kernel-packages team mailing list archive

[Niels Holmgaard <niels@xxxxxxxxxxx>]

Christopher,

Even after updating the bios to A15 (using Ubuntu kernel 3.19), the
driver still looses sync in bursts about once per 1000-2000 seconds on
my machine.

However, it seems to me that the severity is less - I have not noticed
any random clicking on things in the single work day the computer has
been running with the new bios code.

           /Niels

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1382702

Title:
  [Dell Latitude E7440] Touchpad out of sync

Status in linux package in Ubuntu:
  Triaged

Bug description:
  The touchpad repetitively gets out of sync, causing the mouse to jump
  around and randomly click things:

  [  399.788431] psmouse serio1: DualPoint TouchPad at isa0060/serio1/input0 lost sync at byte 6
  [  399.798582] psmouse serio1: DualPoint TouchPad at isa0060/serio1/input0 - driver resynced.

  WORKAROUND: Loading the psmouse driver with proto=exps largely avoids
  the problem, but has the side effect of merging the trackpad and the
  nub together as one input device (so you can't disable the trackpad
  and just use the nub).

  Setting reset after on the driver does fix the random moving and
  clicking, but causes the CPU to thrash as it constantly disconnects
  and reconnects to try to "resync."

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-37-generic 3.13.0-37.64
  ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7
  Uname: Linux 3.13.0-37-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  taylocj1   2947 F.... pulseaudio
   /dev/snd/controlC0:  taylocj1   2947 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Fri Oct 17 18:50:28 2014
  HibernationDevice: RESUME=UUID=f364f93e-bbb2-4f84-aa9c-6ae3a0f6b182
  InstallationDate: Installed on 2014-10-03 (14 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Dell Inc. Latitude E7440
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-37-generic root=UUID=d5a9e110-1f9c-446f-84b8-e57ddf7afca6 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-37-generic N/A
   linux-backports-modules-3.13.0-37-generic  N/A
   linux-firmware                             1.127.7
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 06/26/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A10
  dmi.board.name: 07F3F4
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA10:bd06/26/2014:svnDellInc.:pnLatitudeE7440:pvr01:rvnDellInc.:rn07F3F4:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude E7440
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1382702/+subscriptions