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[Jan <jpalczew.net@xxxxxxxxx>]

The bug is still present in unchanged form in the most recent upstream kernel
Linux mat-lin4117 4.4.0-040400rc6-generic #201512202030 SMP Mon Dec 21 01:32:09 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Thanks

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https://bugs.launchpad.net/bugs/1472739

Title:
  Wrong handling of forcepad edges

Status in linux package in Ubuntu:
  Incomplete

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)
  --- 
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  jp         2090 F.... pulseaudio
   /dev/snd/controlC0:  jp         2090 F.... pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=c4a08a5c-08ad-42d4-8a39-76149ed3a95e
  InstallationDate: Installed on 2015-05-14 (220 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  Lsusb:
   Bus 001 Device 002: ID 8087:8000 Intel Corp. 
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 002 Device 006: ID 05c8:0369 Cheng Uei Precision Industry Co., Ltd (Foxlink) 
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP EliteBook Folio 1040 G1
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-57-generic root=UUID=f2cdc7c4-e5be-4934-9e34-3bb55e1d87fc ro acpi_osi=Linux "acpi_osi=!Windows 2012"
  ProcVersionSignature: Ubuntu 3.16.0-57.77~14.04.1-generic 3.16.7-ckt20
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-57-generic N/A
   linux-backports-modules-3.16.0-57-generic  N/A
   linux-firmware                             1.127.19
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  Tags:  trusty
  Uname: Linux 3.16.0-57-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers
  _MarkForUpload: True
  dmi.bios.date: 07/20/2015
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: L83 Ver. 01.32
  dmi.board.name: 213E
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: KBC Version 24.2D
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvrL83Ver.01.32:bd07/20/2015:svnHewlett-Packard:pnHPEliteBookFolio1040G1:pvrA3008D510B03:rvnHewlett-Packard:rn213E:rvrKBCVersion24.2D:cvnHewlett-Packard:ct10:cvr:
  dmi.product.name: HP EliteBook Folio 1040 G1
  dmi.product.version: A3008D510B03
  dmi.sys.vendor: Hewlett-Packard

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