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["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

** Tags added: regression-release

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

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https://bugs.launchpad.net/bugs/1540511

Title:
  Touchpad not working (4.3 -> 4.4 regression)

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  When booting the latest xenial kernel (4.4.0-2.16), my touchpad is not
  working. When booting 4.3 kernels, the touchpad is works.

  Expected: When I move a finger touching the touchpad, an arrow should move accordingly on the screen.
  What happens instead: nothing.

  I've tried an upstream 4.4 kernel; problem is present there as well.

  I've booted with pci=noaer due to another bug that would otherwise
  spam dmesg. Removing it does not fix the problem.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-2-generic 4.4.0-2.16
  ProcVersionSignature: Ubuntu 4.4.0-2.16-generic 4.4.0
  Uname: Linux 4.4.0-2-generic x86_64
  ApportVersion: 2.19.4-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  david      1759 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Mon Feb  1 18:49:25 2016
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=fe528b90-b4eb-4a20-82bd-6a03b79cfb14
  InstallationDate: Installed on 2015-11-28 (65 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20151127)
  MachineType: Dell Inc. Inspiron 13-7359
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-2-generic.efi.signed root=UUID=94d54f88-5d18-4e2b-960a-8717d6e618bb ro noprompt persistent pci=noaer quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-2-generic N/A
   linux-backports-modules-4.4.0-2-generic  N/A
   linux-firmware                           1.155
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/08/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 01.02.00
  dmi.board.name: 0NT3WX
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvr01.02.00:bd09/08/2015:svnDellInc.:pnInspiron13-7359:pvr:rvnDellInc.:rn0NT3WX:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: Inspiron 13-7359
  dmi.sys.vendor: Dell Inc.

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