I couldn't change brightness of my Sony EH18FA laptop with Ubuntu 13.04. My laptop has Nvidia Geforce 410M GPU.

I am using Ubuntu 13.04 along with Windows 7 Home Basic.

The brightness can't be changed using (Fn + F6 or F5) keys nor from system sittings, although the slider changed but the brightness of screen not changed.

I tried a lot of recommended solutions but no one of them worked. I am afraid that I need install some drivers or something like that.

  • Can you try to change the brightness with Brightness Controller?
    – user45853
    Sep 30, 2013 at 18:02
  • yeah, it works thank you very much :) but only through this app. So I can't change the brightness using the hotkeys as fn+f5 nor from the system settings. Is there another way to solve the problem ? and thank you again for your help :)
    – mohsen
    Sep 30, 2013 at 18:19
  • I think that only way now is with using this controller or using xrandr in command line.
    – user45853
    Sep 30, 2013 at 18:36

1 Answer 1


It seems like a Ubuntu brightness controler's bug.

You can use alternative Brightness Controller or xrandr in command line.

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