Mac OS X
Q: powerd in Activity Monitor is using 100% CPU, MacBook sounds like a jet lifting off
Ever since I upgraded from Mountain Lion to El Capitan on my Late 2009 MacBook, powerd in Activity Monitor often uses 100% CPU for more than 5 minutes.
Quitting Activity Monitor helps, only until I open AM again, which I have open all the time. Restarting helps, but it just happens again and again, especially running iTunes.
I recently installed a 1TB SSD from OWC, and clean installed El Capitan with Migration Assistant. I have never used Clean My Mac App. I read something about Nap App causing this problem.
Any thoughts anyone?
MacBook, OS X Mountain Lion (10.8.5), late 2009 model
Posted on May 31, 2016 10:28 PM