Also, I noticed this is a function of the Gnome Power Manager - Power Manager Brightness Applet 2.24.0 so I changed the package from acpi to gpm, as the regular Fn keys method does work.
Also, I noticed this is a function of the Gnome Power Manager - Power Manager Brightness Applet 2.24.0 so I changed the package from acpi to gpm, as the regular Fn keys method does work.