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Possible Duplicate:
Disable autobrightness on Ideapad U460s (ubuntu)

My screen dims constantly on the U460s. I have tried everything on the control panel and several ideas on the system but it still keeps dimming. Any suggestions?

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marked as duplicate by Keltari, 8088, Mokubai, Canadian Luke, Nifle Aug 29 '12 at 21:32

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Try booting into Windows and using the Lenovo power management settings to disable the ambient light sensor.

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