Not sure why "acpi_osi=" is uses in your kernel parameter, but please remove it and see if it starts working.
-- 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/1806343 Title: FN+F3/F4 does not modify keyboard backlight brightness. Status in linux package in Ubuntu: Confirmed Bug description: acpi_listen does not output anything to terminal when pressing key combination. Keyboard backlight has worked on older versions (I believe 18.04 or earlier.) I can manually toggle with: echo 0 | sudo tee --append /sys/class/leds/asus\:\:kbd_backlight_1/brightness echo 1 | sudo tee --append /sys/class/leds/asus\:\:kbd_backlight_1/brightness echo 2 | sudo tee --append /sys/class/leds/asus\:\:kbd_backlight_1/brightness echo 3 | sudo tee --append /sys/class/leds/asus\:\:kbd_backlight_1/brightness for varying degrees of brightness. --- ProblemType: Bug ApportVersion: 2.20.10-0ubuntu14 Architecture: amd64 CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 19.04 InstallationDate: Installed on 2018-11-28 (4 days ago) InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Alpha amd64 (20181128) NonfreeKernelModules: nvidia_modeset nvidia Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash Tags: disco Uname: Linux 4.19.6-041906-generic x86_64 UnreportableReason: The running kernel is not an Ubuntu kernel UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom debian-tor dip lpadmin plugdev sambashare sudo _MarkForUpload: True --- ProblemType: Bug ApportVersion: 2.20.10-0ubuntu14 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: duck 3632 F.... pulseaudio CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 19.04 InstallationDate: Installed on 2018-11-28 (22 days ago) InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Alpha amd64 (20181128) MachineType: ASUSTeK COMPUTER INC. GL502VMK NonfreeKernelModules: nvidia_drm nvidia_modeset nvidia Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.18.0-11-generic root=/dev/mapper/vg0-root ro quiet splash acpi_osi= acpi_backlight=native vt.handoff=1 ProcVersionSignature: Ubuntu 4.18.0-11.12-generic 4.18.12 RelatedPackageVersions: linux-restricted-modules-4.18.0-11-generic N/A linux-backports-modules-4.18.0-11-generic N/A linux-firmware 1.176 Tags: disco Uname: Linux 4.18.0-11-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom debian-tor dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 07/03/2017 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: GL502VMK.305 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: GL502VMK 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.:bvrGL502VMK.305:bd07/03/2017:svnASUSTeKCOMPUTERINC.:pnGL502VMK:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnGL502VMK:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.family: GL dmi.product.name: GL502VMK 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/1806343/+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
