[Bug 1876429] Re: Dell Latitude E6400 keyboard backlight doesn't work at Ubuntu 20.04

[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

** Changed in: linux (Ubuntu)
Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1876429

Title:
Dell Latitude E6400 keyboard backlight doesn't work at Ubuntu 20.04

Status in linux package in Ubuntu:
Expired

Bug description:
Hello,

after a fresh installation of Ubuntu 20.04, the keyboard backlight on
the Dell Latitude E6400 laptop does not work.

Thanks
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: miska 1597 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-05-01 (3 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: Dell Inc. Latitude E6400
Package: linux (not installed)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=cs_CZ.UTF-8
SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-29-generic root=UUID=1000bee7-e890-4117-b6f7-6a6803966781 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 5.4.0-29.33-generic 5.4.30
RelatedPackageVersions:
linux-restricted-modules-5.4.0-29-generic N/A
linux-backports-modules-5.4.0-29-generic N/A
linux-firmware 1.187
Tags: focal
Uname: Linux 5.4.0-29-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 06/04/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A34
dmi.board.name: 0U692R
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA34:bd06/04/2013:svnDellInc.:pnLatitudeE6400:pvr:rvnDellInc.:rn0U692R:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Latitude E6400
dmi.sys.vendor: Dell Inc.

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