my iMac go into sleep mode at all.

    If your iMac is over heating just from being on, then there's something else wrong, as no computer should over heat while just being idle.
  4. tyche macrumors 6502

    Jul 30, 2010
    Wake on Lan (WoL) is what you want and can be called over the Internet if you set up rules into your network. I do this for a PC and use an iOS app to wake it up and rdp to it.

    Mac's support WoL however OSX has been known to have problems for people to get it work correctly over the years/versions. I've never tried myself.
  5. T'hain Esh Kelch macrumors 601

    T'hain Esh Kelch

    Aug 5, 2001
    OSX started having sleep issues and WOL issues from Lion and on, and they still haven't been fixed.
  6. HallStevenson macrumors 6502a


    May 1, 2012
    I have 'Wake on network access' or whatever the exact term is enabled on my iMac. I have WOL port-forwarded from my router to the iMac. I've tried an Ethernet connection (normally use WiFi). I've done a myriad of various "fixes" posted by others.

    The only solution is still the same: Set the machine to NEVER go to sleep.
  7. snorkelman, Sep 10, 2016
    Last edited: Sep 10, 2016

    snorkelman macrumors 6502a


    Oct 25, 2010
    when you get home does it wake if you hit a key on the keyboard (e.g. press Spacebar)

    if you really really want to do it, rather than just go with simple option of preventing the mac from sleeping, then you could always do something funky with a little nodeMCU WiFi board and an Arduino Pro Micro

    1 setup the nodeMCU to take a trigger accross the net and toggle one of its pins on and off

    2 program the Pro Micro to act as a USB keyboard (with Spacebar its only key)

    3 set the Pro Micro up so that any time it receives a signal on its Pin 5, it sends a space bar keystroke to the mac its plugged into

    connect the internet controlled output pin on the node MCU to pin 5 on the pro Micro, plug the NodeMCU into a USB charger, plug the ProMicro into one of the imacs USB ports

    Trigger the node mcu accross the web, the proMicro sends a spacebar keypress to the mac its plugged into and the mac wakes up.

    Cost around 10 or 12 uk pounds Ridiculously complicated and easy peasy at the same time :)
  8. Enrico macrumors 6502


    Feb 6, 2007
    Milano / Roma
    Does anyone get WOL to work on Mac OS Sierra?
  9. thassman macrumors newbie


    Nov 11, 2015
    Yes WoL works with this little hack, i use it reliably with teamviewer.
    Only issue for me, that i still haven't figured out is, it sometimes just wakes up by itself or wakes up if i get an imessage.

    So use at your own risk:

    sudo nvram boot-args="darkwake=0"


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