Ubuntu – Brightness hotkey doesn’t work on laptop asus k501ux [Ubuntu 16.04.1]


I have laptop asus k501ux, just installed ubuntu and it seems every key works except brightness controls, in my case it is Fn+F5 (up) and F6(down). any idea why is that happening and how to fix it?

Best Answer

  1. Go to the terminal and open grub file

sudo gedit /etc/default/grub

  1. Find


and change to this

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=native acpi_osi="

  1. Update grub

sudo update-grub

  1. Restart and it's done

That worked on Asus k501ux laptop

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