https://bugzilla.kernel.org/show_bug.cgi?id=197889

            Bug ID: 197889
           Summary: ASUS FX553VD ACPI errors and maybe related LED
                    keyboard backlight issue
           Product: ACPI
           Version: 2.5
    Kernel Version: 4.14.0-041400-generic x86_64
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: ACPICA-Core
          Assignee: acpi_acpica-c...@kernel-bugs.osdl.org
          Reporter: ramazanero...@gmail.com
        Regression: No

Created attachment 260685
  --> https://bugzilla.kernel.org/attachment.cgi?id=260685&action=edit
Bios file - V303 - Latest

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

I can't control keyboard LED backlight level with it's dedicated FN keys or
anything else. FN keys are recognized by Linux Mint 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.

I'm adding bios to attachment , just in case.

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