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[Baif <baifcc@xxxxxxxxxxx>]

Same situation confirmed as following:

Apple Trackpad indeed crashes kernel 3.12.0-031200-generic on SAUCY.
But 3.11.0-12/3.11.0-14 seem to be good.

I have tried TRUSTY alpha1, either 3.12.0-6/3.12.0-7, both of them
crashes with trackpad.

AND, I also test Apple MagicMouse, none of mentioned kernel crashes with
it.......

The following threads have resolution for SAUCY with 3.11 kernels, BUT
no for SAUTY with 3.12 nor TRUSTY with 3.12 (Haven't tried 3.13-rcx)

FYI:
Apple Wireless Trackpad causes kernel oops
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1218004
kernel oops in free_task
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1214931;

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https://bugs.launchpad.net/bugs/1248287

Title:
  Apple Wireless Trackpad "magicmouse" crashes kernel on multitouch

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  This happens the same on my Thinkpad X301 (2777CTO) and my home
  desktop frankenstein machine.

  Pair new Bluetooth APPL "Wireless Trackpad". Single finger clicks and
  drags do not seem to cause a problem.  More than one finger gestures
  crashes either as:  Hard hang with flashing keyboard light and no
  SysRq, Immediate reboot, or Delayed hang and X return to text  console
  and freeze with no SysRq and no blinking.

  It's hard to get a syslog.  The only syslog messages I get appears to
  be a result of the hang but not near the cause.  Attached as "syslog-
  hang-on-frankenstein.txt".

  Attached video recordings of hangs and photos of oopsen.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: linux-image (not installed)
  ProcVersionSignature: Ubuntu 3.11.0-9.16-generic 3.11.2
  Uname: Linux 3.11.0-9-generic i686
  ApportVersion: 2.12.5-0ubuntu2.1
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  cmiller    2343 F.... pulseaudio
  Date: Tue Nov  5 13:41:30 2013
  HibernationDevice: RESUME=UUID=c4293092-7dbc-45d8-a4cd-43b828063734
  MachineType: LENOVO 2777CTO
  MarkForUpload: True
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: root=UUID=24becfaf-5998-47e3-b62d-18c5e13146b2 ro quiet splash
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-9-generic N/A
   linux-backports-modules-3.11.0-9-generic  N/A
   linux-firmware                            1.116
  SourcePackage: linux
  UpgradeStatus: Upgraded to saucy on 2009-03-27 (1684 days ago)
  WpaSupplicantLog:
   
  dmi.bios.date: 10/09/2008
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 6EET21WW (1.02 )
  dmi.board.name: 2777CTO
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr6EET21WW(1.02):bd10/09/2008:svnLENOVO:pn2777CTO:pvrThinkPadX301:rvnLENOVO:rn2777CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 2777CTO
  dmi.product.version: ThinkPad X301
  dmi.sys.vendor: LENOVO

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