Public bug reported:
The F5/F6 keys used to work to set the keyboard backillumination level
with 18.04 but they do not work anymore with 18.10 4.18.0-10-generic
The back illumination can be turned on with : echo 255 >
/sys/class/leds/smc\:\:kbd_backlight/brightness but not anymore with the
Fn keys.
I'm not sure if it is a kernel issue or a keyboard mapping / X issue.
Which test should I run to try to figure out where the problem is?
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: xavier 1452 F.... pulseaudio
/dev/snd/controlC1: xavier 1452 F.... pulseaudio
CurrentDesktop: KDE
Date: Fri Nov 2 19:45:26 2018
InstallationDate: Installed on 2018-10-27 (6 days ago)
InstallationMedia: Kubuntu 18.10 "Cosmic Cuttlefish" - Release amd64
(20181017.2)
MachineType: Apple Inc. MacBookAir7,2
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.18.0-10-generic
root=/dev/mapper/lvm--vg-ubuntu--root ro
cryptopts=target=CryptDisk,source=/dev/disk/by-uuid/0e4ab982-9511-479c-8a7a-4d933fcd3df1,lvm=lvm-vg
quiet splash vt.handoff=1
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: No upgrade log present (probably fresh install)
dmi.bios.date: 06/05/2018
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBA71.88Z.0178.B00.1806051659
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-937CB26E2E02BB01
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookAir7,2
dmi.chassis.asset.tag: Chassis Board Asset Tag#
dmi.chassis.type: 9
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-937CB26E2E02BB01
dmi.modalias:
dmi:bvnAppleInc.:bvrMBA71.88Z.0178.B00.1806051659:bd06/05/2018:svnAppleInc.:pnMacBookAir7,2:pvr1.0:rvnAppleInc.:rnMac-937CB26E2E02BB01:rvrMacBookAir7,2:cvnAppleInc.:ct9:cvrMac-937CB26E2E02BB01:
dmi.product.family: Mac
dmi.product.name: MacBookAir7,2
dmi.product.sku: System SKU#
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug cosmic
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https://bugs.launchpad.net/bugs/1801404
Title:
Macbook air, 18.10, fn keys to set keyboard backlight do not work
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