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All replies
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Helpful answers
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Dec 4, 2012 1:06 PM in response to Rudeboy23by sanjampet,Try closing all applications before putting it to sleep if it still does it maybe there is a battery issue going on, you should take it too Apple to have it checked out.
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Jan 22, 2013 7:03 AM in response to sanjampetby Myk,I get this on the new desktop iMac. Never seen it before. I thought it was related to the wireless mouse sleeping. It can take about a minute to 'fire up' if the iMac has been sleeping a couple of hours.
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Jan 22, 2013 7:11 AM in response to Rudeboy23by Lexiepex,You are going to do the "pram" reset:
1.Shut down the computer.
2.Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
3.Turn on the computer.
4.Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
5.Hold the keys down until the computer restarts and you hear the startup sound for the second time.
6.Release the keys.
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Mar 11, 2013 8:55 AM in response to Lexiepexby Myk,I thought this problem had resolved itself but it appears it hasn't. I've tried the PRAM solution but nothing.
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Mar 11, 2013 8:59 AM in response to Mykby SwankPeRFection,This is an OSX issue. Update DL1609 changed the PMSET behavior to introduce hibernation on a system that's plugged into power and sleeping for more than 7 hours. On wakeup after it enters that state, it'll recover like that. If left sleeping on battery, it won't do this. A few of us have been harping on Apple to resolve this behavior issue, but if it bothers you that much, you can issue the following command to keep it from happening.
Open up Terminal and type in sudo pmset autopoweroff 0 and enter your password when asked.
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Mar 18, 2013 2:32 AM in response to SwankPeRFectionby Myk,Thanks for the reply.
Since your reply my Mac seems not to be doing it anymore. I didn't do anything, left it running SETI as I always do and the 'problem' has gone away for now.....
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Mar 18, 2013 6:57 AM in response to Rudeboy23by Lexiepex,how many gb ram do you have? do you have a HDD as boot disk or a SSD?.
Yu may have to set the hibernatemode to 0: that means that there is no image of all your Ram written to the internal OS disk: this image (same size as your ram) is read when awakening, that may take some time: for example if you have 16GB Ram, there is a 16GB file to read into ram when awakening.
By setting the hibernatemode to 0 this is not happening, and you can delete the sleepimage from the disk, it will not be written again.
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Mar 18, 2013 8:24 AM in response to Mykby SwankPeRFection,Myk wrote:
Thanks for the reply.
Since your reply my Mac seems not to be doing it anymore. I didn't do anything, left it running SETI as I always do and the 'problem' has gone away for now.....
If you left SETI running on it, then the system won't sleep. If it won't sleep, it won't count down to 4 hours on AC power during sleep and won't enter hibernation.
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Mar 18, 2013 8:27 AM in response to Lexiepexby SwankPeRFection,LexSchellings wrote:
how many gb ram do you have? do you have a HDD as boot disk or a SSD?.
Yu may have to set the hibernatemode to 0: that means that there is no image of all your Ram written to the internal OS disk: this image (same size as your ram) is read when awakening, that may take some time: for example if you have 16GB Ram, there is a 16GB file to read into ram when awakening.
By setting the hibernatemode to 0 this is not happening, and you can delete the sleepimage from the disk, it will not be written again.
That's actually a bad suggestion because if you set hibernationmode to 0, that disables the system's ability to "safe sleep" during times when it runs super low on battery power. If you set that mode to 0, OSX will force shut down/crash each time the system sleeps and runs out of power. It'll be a dirty shutdown of OSX.
As I said before, the proper way to handle turning off this hibernation entry is to simply disable the setting that's triggering it, either Standby for battery profile or Autopoweroff for AC profile. People who have hibernatemode 3 should leave it at 3.
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Mar 18, 2013 8:37 AM in response to SwankPeRFectionby Lexiepex,Maybe, but hibernatemode is 3 by default, doesn't do anything safer than hibernatemode 0: read about hibernatemode, mostly on sites that deal with ssd.