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I just installed ubuntu 11.04 on my samsung NF208 and at first it worked just fine, the fn key was all alright except the fn+f9 (I guess that's normal as it opens up a samsung-specific software). Yesterday I updated my ubuntu and after I rebooted the system, the brightness control key (fn + up/down) just won't work. It does display the brightness indicator and the indicator itself is changing when I press the fn + up/down, but the display won't change a bit. please help me, I'm new to this ubuntu thing :)

p.s I experienced same thing when I use win7 after I installed an update for Intel Graphic Driver. I managed to rollback the driver and it worked again. Do I get the same problem here in ubuntu? then how can I rollback the driver in ubuntu? or is it a totally different problem?

thanks for your concern.. :)

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closed as too localized by Luis Alvarado Mar 14 '13 at 16:57

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

You cound try to downgrade the driver package. Did you install the driver from the repositories? If yes you can downgrade a package using:

sudo apt-get install package=version

I think you are looking for the package xserver-xorg-video-intel. To find out your current version, use

dpkg -s xserver-xorg-video-intel

Information on the package can be found here.

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thanks, now it works again :D – pradityan Nov 18 '11 at 10:45

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