Fixed in mainline 4.19 rc4
** Tags added: kernel-fixed-upstream
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1791372
Title:
Keyboard backlight not working on Asus ZenBook Flip UX561UD laptop in
Cosmic 18.10, works with 18.04.1 desktop installer live image
Status in acpid package in Ubuntu:
New
Status in linux package in Ubuntu:
Confirmed
Bug description:
Repro:
1. Press Fn+F3/F4 in fresh install from current Cosmic desktop image, fully
updated
-> Keyboard backlight should come on or change but doesn't. The
gnome-shell pop-up icon for the keyboard backlight appears for both
keys, but the icon's "progress" bar is not visible.
Kernel version is linux-image-4.17.0-9-generic
This is the same in X and Wayland session. In case it matters, Nvidia
binary drivers are installed but Nvidia is switched off via Prime
setting in nvidia-settings. Running with Intel drivers
The keyboard backlight works perfectly when booting from the 18.04.1
desktop live image. When turning on light with 18.04.1, it is off
again after rebooting into 18.10. (However 18.04.1 seems to freeze
when shutting down from menu, I have to hard-shut it off).
Most other important Fn+Fx special keys on this laptop work (display
brightness, touchpad off, sound) except for the airplane mode key. However the
airplane mode key only fails in gnome-shell but works on the console (this is
filed as https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1791367)
(Not working are a key that seems to mean "display off" and another of
unclear purpose that never worked on any laptop I ever saw, maybe "presentation
mode" as it seems to depict a flip chart or projection screen).
ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: linux-image-4.17.0-9-generic 4.17.0-9.10
ProcVersionSignature: Ubuntu 4.17.0-9.10-generic 4.17.17
Uname: Linux 4.17.0-9-generic x86_64
ApportVersion: 2.20.10-0ubuntu9
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: angela 16196 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Fri Sep 7 22:08:12 2018
InstallationDate: Installed on 2018-09-05 (1 days ago)
InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Alpha amd64 (20180822)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 8087:0a2b Intel Corp.
Bus 001 Device 003: ID 13d3:5256 IMC Networks
Bus 001 Device 002: ID 8644:800b Intenso GmbG Micro Line (4GB)
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: ASUSTeK COMPUTER INC. UX561UD
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.17.0-9-generic
root=UUID=02bad6b5-ca8f-4184-b477-935995e14bdc ro quiet splash vt.handoff=1
RelatedPackageVersions:
linux-restricted-modules-4.17.0-9-generic N/A
linux-backports-modules-4.17.0-9-generic N/A
linux-firmware 1.174
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/06/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: UX561UD.304
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UX561UD
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 31
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrUX561UD.304:bd03/06/2018:svnASUSTeKCOMPUTERINC.:pnUX561UD:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX561UD:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct31:cvr1.0:
dmi.product.family: ZenBook Flip
dmi.product.name: UX561UD
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
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