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The FN+F3 and FN+F4 key combinations are not able to control the keyboard backlight on my Asus G55VW.

I could live with a command line solution so I tried the solution proposed here: http://askubuntu.com/a/157986/71053

Unfortunately, there is no /sys/class/leds/asus::kbd_backlight device but I instead found one named /sys/class/leds/ath9k-phy0. I have tried echoing values to it: no error occurs, the value is changed, but the keyboard remains dark.

Any suggestion welcome.

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This is now working OOTB with Ubuntu 14.04. –  David Dossot Nov 9 '14 at 17:14

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