That would have been between 2012 and 2014, during which time Ubuntu did
not use libinput at all. We only started using libinput in Ubuntu in
2017.

You can go back to the old touchpad driver (it was sold with) if you're
willing to use Xorg sessions only. Just install:

  sudo apt install xserver-xorg-input-synaptics

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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/1746740

Title:
  XPS13 L322X Bionic (daily dev) touchpad laggy

Status in libinput:
  Fix Released
Status in libinput package in Ubuntu:
  Incomplete
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Also, all function keys work as expected, even F6 (keyboard 3-states
  backlight), but OSD picture for this last feature randomly auto-
  triggers.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: linux-image-4.13.0-25-generic 4.13.0-25.29
  ProcVersionSignature: Ubuntu 4.13.0-25.29-generic 4.13.13
  Uname: Linux 4.13.0-25-generic x86_64
  ApportVersion: 2.20.8-0ubuntu7
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ubuntu     1876 F.... pulseaudio
  CasperVersion: 1.388
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Feb  1 14:05:22 2018
  LiveMediaBuild: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180201)
  MachineType: Dell Inc. XPS L322X
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: file=/cdrom/preseed/username.seed boot=casper 
initrd=/casper/initrd.lz quiet splash --- debian-installer/language=fr 
keyboard-configuration/layoutcode?=fr keyboard-configuration/variantcode?=oss
  RelatedPackageVersions:
   linux-restricted-modules-4.13.0-25-generic N/A
   linux-backports-modules-4.13.0-25-generic  N/A
   linux-firmware                             1.170
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/28/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A10
  dmi.board.name: 0PJHXN
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: 0.1
  dmi.modalias: 
dmi:bvnDellInc.:bvrA10:bd08/28/2013:svnDellInc.:pnXPSL322X:pvr:rvnDellInc.:rn0PJHXN:rvrA00:cvnDellInc.:ct8:cvr0.1:
  dmi.product.family: ChiefRiver System
  dmi.product.name: XPS L322X
  dmi.sys.vendor: Dell Inc.

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