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[Bug 1472739] Re: Wrong handling of forcepad edges

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** Description changed:

  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.
+ 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 
+ 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 at time 1436381287.56003 and was lifted at time
- 1436381287.822668.
+ edge of the touchpad:
  
- Event: time 1436381287.013354, -------------- SYN_REPORT ------------
- Event: time 1436381287.033749, type 3 (EV_ABS), code 58 (ABS_MT_PRESSURE), value 64
- Event: time 1436381287.033749, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 64
- Event: time 1436381287.033749, -------------- SYN_REPORT ------------
- Event: time 1436381287.276061, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 3758
- Event: time 1436381287.276061, type 3 (EV_ABS), code 0 (ABS_X), value 3758
- Event: time 1436381287.276061, -------------- SYN_REPORT ------------  **************** THE BOTTOM EDGE TOUCHED 
- Event: time 1436381287.560034, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 3760
- Event: time 1436381287.560034, type 3 (EV_ABS), code 0 (ABS_X), value 3760
- Event: time 1436381287.560034, type 1 (EV_KEY), code 325 (BTN_TOOL_FINGER), value 0
- Event: time 1436381287.560034, type 1 (EV_KEY), code 333 (BTN_TOOL_DOUBLETAP), value 1
- Event: time 1436381287.560034, -------------- SYN_REPORT ------------
- Event: time 1436381287.600764, type 3 (EV_ABS), code 47 (ABS_MT_SLOT), value 1
- Event: time 1436381287.600764, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value 3519
- Event: time 1436381287.600764, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 3760
- Event: time 1436381287.600764, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 4508
- Event: time 1436381287.600764, type 3 (EV_ABS), code 58 (ABS_MT_PRESSURE), value 36
- Event: time 1436381287.600764, -------------- SYN_REPORT ------------
- Event: time 1436381287.701583, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value -1
- Event: time 1436381287.701583, type 1 (EV_KEY), code 325 (BTN_TOOL_FINGER), value 1
- Event: time 1436381287.701583, type 1 (EV_KEY), code 333 (BTN_TOOL_DOUBLETAP), value 0
- Event: time 1436381287.701583, -------------- SYN_REPORT ------------
- Event: time 1436381287.742249, type 3 (EV_ABS), code 47 (ABS_MT_SLOT), value 0
- Event: time 1436381287.742249, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 3762
- Event: time 1436381287.742249, type 3 (EV_ABS), code 0 (ABS_X), value 3762
- Event: time 1436381287.742249, -------------- SYN_REPORT ------------ ***********THE FINGER RISED FROM THE BOTTOM EDGE
- Event: time 1436381287.822668, type 3 (EV_ABS), code 58 (ABS_MT_PRESSURE), value 65
- Event: time 1436381287.822668, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65
- Event: time 1436381287.822668, -------------- SYN_REPORT ------------
- Event: time 1436381287.883764, type 3 (EV_ABS), code 58 (ABS_MT_PRESSURE), value 64
- Event: time 1436381287.883764, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 64
- 
+ 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
  
  Thanks,
  Jan
  
  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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https://bugs.launchpad.net/bugs/1472739

Title:
  Wrong handling of forcepad edges

Status in linux-lts-utopic package in Ubuntu:
  New

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

  Thanks,
  Jan

  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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