I have an Asus N56JK computer and I have tried many different options such as updating the
Grub file in
/etc/default/grub but to no avail. All other Function keys seems to be working but only function keys used to adjust brightness are not working?
I have a Asus X551MA, here is what worked for me.
gksudo gedit /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pcie_aspm=force acpi_osi="
Restartyour computer; (Don't forget to bookmark this page)
sudo shutdown -r now
This should fix your issue, if not keep reading.
Create 20-intel.conf; Intel GFX card only!
sudo touch 20-intel.conf
gksudo gedit 20-intel.conf
Pastethe following lines into the document;
Section "Device" Identifier "card0" Driver "intel" Option "Backlight" "intel_backlight" BusID "PCI:0:2:0" EndSection
sudo shutdown -r now
This should work, if not keep reading.
Install 3.16 kernel for 14.04 LTS;
sudo apt-get update
sudo apt-get install linux-image-generic-lts-utopic
That's all I got, sorry if this is incompatible with your set-up as there may be additional steps required, and I prefer to refrain from giving blind advice. I do recommend upgrading the kernel however, as this may be the solution you need, if you are using Ubuntu 14.10 or later there is no need to upgrade the kernel.
I have an ASUS UX305FA zenbook and the above suggestions re: messing around with /etc/default/grub ddidn't work for me.
This worked for me: https://github.com/thezerobit/asus-zenbook-ux305fa
sudo apt-get install xbacklight
In Keyboard settings, set up custom shortcuts to increase or decrease backlight by calling
xbacklight -inc 10 or
xbacklight -dec 10.
Edit: I own this laptop too and the xbacklight workaround does work. you should just not use the fn + f5/f6 buttons but use other keys, mine are ctrl + f3/f4. Also if i decrease too much, the screen will go entirely black..
protected by Community♦ Jan 17 '17 at 2:40
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