Asus Keyboard – Keyboard Light Hotkey (Fn + F3 and F4) Rarely Works on Asus G60J

asusbacklightkeyboardshortcut-keyssuspend

Im using Ubuntu 12.04, and my laptop is an Asus G60J.

Specifications:

Ubuntu 12.04 64bit

Intel i7 720qm

Nvidia gtx 260m

4gb RAM

The laptop always start with the keyboard backlit On. The hotkeys sometimes work, sometimes don't. Generally they always work to turn on the lights, but it is very hard to turn them off. It is really annoying because when the laptop suspend the keyboard remains turned on.

I would like to know what file manage the FN events so I can try to figure it out. Any kind of help is appreciated.

Best Answer

You can manually set the brightness value (between 0 and 3) of the keyboard with the file:

/sys/class/leds/asus::kbd_backlight/brightness

The simplest is first to give you the right to modify it:

sudo chmod 777 /sys/class/leds/asus::kbd_backlight/brightness

And then change the value, for instance to turn it on:

echo 3 > /sys/class/leds/asus::kbd_backlight/brightness

Or turn it off:

echo 0 > /sys/class/leds/asus::kbd_backlight/brightness

You can set a global shortkey (eg Fn + F3 or F4) for those commands, I'm on KDE then cannot help you for this, just have a look on the settings.

(Note: Maybe the maximum value is not 3 in your case, have a look at /sys/class/leds/asus::kbd_backlight/max_brightness.)

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