Public bug reported:

Hi , i'm using this laptop with it's latest bios (V303 -
https://www.asus.com/Laptops/ASUS-FX553VD/HelpDesk_BIOS/ )

Kernel : 4.14.0-041400-generic x86_64

I can't control keyboard LED backlight level with it's dedicated FN keys
or anything else. FN keys are recognized by Linux Mint 18.2 and Ubuntu
16.04 but pressing them have no effect.

Kernels from 4.10 to 4.14 are the same on that regard.

And also i have these errors on "inxi -F && dmesg | grep -i error"

[    0.031175] ACPI Error: [PRT0] Namespace lookup failure, AE_ALREADY_EXISTS 
(20170728/dswload-378)
[    0.040665] ACPI Error: 1 table load failures, 10 successful 
(20170728/tbxfload-246)
[    0.506425] acpi PNP0A08:00: _OSC failed (AE_ERROR); disabling ASPM
[    1.694527] RAS: Correctable Errors collector initialized.
[    9.833145] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro

I'm not a developer but only a user. So if i opened that issue to the
wrong place can you point me the correct place to open it?

Thanks.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete


** Tags: bionic

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https://bugs.launchpad.net/bugs/1732686

Title:
  Asus Fx553VD - Keyboard LED backlight controls are not working

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