Ubuntu – Brightness issues on a Samsung N220

11.10brightness

I updated my Ubuntu to 11.10 a few hours ago and the screen brightness keeps going up to the maximum and down to the minimum all the time on it's own. Sometimes it stops for a few minutes. And when I try to set it myself manually or when a few minutes has passed, it starts up again.
(I'm new in trying to fix my own problems, so I might not get the obvious things right away.)

I now restarted a couple of times and now I'm using a newer version of kernel and the brightness is now constantly down and can't be set manually.

My laptop is a Samsung N220. I bought it a little over a year ago. I still have Windows 7 Starter on it (it was originally on it), but I had Ubuntu put on it from the start.

Best Answer

sudo add-apt-repository ppa:voria/ppa
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install samsung-backlight

please note that in 13.04 that last command has changed to 

sudo apt-get install samsung-tools
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