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I can't modify my laptop brightness. Is it a BIOS problem? It works in win 7, but doesn't work in Ubuntu. It's an Acer Aspire 5750-6842 laptop with Intel HD graphics 3000 video chipset.

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Might be an issue common to aspire line of laptops, give this question a look and see if any of the answers there help. – Oyibo Feb 1 '13 at 8:01

Here is how I solved a similar brightness issue on my Toshiba Satellite the easy way:

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