kernel-packages team mailing list archive

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

Matteo Dell'Amico, the next step is to fully reverse commit bisect from
kernel 4.2 to 4.3 in order to identify the last bad commit, followed
immediately by the first good one. Once this commit has been identified,
then it may be reviewed as a candidate for backporting into your
release. Could you please do this following
https://wiki.ubuntu.com/Kernel/KernelBisection#How_do_I_reverse_bisect_the_upstream_kernel.3F
?

Please note, finding adjacent kernel versions is not fully commit
bisecting.

Thank you for your understanding.

Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs

** Tags added: bios-outdated-1.71

** Tags added: regression-release vivid

** Tags added: needs-reverse-bisect

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

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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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