Saïvann Carignan : right-click on gnome-power-manager icon in taskbar, select Preferences. Go on the "On Sector" tab, normally there is a slider widget to control the screen brightness. Then, freeze the keyboard with the fn keys and it should come back to live after playing with the aforementioned slider.
Saïvann Carignan : right-click on gnome-power-manager icon in taskbar, select Preferences. Go on the "On Sector" tab, normally there is a slider widget to control the screen brightness. Then, freeze the keyboard with the fn keys and it should come back to live after playing with the aforementioned slider.