![]() ![]() If kernel_task hogs the processor only on AC power, charging is causing the machine to heat up. If the computer is portable, test with and without the AC adapter connected. Note that if the problem is caused by a sensor, there may be no actual overheating or undervoltage. ☞ the malfunction of a cooling fan, a temperature sensor, a voltage sensor, or some other internal component ☞ a worn-out or faulty battery in a portable When it gets high temperature readings from the hardware, or low voltage readings from the battery of a MacBook, the kernel may try to compensate by interrupting the processor(s) to slow them down and reduce power consumption. ![]() Below are some possible causes for the condition. The kernel is using excessive processor cycles. ![]()
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