Take the 2-minute tour ×
Ask Different is a question and answer site for power users of Apple hardware and software. It's 100% free, no registration required.

Is there any known reason why I cannot wake up sleeping Macs with Apple Remote Desktop?

  • I have checked the Energy Saver Prefs "Wake for network access".
  • I have checked the Sharing Prefs "Remote Login" and "Remote Management".
share|improve this question
add comment

2 Answers 2

"Wake for network access" refers to the system receiving a special "Wake On Media" or "Wake On LAN" packet from the local ethernet network.

Simply trying to connect with a network application will not wake it up. That's because while the computer is sleeping, it cannot process any network traffic. WOM works at the hardware level of the ethernet card: the card stays powered on and when it sees an ethernet packet with its MAC address and a certain byte pattern, it wakes up the computer.

Because WOM is based on ethernet frames, it generally cannot not work by itself outside of your local LAN. Some routers provide utilities which let you remotely instruct the router to generate a WOM packet, but not typically consumer grade routers.

share|improve this answer
add comment

Have you checked this archived kbase article? In my experience, wake-on-LAN has never worked very reliably with ARD 3. At a minimum you need to be on the same LAN subnet.

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.