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Discussion in 'MacBook Pro' started by lscangus, Dec 15, 2008.
my mates MacBook sleep instantly after the lid had closed is your unibody like that?
Mine's a lot quicker at sleeping since the EFI and SMC update
Newer macs "Safe Sleep" which means they dump the contents of the ram to the Hard Disk in case power is cut while sleeping. Considering newer machines have several GB of ram, alot of which can be active, it can take a while to write all of that to the disk. This is also the reason it is not safe to move a "sleeping" Macbook until the sleep light is actually pulsing.
If it bothers you, there are apps out there that will let you revert to the normal sleep where the ram is NOT copied to the HDD. This will let the machine enter full sleep instantly but doesn't have the safe backup. (I prefer this way since I don't give a damn about that 1/10,000 chance my battery dies while sleeping.)
How can i disable the safesleep? Coz it really bothers me a lot, waiting it to dump 4GB data to my harddrive
sudo pmset -a hibernatemode 0
sudo nvram "use-nvramrc?"=false
Then restart your machine and if you want to delete the file where the ram get's written, 4gb size file open terminal and type:
sudo rm /var/vm/sleepimage
sudo ln -s /dev/null /var/vm/sleepimage
Thx for that, i have downloaded a software called smartsleep. Seemed to do the job.
pmset -g | grep hibernatemode
to find out your mode
and sudo pmset -a hibernatemode #
# can be
0 - regular sleep
3 - new deep sleep (sleep + 4gigs of ram writing)
5 - dunno
to get back 4 gigs of free space
sudo rm sleepimage
I use sudo pmset -a hibernatemode 0
It sleeps instantly, saving my battery and saving 4 gigs of free space...
There is like a 1/10000 chance my battery will suddenly die for no reason... also just make sure you save your work before you sleep.
Mine takes about 15 seconds or so to sleep, although it doesn't really bother me, unless it's running at 70c it's pretty safe to put it in the case and walk off with it still dumping to the HD.
Thx for that, smartsleep is useless.
I now set it to 0
I seriously doubt that writing 4 gigs worht of data several times a day is worth the off chance that you might regain some lost work compared to the harddrive thrashing.
What Apple needs to do is implement a concious hibernate option. IE, add a menu option for hibernate in the apple menu.
Trying swapping your battery out while it's sleeping
Unless Apple got rid of it in the MBP's, they have a small built in battery that can power the MBP while sleeping while someone is swapping out batteries( used to be in the 15" and 17" Powerbooks).
Smartsleep is the software i download, the feature is called Safesleep.
That will be interesting to find out, i will try that out, on previous gen MBP you got 60 seconds to pop your battery back in
Yeah that battery was replaced with the hibernation
It used to be that if you ran out of battery power, the computer would just go into regular sleep; now it goes straight into hibernation.
Just installed SmartSleep preference pane on my Unibody MacBook running 10.5.6. Works great! Instant sleep.