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[Wouter van der Graaf <1219753@xxxxxxxxxxxxxxxxxx>]

** Tags added: regression-potential

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https://bugs.launchpad.net/bugs/1219753

Title:
  Dell XPS 12 2013 Haswell synaptics trackpad not recognized anymore in
  Ubuntu kernel 3.10 and 3.11

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  First I installed stock Ubuntu 13.04 Raring Ringtail with kernel 3.8.
  Trackpad was functioning correctly (e.g. two-finger scrolling worked)
  and was recognized as Synaptics device in /proc/bus/input/devices.

  Due to very new Intel wireless 7260 hardware that did not work in
  kernel 3.8, I dist-upgraded to 13.10 Saucy Salamander with kernel
  3.11. With this kernel my Synaptics trackpad is no longer recognized
  as Synaptics and works as default evdev pointer (mouse) device,
  without all the trackpad features.

  This bug report was done with kernel 3.11rc7, but applies also to
  kernel 3.10 and the latest saucy kernel 3.11 to which I'm upgraded by
  software updater.

  Instead of Synaptics, devices lists it as below:

  I: Bus=0018 Vendor=06cb Product=2734 Version=0100
  N: Name="DLL05E3:01 06CB:2734"
  P: Phys=
  S: Sysfs=/devices/pci0000:00/INT33C3:00/i2c-8/8-002c/input/input11
  U: Uniq=
  H: Handlers=mouse0 event11
  B: PROP=0
  B: EV=17
  B: KEY=30000 0 0 0 0
  B: REL=3
  B: MSC=10

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: xserver-xorg-input-synaptics 1.7.1-0ubuntu1
  Uname: Linux 3.11.0-031100rc7-generic x86_64
  ApportVersion: 2.12.1-0ubuntu3
  Architecture: amd64
  Date: Mon Sep  2 11:52:16 2013
  DistUpgraded: 2013-09-01 22:21:35,082 DEBUG enabling apt cron job
  DistroCodename: saucy
  DistroVariant: ubuntu
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2013-08-09 (23 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MachineType: Dell Inc. XPS 12-9Q33
  MarkForUpload: True
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-031100rc7-generic root=UUID=8e4879ce-4777-4c48-b6d7-5b3b4b116ad3 ro quiet splash vt.handoff=7
  SourcePackage: xserver-xorg-input-synaptics
  UpgradeStatus: Upgraded to saucy on 2013-09-01 (0 days ago)
  dmi.bios.date: 06/20/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A01
  dmi.board.name: XPS 12-9Q33
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A01
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: Not Specified
  dmi.modalias: dmi:bvnDellInc.:bvrA01:bd06/20/2013:svnDellInc.:pnXPS12-9Q33:pvrA01:rvnDellInc.:rnXPS12-9Q33:rvrA01:cvnDellInc.:ct8:cvrNotSpecified:
  dmi.product.name: XPS 12-9Q33
  dmi.product.version: A01
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:0.9.10+13.10.20130828.2-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.46-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 9.2-1ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 9.2-1ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.14.2.901-2ubuntu4
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu3
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.14-4ubuntu3
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.9-2ubuntu1
  xserver.bootTime: Mon Sep  2 11:22:49 2013
  xserver.errors:

  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                1021
   vendor                                     LGD
  xserver.version: 2:1.14.2.901-2ubuntu4

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