- open up a terminal
- type 'cd /Library/Preferences' at the prompt
- sudo vi com.apple.PowerManagement.plist
- edit the numbers between the <integer></integer> tags.
- save your changes, logout and log back in.
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If you're like me and like to save as much battery as possible you might like this. You may have noticed that the shortest time for sleep is 5 minutes. this can be changed in the file /Library/Preferences/com.apple.PowerManagement.plist:
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Hint Options
Take care of your Display Sleep time
While a display does wear off when it is always on and uses battery life on a laptop, it is probably not wise to reduce the display sleep time to a very short period as suggested.
The Problem is that the display backlight will wear off quite fast when your display turns on and off very frequently. I wish I would have knows earlier, as the maximum brightness of my iBook is a lot less then it used to be. ralf
thie works with hard disk
i was able to get the hard disk to spin down
changed 10.1.15
I noticed since upgrading that my prefs didnt stick. The file to edit is here now:
changed 10.1.15
Yes, I have also noted the change, as well as, I don't know if its just a program I had added prior or what, but an area for battery and ac, so you don't have to shutdown your HD after 1 minute if your on the AC, I don't know if it works, I haven't really kept my eye on it, but it is not implamented in the sys preferences. |
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