![]() ![]() We have not tested this fix and can't say whether it will work for you. Petersson's initial post focused on Mac OS X Yosemite, though he later followed it up with updates for later versions of macOS. In his case, it was likely caused by a dodgy sound card. However, if you've tried everything else and are still seeing kernel_task causing high CPU usage, this is a solution you may want to try.ĭeveloper and blogger Viktor Petersson has written extensively about kernel_task and the issues around it. The final solution here is a bit of a risky one: removing Apple's own kernel extensions. Still Have High CPU Usage? What to Do When All Else Fails System Integrity Protection, or SIP for short, stops apps from injecting code into Apple's own apps, as well as writing to certain parts of the drive that Apple deems important to system security. Starting with OS X El Capitan, Apple introduced a new security feature that broke a number of third-party modifications. For the rest, head to System Preferences and look for any third-party preference panes. Others may include a PKG uninstaller file you need to run. For some apps, that simply means moving the application file to the Trash, then inputting your admin password to allow the change. The best way to remove these, is to uninstall the associated software. Meanwhile, third-party drivers will have the developer name in them, like this: Īnd also like this one: ch.tripmode.TripModeNKE All Apple extensions will look like: com.apple. ![]() This will show what kernel extensions are currently loaded. Then, run the following command: kextstat To dive into this, reboot your system as normal and launch Terminal. Safe Mode loads only the required kernel extensions, so if the problem doesn't occur in this environment, it points to an issue with a third-party kext. To do this, restart your machine and hold the Shift key as it boots. ![]() One quick way to check if a third-party kext is causing your kernel_task issues is to reboot your machine into Safe Mode. ![]()
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