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[Kludge <1386077@xxxxxxxxxxxxxxxxxx>]

Removing the blacklist of i2c_hid worked for me too.

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https://bugs.launchpad.net/bugs/1386077

Title:
  [Dell XPS 13 9333] Touchpad not detected on Ubuntu 14.10

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  The touchpad was working properly on Ubuntu 14.04 but it's not
  recognized as a device after upgrade to 14.10.

  cat /proc/bus/input/devices:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1386077/+attachment/4246505/+files/log.txt

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: linux-image-3.16.0-23-generic 3.16.0-23.31
  ProcVersionSignature: Ubuntu 3.16.0-23.31-generic 3.16.4
  Uname: Linux 3.16.0-23-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  alberto    2756 F.... pulseaudio
   /dev/snd/controlC0:  alberto    2756 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Mon Oct 27 09:25:22 2014
  HibernationDevice: RESUME=UUID=c74a6005-0636-4344-b099-c1af92d5acf9
  InstallationDate: Installed on 2014-06-07 (141 days ago)
  InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 20130822-08:48
  MachineType: Dell Inc. XPS13 9333
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-23-generic root=UUID=b2a23f0f-7d0a-4045-9654-0fe0455f93ec ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-23-generic N/A
   linux-backports-modules-3.16.0-23-generic  N/A
   linux-firmware                             1.138
  SourcePackage: linux
  UpgradeStatus: Upgraded to utopic on 2014-10-26 (0 days ago)
  dmi.bios.date: 03/19/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A04
  dmi.board.name: 0D13CM
  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.:bvrA04:bd03/19/2014:svnDellInc.:pnXPS139333:pvr:rvnDellInc.:rn0D13CM:rvrA00:cvnDellInc.:ct8:cvr0.1:
  dmi.product.name: XPS13 9333
  dmi.sys.vendor: Dell Inc.

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