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Hi everyone i'm having a problem that for what i have seen its very common with the latest version of ubuntu.

So I updated my graphics drivers on my laptop to the latest nvidia ones but now my brightness keys do not work anymore. I used Fn + F5 to lower brightness and Fn + F6 to increase it.

I have a Sony Vaio laptop model VPCCW25FL and my GPU is an Nvidia GT330M. I have been trying some of the solutions answered here but none of them seem to work. I'm really annoyed by this and it's a chore that every so often I have to run a terminal command to lower the brightness but after a while it increases again!

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Possible duplicate of Controlling Brightness in Sony Vaio SVE151A11W |Not Working| –  Eliah Kagan Jan 26 '13 at 17:08

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