Q: Computer do not hibernate when battery drained off
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Nov 22, 2014 4:38 AMby lpuerto,As I told you... I have already done something like that. Wipe all and install a clean copy of Mavericks. Then in a new user, without bring anything from my backup I leaved run off of battery... At least in that occasion I saw the bar
However, in that occasion I cannot say how it waked up... I sent it straight away to service.
And yeah! I have a usbstick with mavericks
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Nov 22, 2014 9:09 AMby lpuerto,Just a little theory...
As I told you, I have a fusion drive created... with the HDD in the optibay and the SSD in the regular drive bay.... I have read that there is some problems if you have this setup Fusion Drive on Macbook Pro & Hibernation problem.
I think that it could be cause because I have the SSD totally full except for the 4gb buffer. Then the system perform the sleepimage is storage in both disks due to its size, more than 4 gb.
When the mac wake up from safesleep tries to find the sleep image but it cannot be found because it is in both disk and the HDD does not have energy yet....
Am I right?
Thanks!
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Nov 24, 2014 6:14 AMby BobHarris,Based on the link you provided, it seems you are not alone with having Fusion/Hibernate problems.
If you haven't tried the PRAM reset and SMC reset, I would give them a try (based on the link you found, not sure that will help, but it will not hurt either).
If a home grown Fusion drive will not hibernate, I think you need to decide if you want Fusion or Hibernate more.
Keeping Fusion, assuming hibernate cannot be made to work, then you just need to stop running your battery down to zero, or when you think you might, make sure you save all your work so you do not loose anything.
If you want to stop using Fusion, then I see 3 options.
1) Put the OS and Apps on the SSD (assuming it is large enough), put your home Folder on the hard disk (variation on the theme is to just put your big folders on the hard disk (iPhoto, iTunes, etc...; these apps even have a preference to point to a different folder on another disk; for other large folders you may need to learn about Unix Symbolic Links).
2) Replace the SSD with a large enough SSD to hold everything, and either ignore the hard disk, or use it for backup, or use it for bulk storage.
3) Replace the HDD with another SSD and again balance your storage usage between the 2 disk using things like iTunes and iPhone preferences and Unix Symlinks.
You could also keep digging to figure this out, but keep in mind that every time you deep discharge your battery, especially just for testing, you reduce its overall life.
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Nov 24, 2014 9:08 AMby lpuerto,Hey!!!
Thanks a lot for the reply!!!
The funny thing now is I have been able to force the computer to "safe sleep" and wake up it (with loading screen included) using this app http://www.macupdate.com/app/mac/33476/safesleeponce. However, it was before I change the hibernation mode to 25.... before of that, on hibernatemode 3, the app was just able to normaly sleep the computer. I mean, y push a keyboard key and the computer just wake up. But, in that state there was not blinking light in the front. ¿? Standby mode? According to apple my computer do not have standby mode, but it appears as an option in the pmset ¿?.
Anyhow, when I changed to hibernate mode 25 the app was able to fully hibernate... Then, I have change to hibernate mode 3, and continues to be able to fully hibernate.
I have been trying to check if now normally hibernate, but I takes a lot of time to totally run out of battery. I mean, when it last one or two minutes to lost power, it turn itself to sleep. Not deep sleep. If I press a key, the computer try to restart one o two times. If put the power cord, the computer wake up, without loading screen (no reading image from disk) and returned to the state when it lost power. That behaviour last at least one hour or more....
Everything is very strange in general.... I will try to run out of battery tonight, and then I will leave the computer the whole night without plugin.
Let's see.
