Because I often travel and want to remote into my machine, and because I'd rather not disable sleep completely, and because I haven't found any way to wake the machine remotely after it has entered safe sleep, my only option remains to disable it. After reading through this discussion , I have set up my power options thusly:. Notice that autopoweroff is set to 0. Despite this, the computer still enters safe sleep and thus wake on lan stops working after a period of time 4 hours, which I believe comes from autopoweroffdelay of seconds. Apparently whatever it does appears to work with my configuration even though the magic packet sent through the router doesn't.
Home Questions Tags Users Unanswered. Ask Question. After reading through this discussion , I have set up my power options thusly: Active Profiles: Any ideas on why this is still happening, or what I can possibly do to rectify it? Jeff Evans. Use -c instead of -a to disable auto poweroff only when it's plugged in.
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Machine was fine under Lion, most definitely related to that upgrade, but still unclear how. Reset SMC http: Reset PRAM https: Is this issue more widespread?
Troubleshooting sleep in OS X
Seems that others are reporting it on a variety of SSD macs, but that could be a red-herring. Posted on Jul 28, 5: Page content loaded. Jul 28, 8: Of course, this risks running the battery down since the contents of memory aren't saving safely out to disk, so it's not a long-term acceptable solution.
Jul 28, 3: I have instaled "SmartSleep" app and change hibernate settings to sleep only. I Think it has the same effect of your command. My Imac 27 is working better without freezing. I had the same issue when i did the upgrade from Snow Leopard to Lion and used the same software. So, after I confirmed that worked, I wanted to test more variables, so I set hibernate mode back to 3 safe sleep, save to RAM and disk.
And the issue has gone away for me! At least for now, for a few hours of playing, sleeping, letting it sit on both power and disconnected.
How to hibernate Mac OS X Mountain lion on Macbook Pro | TechVisionblog
Jul 28, 4: I am having problems with Mountain Lion waking from sleep also. I dont feel comfortable modifiying system settings for fear of screwing something else up. They better have a fix out for this soon!!!
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Jul 29, Well, Jeff. Changing the hibernate mode is a pretty well-documented and "safe" thing to do. There are lots of instructions online that will step you through it, only takes 10 seconds and may well solve your problem.
I really wish I'd checked to see what my hibernatemode was set to when I was having problems before I manually reset it. But this simple fix has been working for a couple days now, so I'm pretty optimistic it was related to those pm settings. Jul 29, 4: Any changes you make are not supported.
Mountain Lion Wake from Hibernate
If you choose to do so anyway, we recommend using one of these three settings. For your sake and mine, please don't use anything other 0, 3, or The sys- tem will not back memory up to persistent storage. The system must wake from the contents of memory; the system will lose context on power loss. This is, historically, plain old sleep. The system will store a copy of memory to persistent storage the disk , and will power memory during sleep.