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Ubuntu 17.10 brightness problem with Asus FX553V

I just installed the new Ubuntu 17.10 on my work notebook and found out a very common problem with the ACPI. The brightness controls (F5 & F6) are not working...

The solution to the problem is:

Open the Terminal and type: sudo gedit /etc/default/grub
Append acpi_osi=Linux to the GRUB_CMDLINE_LINUX item
In the Terminal execute the following command: sudo update-grub
Reboot your notebook

That's it! 👻

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