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[SOLVED] Gnome brightness problem.
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caaarlos
Tux's lil' helper
Tux's lil' helper


Joined: 27 Apr 2012
Posts: 113

PostPosted: Thu Jan 17, 2013 12:15 pm    Post subject: [SOLVED] Gnome brightness problem. Reply with quote

Hello,

I can't change my screen brightness. I'm using gnome 2, if I click on brightness applet on my gnome-panel, it's show me an error:

"https://www.dropbox.com/s/9f7ak765s16c5zx/Captura_de_tela.png"

The translation of my error is, "Cannot get laptop panel brightness"

I can't use the command "xbacklight" if I try it show me:

Code:

    # xbacklight
              No outputs have backlight property
   


and my backlight's directory is empty
Code:

       # ls -a /sys/class/backlight/
            .  ..


So how cai I fix it?

Thanks.


Last edited by caaarlos on Wed Jan 30, 2013 11:56 pm; edited 1 time in total
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caaarlos
Tux's lil' helper
Tux's lil' helper


Joined: 27 Apr 2012
Posts: 113

PostPosted: Sat Jan 26, 2013 1:51 pm    Post subject: Reply with quote

I used "radeontool light on" and reboot my system, now my video brightness is better, but the gnome brightness yet not work. But now without the error...
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chithanh
Developer
Developer


Joined: 05 Aug 2006
Posts: 1667
Location: Berlin, Germany

PostPosted: Sat Jan 26, 2013 5:44 pm    Post subject: Reply with quote

Do you have ACPI_VIDEO enabled in your kernel? (and loaded if built as module)
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caaarlos
Tux's lil' helper
Tux's lil' helper


Joined: 27 Apr 2012
Posts: 113

PostPosted: Wed Jan 30, 2013 11:56 pm    Post subject: Reply with quote

Thank for the tip!

I followed this tutorial <http://www.gentoo.org/doc/en/power-management-guide.xml>
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