Looks like this feature has been added to linux kernel after v4.19. Do you know how many levels of backlit the keyboard has?
** Changed in: linux (Ubuntu) Importance: Undecided => Low -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1814325 Title: Keyboard light fn does not works for Asus VivoBook S14 X430UA on Ubuntu 18.04 Status in linux package in Ubuntu: Confirmed Bug description: I started using Ubuntu in my new Asus VivoBook S14 X430UA laptop. But it is very disappointing that the keyboard light cannot be controlled using the dedicated switch (fn + f7). Similarly fn + f8 also not working, which is for screen toggling. echo 3 | sudo tee /sys/class/leds/asus::kbd_backlight/brightness command to switch on the keyboard light is working fine. Is there any solution for this issue? Description: Ubuntu 18.04.1 LTS Release: 18.04 ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-45-generic 4.15.0-45.48 ProcVersionSignature: Ubuntu 4.15.0-45.48-generic 4.15.18 Uname: Linux 4.15.0-45-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ajithabhks 1491 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Sat Feb 2 01:25:22 2019 HibernationDevice: RESUME=UUID=29048cc5-d306-4844-8f70-c87fc7a20081 InstallationDate: Installed on 2019-01-31 (0 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 8087:0a2b Intel Corp. Bus 001 Device 002: ID 13d3:56c1 IMC Networks Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: ASUSTeK COMPUTER INC. VivoBook S14 X430UA ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-45-generic root=UUID=911bc958-ea13-4f07-9757-ce3a56799271 ro quiet splash acpi_osi=Linux acpi_backlight=vendor vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-4.15.0-45-generic N/A linux-backports-modules-4.15.0-45-generic N/A linux-firmware 1.173.3 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/06/2018 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: X430UA.204 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: X430UA 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.:bvrX430UA.204:bd06/06/2018:svnASUSTeKCOMPUTERINC.:pnVivoBookS14X430UA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX430UA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.family: VivoBook S dmi.product.name: VivoBook S14 X430UA dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1814325/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
