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Very weird P-state problem on Lion 10.7.5


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CoBrA2168

CoBrA2168

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Hey guys,

I've got Lion 10.7.5 running successfully on my Lenovo T61 notebook. I have a fairly stable system and everything seems to be working great.

However, I do have one minor issue that is really bugging me. When I sleep my computer without power plugged in and then wake it, my p-states seem to be getting incorrectly calculated. For example, by using HWMonitor I can see the speed of both of my cores of my dual-core processor. After waking from sleep (on battery), the speed of my processor will sometimes get stuck at 736Mhz. Even if I'm trying to watch an HD YouTube video, it will stay at 736Mhz, grinding my computer to a halt.

Plugging in power doesn't solve the problem, but if I plug in, sleep, and then wake again, it solves this issue. It is just very annoying, and was wondering if anyone had a solution. Note that sleeping ON power, and then waking, does not cause this issue.

Thanks!





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