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UBUNTU disable auto brighness

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linux-howto

http://ubuntuforums.org – im using latest version of ubuntu and using KDE, after changing brighness in `Screen Brighness` from kde battery settings after 10~15 second automatically change that without any delay. detail: Samsung Laptop 300e5x a0j shell command: Code:     xrandr --output LVDS --set BACKLIGHT 102 --set BACKLIGHT_CONTROL legacy --output VGA --auto result: Code:     tux-world@tux-world ~ $ xrandr --output LVDS --set BACKLIGHT 102 --set BACKLIGHT_CONTROL legacy --output VGA --auto     warning: output LVDS not found; ignoring     warning: output V (Hardware)