Hello everyone,
I own an Asus G51J Laptop and I had the exactly same problem as you. I solved it since a few hours and I wanted to share the solution.
I have managed to reassociate the original keys to higher/lower the keyboard brightness (Fn+F3 to lower it & Fn+F4 to higher it).
- Download the joined archive and uncompress it
- Move both the "acpi/events/keyboard_brightness*" files into the /etc/acpi/events/ directory.
Code:
sudo mv acpi/events/keyboard_brightnessup /etc/acpi/events/
Code:
sudo mv acpi/events/keyboard_brightnessdown /etc/acpi/events/
- Move both the "acpi/key_brightness*.sh" files into the /etc/acpi/ directory.
Code:
sudo mv acpi/key_brightnessup.sh /etc/acpi/
Code:
sudo mv acpi/key_brightnessdown.sh /etc/acpi/
- Apply chmod 755 to both the /etc/acpi/key_brightness*.sh
Code:
sudo chmod 755 /etc/acpi/key_brightnessup.sh
Code:
sudo chmod 755 /etc/acpi/key_brightnessdown.sh
- Reload the acpid module
Job done!
You have now recovered the usual behavior of the Fn+F3 & Fn+F4 buttons!
If you wish to understand acpi interruptions, I followed the
LaptopSpecialKeys from the Ubuntu Documentation.
If you wish to go even further and manage keyboard backlighting depending on the power state, I recommend you to read
that article, made for power savings with Ubuntu on a Mac Pro (pay attention to the 99-savings script).
Some customization is mandatory, but you'll be able to automatically activate/deactivate keyboard illumination when on battery or not, from the even start of Ubuntu.
Have fun!
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