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I have an issue with the screen brightness of my computer. I have a Dell Inspiron 7520. I have a AMD Radeon HD 7730m 2gb with a Intel HD 4000, I am currently using the kernel lastest kernel from X-edgers I believe. 3.7 something like that. Anyways, this isn't the problem. I'm sure there's a way to change the level of brightness from the terminal, or even just change the range, cause it looks the be range that isn't enough. In fact, when I try to lower the brightness, it drops but slightly but it doesn't go lower on the bar. If I want to make the screen go brighter, well it can't because it is at the max.

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Well try this link http://www.refreshit.info/2012/08/solved-brightness-increase-and-decrease.html I have fixed the brightness problem ..

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  • it doesn't work for my model, I am getting errors. I don't have the same line than you also. instead of splice I got splash. I have tried to change it. it doesn't do any good. but it works, not good enough though for me.
    – Jeff Labonte
    Jan 31, 2013 at 14:20
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this is unfortunately no answer to your problem, but i have the same laptop model and i also tried out the 3.7 kernel, because i have problems with the fan which is all the time running at full speed (did you solve that?). i experienced the same thing with the brightness. i swiched back to the 3.5 kernel. there it works fine.

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  • Yes, I solved the fan part with a few script I found in here askubuntu.com/questions/251705/… I have also solved the brightness control using the last AMD drivers which allows me to use the switching too
    – Jeff Labonte
    Mar 13, 2013 at 3:32

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