kernel-packages team mailing list archive

[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

Did this issue start happening after an update/upgrade?  Was there a
prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.4 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as
"Confirmed".


Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4-rc5-wily

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1527740

Title:
  Touchpad intermittently stops working

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Touchpad intermittently stops working on lenovo carbon x1 (gen1)

  If I close the lid, or sometimes disable and then re-enable touchpad
  in BIOS, it may sometimes come back.  Sometimes running the software
  updater seems to fix or break it, but this may be incidental

  also perhaps incidental, im using virtualbox alot, and thats really
  the only thing new in my workflow.

  when it doesn't work, xinput list sometimes does not show the device.
  Once it shows, i can see properties in system settings -> mouse and
  touchpad', but that doesn't necessarily mean the touchpad is going to
  come alive.

  If it does start to work, it often works across several reboots.

  i've attached some additional files in a tarball:
      -- beforeaAndAfterLidClose -- this was a run of cat /proc/bus/input/devices before and after closing lid ... note that after closing and reopening, the TouchPad shows up.
      -- dmesg
      -- devices: a full '/cat/proc/bus/devices', obtained after the touchpad reappeared, which will show the vendor information
      -- Xorg.0.log

  define@x1:~/Desktop/touchPad$ lsb_release -rd
  Description:	Ubuntu 14.04.3 LTS
  Release:	14.04

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-74-generic 3.13.0-74.118
  ProcVersionSignature: Ubuntu 3.13.0-74.118-generic 3.13.11-ckt30
  Uname: Linux 3.13.0-74-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  define     2741 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Fri Dec 18 14:32:53 2015
  HibernationDevice: RESUME=UUID=298e288a-808a-477a-b4b6-3905d0819c47
  InstallationDate: Installed on 2014-10-12 (432 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: LENOVO 34606V9
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-74-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-74-generic N/A
   linux-backports-modules-3.13.0-74-generic  N/A
   linux-firmware                             1.127.19
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/29/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: G6ET96WW (2.56 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 34606V9
  dmi.board.vendor: LENOVO
  dmi.board.version: 0B98401 Pro
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrG6ET96WW(2.56):bd04/29/2013:svnLENOVO:pn34606V9:pvrThinkPadX1Carbon:rvnLENOVO:rn34606V9:rvr0B98401Pro:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 34606V9
  dmi.product.version: ThinkPad X1 Carbon
  dmi.sys.vendor: LENOVO

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