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[Bug 1472739] Re: Wrong handling of forcepad edges


Jan, thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command only once, as it will automatically gather debugging information, in a terminal:
apport-collect 1472739

** Package changed: linux-lts-utopic (Ubuntu) => linux (Ubuntu)

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

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

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  Wrong handling of forcepad edges

Status in linux package in Ubuntu:

Bug description:
  I have experienced incorrect behaviour of the driver when forcepad
  very edges are touched (HP Elitebook 1040 G1). With Tap-and-drag
  gesture disabled and even tapping disabled (although this does not
  change anything) when one finger touches the touchpad and another taps
  the very edge of the touchpad (any side), the system behaves as if
  there was a click and hold action as long as the finger is on the
  touchpad. This seems to be linked to the driver reporting a left click
  when the second finger touches the veery edge of the touchpad, see
  output from evtest below.

  How to replicate: disable tapping. On the desktop, put one finger on
  the touchpad, then lightly tap the very 1mm of the edge. Move the
  first finger down and right and notice an area being selected. This
  should only happen when the finger is pressed (like for a click)
  against the touchpad and held so during the move.

  Attached are outputs from synclient and xinput.

  I believe it is a bug in a kernel driver.

  From system logs:
  [    3.349148] psmouse serio3: synaptics: Touchpad model: 1, fw: 8.1, id: 0x1e2a1, caps: 0xd40923/0x840300/0x12e800, board id: 2685, fw id: 1608298


  cat /proc/bus/input/devices

  I: Bus=0011 Vendor=0002 Product=0007 Version=01a1
  N: Name="SynPS/2 Synaptics TouchPad"
  P: Phys=isa0060/serio3/input0
  S: Sysfs=/devices/platform/i8042/serio3/input/input10
  U: Uniq=
  H: Handlers=mouse0 event5
  B: PROP=5
  B: EV=b
  B: KEY=e520 610000 0 0 0 0
  B: ABS=660800011000003


  Output from evtest of the very moment second finger touched the bottom
  edge of the touchpad:

  Event: time 1436383712.432784, type 3 (EV_ABS), code 58 (ABS_MT_PRESSURE), value 68
  Event: time 1436383712.432784, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 68
  Event: time 1436383712.432784, -------------- SYN_REPORT ------------
  Event: time 1436383712.514285, type 1 (EV_KEY), code 272 (BTN_LEFT), value 1
  Event: time 1436383712.514285, -------------- SYN_REPORT ------------
  Event: time 1436383712.554585, type 3 (EV_ABS), code 58 (ABS_MT_PRESSURE), value 69
  Event: time 1436383712.554585, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 6


  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.16.0-41-generic 3.16.0-41.57~14.04.1
  ProcVersionSignature: Ubuntu 3.16.0-41.57~14.04.1-generic 3.16.7-ckt11
  Uname: Linux 3.16.0-41-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.11
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Wed Jul  8 19:14:14 2015
  InstallationDate: Installed on 2015-05-14 (54 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  SourcePackage: linux-lts-utopic
  UpgradeStatus: No upgrade log present (probably fresh install)

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