I have a Dell E6430 laptop and I run Gentoo. The keyboard backlight works great... but it fades out after so many seconds. Then turns on again when I press a key. Is there any way or any manipulation I can set in /sys to make the keyboard back light always stay on and not fade out after so many seconds of not pressing a key? 
Dell E6430 - keep keyboard back light on and not fade out?
linux;keyboard;gentoo;hardware;backlight