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[Matteo Dell'Amico <della@xxxxxxxx>]

I remember that I didn't have this problem in 13.10 (Saucy) and I had it
in Vivid and now Wily.

What do you mean as "confirmed to root cause"? What do you expect me to
do next?

thanks!
matteo

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https://bugs.launchpad.net/bugs/1512482

Title:
  Keyboard and touchpad malfunctioning on Thinkpad Twist

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I don't know if this is really a kernel bug or if it's any other
  component, please help me know how I can diagnose the problem better.

  This is a bug I have been experiencing with both 15.04 and 15.10,
  while this was not a problem with earlier distributions --
  unfortunately, I don't remember which one in particular was actually
  working.

  I have a Thinkpad Twist -- a hybrid laptop with touchscreen. The
  touchpad almost never works (even though sometimes, erratically, it
  does). The keyboard sometimes stops working, and works again after a
  suspend/resume cycle. Sometimes it behaves as if a key is stuck.

  When running xinput --list, I don't see the touchpad. The touchscreen
  and external input devices connected via USB, however, work fine.

  I was thinking this was a hardware problem, but on the same machine
  with Windows the problem does not appear to present itself.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-17-generic 4.2.0-17.21
  ProcVersionSignature: Ubuntu 4.2.0-17.21-generic 4.2.3
  Uname: Linux 4.2.0-17-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.19.1-0ubuntu4
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  della      1684 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Mon Nov  2 21:39:42 2015
  HibernationDevice: RESUME=UUID=38d3eec5-87ea-4477-bd19-d975ac2fca22
  InstallationDate: Installed on 2013-10-05 (758 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Beta amd64 (20130925.1)
  MachineType: LENOVO 33474HU
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-17-generic root=UUID=907c2dfa-5b96-4857-a1e7-6b59406e9721 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-17-generic N/A
   linux-backports-modules-4.2.0-17-generic  N/A
   linux-firmware                            1.149.1
  SourcePackage: linux
  UpgradeStatus: Upgraded to wily on 2015-11-01 (0 days ago)
  dmi.bios.date: 12/15/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GDETA9WW (1.69 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 33474HU
  dmi.board.vendor: LENOVO
  dmi.board.version: Win8 STD DPK TPG
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrGDETA9WW(1.69):bd12/15/2014:svnLENOVO:pn33474HU:pvrThinkPadTwist:rvnLENOVO:rn33474HU:rvrWin8STDDPKTPG:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 33474HU
  dmi.product.version: ThinkPad Twist
  dmi.sys.vendor: LENOVO

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