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I have recently installed Ubuntu 12.04 on my Samsung laptop RV509 with Nvidia grahics card but brightness remain unchanged. How can I make the brightness control work?

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marked as duplicate by Raja, Oli Aug 12 '13 at 11:56

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.

What have you tried so far? –  SimplySimon Aug 11 '13 at 10:52
The answer to this question askubuntu.com/questions/38845/… may help you. –  SimplySimon Aug 11 '13 at 10:55

1 Answer 1

You can change it using xbacklight

Install it from terminal sudo apt-get install xbacklight

Change brightness by xbacklight -set <level>, where <level> is an integer ranging from 0 to 100 (lowest brightness to highest).

For example, to set medium brightness one would use

xbacklight -set 60
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