[Bug 1829095] [NEW] Keyborad backligt does not work

[Chris Martin]

Public bug reported:

I have a dell XPS14 (L421X).  In releases 18.04 and lower the keyboard
back light used to work.  However in 18.10 and 19.04 it does not

The dell_laptop model is loaded.

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: ubuntu-desktop 1.431
ProcVersionSignature: Ubuntu 5.0.0-15.16-generic 5.0.6
Uname: Linux 5.0.0-15-generic x86_64
NonfreeKernelModules: nvidia wl
ApportVersion: 2.20.10-0ubuntu27
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Wed May 15 11:44:51 2019
InstallationDate: Installed on 2019-04-23 (21 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
SourcePackage: ubuntu-meta
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: ubuntu-meta (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug disco

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https://bugs.launchpad.net/bugs/1829095

Title:
  Keyborad backligt does not work

Status in ubuntu-meta package in Ubuntu:
  New

Bug description:
  I have a dell XPS14 (L421X).  In releases 18.04 and lower the keyboard
  back light used to work.  However in 18.10 and 19.04 it does not

  The dell_laptop model is loaded.

  ProblemType: Bug
  DistroRelease: Ubuntu 19.04
  Package: ubuntu-desktop 1.431
  ProcVersionSignature: Ubuntu 5.0.0-15.16-generic 5.0.6
  Uname: Linux 5.0.0-15-generic x86_64
  NonfreeKernelModules: nvidia wl
  ApportVersion: 2.20.10-0ubuntu27
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Wed May 15 11:44:51 2019
  InstallationDate: Installed on 2019-04-23 (21 days ago)
  InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
  SourcePackage: ubuntu-meta
  UpgradeStatus: No upgrade log present (probably fresh install)

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