Comment 0 for bug 1662316

There are problems with Asus GL553VE laptop Fn buttons and keyboard backlight
1) Keyboard backlight uncontrollable
2) Most FN keys don't work

There is no way to control keyboard backlight at all (already tried all possible ways found in internet)

Missing /sys/class/leds/asus::kbd_backlight (asus-nb-wmi modprobed)

try all possible variants with acpi_osi and acpi_backlight from forum - no effect.

Install kernel 4.9 and even 4.10 latest RC - no effect (only got control over airplane led).

Keyboard backlight is always on or always off (last state from windows)
Fn keys not working:
F1(Zz Suspend) F2(Airplane) F3(Kb brightness down) F4(Kb brightness up) F5(Brightness up) F6(Brightness down) F7(Screen dim) F9(Touchpad disable)
Workjng: Sound Mute + - (F10 F11 F12)

Monitor backlight working fine by using menu slider.

Tested on open and proprietary drivers from latest ppas

lsb_release -rd
Description: Ubuntu 16.04.1 LTS
Release: 16.04

Suggestion: asus-nb-wmi kernel module unable to detect hardware

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-62-generic 4.4.0-62.83
ProcVersionSignature: Ubuntu 4.4.0-62.83-generic 4.4.40
Uname: Linux 4.4.0-62-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: cabalbl4 1713 F.... pulseaudio
CurrentDesktop: KDE
Date: Mon Feb 6 23:18:11 2017
HibernationDevice: RESUME=UUID=6ab6365a-c88a-4e64-a529-83b6a9a70e4e
InstallationDate: Installed on 2017-02-05 (1 days ago)
InstallationMedia: Kubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 003: ID 8087:0a2a Intel Corp.
 Bus 001 Device 002: ID 0bda:57f5 Realtek Semiconductor Corp.
 Bus 001 Device 004: ID 0b05:1854 ASUSTek Computer, Inc.
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: ASUSTeK COMPUTER INC. GL553VE
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-62-generic.efi.signed root=UUID=18b6e8b1-63c2-4fb9-bdbb-5f9ffcc2d4cf ro quiet splash acpi_osi=Linux vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-62-generic N/A
 linux-backports-modules-4.4.0-62-generic N/A
 linux-firmware 1.157.6
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/08/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: GL553VE.208
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: GL553VE
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrGL553VE.208:bd11/08/2016:svnASUSTeKCOMPUTERINC.:pnGL553VE:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnGL553VE:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: GL553VE
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.