I am new to ubuntu, I do not know what my problem is my screen dims every five seconds even if I am moving the mouse, it keeps dimming until I have a black screen, totally dark, I think it started since the last updates yesterday, I have read trhough the internet since yesterday but I still dont know what is triggering this, the screen brightness comes back when I press any key and starts dimming again in five seconds..
I am using ubuntu 12.10 I have hp 435.
pleasae help.
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