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phaselocked

macrumors newbie
Original poster
Dec 5, 2011
23
6
Hey guys,

Lately I have an extremely high CPU usage by kernel task (500+%). I've noticed that I can only reproduce this when 1. connected to an external screen 2. also connected on a USB hub. As soon as I use my Macbook Pro Retina 15" (late 2013 GT 750M) without all the connections the problem goes away.

Might this be caused by the hub?

Regards,
 
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grahamperrin

macrumors 601
Jun 8, 2007
4,942
648
Yeah, I had that more than once in the past with a MacBookPro5,2. I watched the cleaning by an AASP, it's amazing what gets inside …
 
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