Q: Can't wake Lion over wifi (or ethernet) using iPad and home sharing.

FYI, darkwake=0 (not darkwake=o as you posted), works with SL, but not ML, but, it does not help with WOL, what is does is force the Mac to fully wake (and therefore, observe the sleep preferences in the Enegy Saver settings)

Correction, meant to say "works with Lion, but not ML"

I made another try. My MacBook Pro is working fine. I can wake on lan, and even if it sleeps for a week it is still connected to the network.

I cannot say the same about my iMac. 2 or 3 hours after it is asleep, I cannot wake on lan and it is not connected to the network.

To solve that, I'll try to connect iMac to my 2.4GHz network instead of the 5GHz. My MacBook Pro is on the 2.4GHz and it works fine, so I'll make à try for the iMac and I'll let you know.

With ML, I coundn't get my mini to stay awake.  I would wake it with a WOL, but it would sleep in less than a minute (the preferences in Energy Saver are ignored).  I thinkk that this is due to the new 'power nap' feature in ML.  I use my mini as a music server, so I could not use caffinate to set an assertion to prevent sleep.

darkwake=0 had no effect with ML

I had no choice but to go back to Lion on my mini.

Hi,

the problem persists with ML 10.8.1. Sometimes it works, but especially when the iMac is suspended for hours, wake on wlan does not wake . . . I will file a bug report:

http://www.apple.com/feedback/macosx.html

regards

-j

As far as I can tell, I've done every solution on this thread to get this solved. I gave up a while ago and just resorted to setting my sleep time to 3 hours and getting my mac to schedule wake up in the evenings. So I tried this as I thought what have I got to lose. It seems to have worked for me too so im very pleased. Hopefully it will work in a couple of days or after longer periods of sleep but for the moment it solved the problem, thanks loïcfernandezcastrillion

Is it still working? Cause even on the 2.4GHz, sometimes it disconnect while asleep. It's very strange. Even on the 5GHz network, sometimes it sleeps for a few days, and it is visible and reachable over network. And sometimes, just after 3 hours or less of sleep, it disappears from the network.

I have no idea how to solve it.

Maybe if I change the DHCP time from my router. The thing is: my MacBook Pro has no problem whatsoever, so the iMac network settings is the problem.

For the moment its still working so I'm not going to change anything and hopefully it will continue to work!

So, you just changed from 5 to 2.4GHz?

No sorry, must have got confused. I'm using 5ghz airport extreme. All the latest updates. Lion, latest update on a Mac Pro. All I did was turn off "find my mac" in the iCloud settings as you suggested in your previous post.

Yes but even with that, sometimes it continues to drop... Let me know after a few weeks of use.

Is it still working for you?

Nope stopped working. Funny thing was, my appletv was waking up really regularlary to check in with the network like every 5 mins but while this was happening my mac pro was always available on the network. I reset my appletv and it no longer wakes every 5mins (it still wakes to check in with the network though) but now my mac pro doesn't wake anymore!?

Wonder if the appletv is to do with the problem?

Maybe it's the Apple TV, because sometimes when I use it, I noticed that my iMac wakes up (without the screen on) and goes back to sleep after a few seconds. But after that, the iMac becomes unvailable.

So I restarted all my devices, (router, time capsule, iMac, etc) without the Apple TV, to check if it does something wrong on my network.

Ok so, I unplugged my appletv that was waking up loads. It has been unplugged for 24 hours and I haven't woken my mac pro in that time manually or otherwise. I have just gone to wake with the apple remote app on my iPhone and it sees it and has woken my mac (screen still off) fine. I will continue to leave the appletv off for a further two days to see if this still works.