Wrong handling of forcepad edges
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Confirmed
|
Medium
|
Unassigned |
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/
****
cat /proc/bus/
I: Bus=0011 Vendor=0002 Product=0007 Version=01a1
N: Name="SynPS/2 Synaptics TouchPad"
P: Phys=isa0060/
S: Sysfs=/
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-
ProcVersionSign
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/
/dev/snd/
CurrentDesktop: Unity
DistroRelease: Ubuntu 14.04
HibernationDevice: RESUME=
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=
ProcVersionSign
RelatedPackageV
linux-
linux-
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-
dmi.product.name: HP EliteBook Folio 1040 G1
dmi.product.
dmi.sys.vendor: Hewlett-Packard
description: | updated |
tags: | added: bios-outdated-1.33 |
tags: | added: kernel-bug-exists-upstream kernel-bug-exists-upstream-4.4-rc6 |
Changed in linux (Ubuntu): | |
status: | Incomplete → Confirmed |
Changed in linux (Ubuntu): | |
status: | Confirmed → Incomplete |
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