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Everytime the screen dims to save power after my laptop has been idle, the fan starts spinning really fast and the cpu temp rises to about 60 deg C. When I move the mouse to undim the screen, the fan returns back to normal.

I'm running Ubuntu 12.04 64-bit on Sony VAIO laptop

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1 Answer 1

Reset to default
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If you don't have the time/skill to debug this, simply turn off screen dimming from "Brightness and Lock" in System Settings:

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