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Old Apr 24, 2013, 09:42 AM   #1
epicwelshman
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kernel_task causing 70% CPU usage???

Hello all,

I'm having problems with my late-2011 15" MBP. After a couple hours of usage the computer becomes very, very slow. I noticed in the Activity Monitor that the kernel_task is using 500% of the CPU (seems weird, but anyway), causing my system CPU usage to bounce to 70%.

In case it's relevant, my MBP battery is 100% dead. We've ordered a new one, but until it comes I'm running on A/C power exclusively.

Any ideas of how to solve? Screenshot is below.

Cheers.

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Last edited by epicwelshman; Apr 24, 2013 at 10:49 AM. Reason: Added screenshot
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Old Apr 24, 2013, 11:04 AM   #2
epicwelshman
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I've also tried resetting the SMC, with no luck. I get about an hour of good usage out of the laptop before it grinds to a halt.
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Old Apr 24, 2013, 11:42 AM   #3
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See this thread - it seems to fit your case.

http://www.rme-audio.de/forum/viewtopic.php?pid=83416
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