Well, as macOS/OS X has a very known issue that is, system cannot correctly put itself into sleep/hibernation/shutdown when the battery level is lower than critical state. Once the battery is drained out, the system will halt instantly and cause data lose. So, I started this project with Objective-C to provide a better sleep mode for both MacBook and hackintosh laptops. This method is better than Apple's original low battery policy, I will explain this later.
And also, as it's name, it will provide more powerful/flexible power management functions/policies as you like to control the system.
Notice: Kext version still need to be refined due to my intention. I want to make this project in a more general situation.
Since, I am too busy these days to finish assignments and my final exams will come soon, I may update my Github slow, but I can assure you that great things will happen, and when they happen… they will happen here.
Again, thanks/credit for Hongyi Zhou who patiently taught me C and Java in such a short period of time. Without his help, this project would not be possible for me
to write it using Objective-C. Thank you, I am really appreciate.
So now, let's turn to my work: IOPowerManagement.
For Objective-C version(recommended now):
Download the latest version installation package/directory by entering the following command in a terminal window:
git clone https://github.com/syscl/IOPowerManagementBuild the project by typing:
cd IOPowerManagement/
clang IOPowerManagement.m FixedQueueUlong.m -fobjc-arc -fmodules -mmacosx-version-min=10.6 -o IOPowerManagementThen place com.syscl.iopm.plist in /Library/LaunchDaemons/ by typing:
sudo cp -RX ./com.syscl.iopm.plist /Library/LaunchDaemons/Installing both program and service for macOS by typing:
sudo cp -RX ./IOPowerManagement /etc
sudo launchctl load /Library/LaunchDaemons/com.syscl.iopm.plistReboot to enjoy your macOS/OS X :)
For kext version, just place it under /Library/Extensions or /System/Library/Extensions by typing:
sudo cp -RX ./IOPowerDeploy.kext /Library/Extensionsor
sudo cp -RX ./IOPowerDeploy.kext /System/Library/ExtensionsThen load kext by typing:
sudo kextload /Library/Extensions/IOPowerDeploy.kextor
sudo kextload /System/Library/Extensions/IOPowerDeploy.kext2016-12-14
- Merge code from @schdt899 credit @schdt899
2016-10-28
- Added prevent sleep case, now the project performs more reasonable:
- If battery is lower than the crucial value, say 6%, then IOPowerManagement(IOPM) notify the system
- to sleep/hibernation/shutdown/restart. But at this moment, users do not want to sleep the system, they may
- have mission still have to complete and they have confidence that the battery life can last that
- long, so, they simpley move their mouse/keyboard to wake the system from sleep that IOPM just sent
- This time, IOPM will record the time stamp, and prepare for the next sleep, if user again move their
- mouse/keyboard to wake the system up, then the project will consider users do not want a sleep at this time
- so, IOPM will stop to issue the sleep event.
- Seems fairly simply right? But the logic is not that easy. Difficuties that I face and finally solve during
- this progress is:
- I never shut my laptop, and if IOPM sleep notification has been blocked/prevent, I still want this program persit monitoring once my battery percentage lower than 6%, what should this program behave? Should it
- return?
- How to storage those time? Which form is more efficient and easier to manage?
- The key point to detect if user prevent the sleep?
- ...
- All the above answers has included in 2016-10-28's update, please see the changes. :)
2016-10-22
- Released source code
- Optimised source code
- You can config IOPowerManagement through com.syscl.iopm instead of recompile it. Actually, I tend to like compile version, since config
- will reduce the speed of the program.
2016-10-2
- Initial Commit
- Tested successfully on Dell Precision M3800. More improvements will be added soon
- Battery percentage routine comes into IOPowerManagement