You have been subscribed to a public bug: Pressing Fn+F3 or Fn+F4 keys (which are the combinations to increase or decrease keyboard backlight brightness, respectively) doesn't do anything, the keyboard backlight stays off. Other key combinations, like adjusting display brightness or audio volume, do work.
Keyboard backlight control worked in Kubuntu 18.04 on the same machine. ProblemType: Bug DistroRelease: Ubuntu 18.10 Package: linux-image-4.18.0-10-generic 4.18.0-10.11 ProcVersionSignature: Ubuntu 4.18.0-10.11-generic 4.18.12 Uname: Linux 4.18.0-10-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.20.10-0ubuntu13 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: lastique 2820 F.... pulseaudio /dev/snd/controlC1: lastique 2820 F.... pulseaudio CurrentDesktop: KDE Date: Fri Oct 26 17:40:24 2018 InstallationDate: Installed on 2013-10-11 (1840 days ago) InstallationMedia: Kubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) MachineType: ASUSTeK COMPUTER INC. N550JV ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-10-generic root=UUID=bafa6509-dea3-48a1-a308-129b1514ab28 ro quiet splash nmi_watchdog=0 RelatedPackageVersions: linux-restricted-modules-4.18.0-10-generic N/A linux-backports-modules-4.18.0-10-generic N/A linux-firmware 1.175 SourcePackage: linux UpgradeStatus: Upgraded to cosmic on 2018-10-20 (6 days ago) WifiSyslog: dmi.bios.date: 11/19/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: N550JV.208 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: N550JV 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.:bvrN550JV.208:bd11/19/2013:svnASUSTeKCOMPUTERINC.:pnN550JV:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnN550JV:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.family: N dmi.product.name: N550JV dmi.product.sku: ASUS-NotebookSKU dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. ** Affects: upower (Ubuntu) Importance: Medium Status: Confirmed ** Tags: amd64 apport-bug cosmic kernel-bug-exists-upstream kernel-fixed-upstream -- Keyboard backlight control doesn't work on Asus N550JV https://bugs.launchpad.net/bugs/1800164 You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to upower in Ubuntu. -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp