Rashi, in order to allow additional upstream mainline kernel developers to
examine the issue, at your earliest convenience, could you please test the
latest mainline kernel available from
http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D ? Please keep in mind
the following:
1) The one to test is at the very top line at the top of the page (not the
daily folder).
2) The release names are irrelevant.
3) The folder time stamps aren't indicative of when the kernel actually was
released upstream.
4) Install instructions are available at
https://wiki.ubuntu.com/Kernel/MainlineBuilds .
If testing on your main install would be inconvenient, one may:
1) Install Ubuntu to a different partition and then test this there.
2) Backup, or clone the primary install.
If the latest kernel did not allow you to test to the issue (ex. you couldn't
boot into the OS) please make a comment in your report about this, and continue
to test the next most recent kernel version until you can test to the issue.
Once you've tested the mainline kernel, please comment on which kernel version
specifically you tested. If this issue is not reproducible in the mainline
kernel, please add the following tags by clicking on the yellow circle with a
black pencil icon, next to the word Tags, located at the bottom of the report
description:
kernel-fixed-upstream
kernel-fixed-upstream-X.Y-rcZ
Where X, and Y are the first two numbers of the kernel version, and Z is
the release candidate number if it exists.
If the issue is reproducible with the mainline kernel, please add the following
tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-X.Y-rcZ
Please note, an error to install the kernel does not fit the criteria of
kernel-bug-exists-upstream.
Also, you don't need to apport-collect further unless specifically
requested to do so.
It is most helpful that after testing of the latest mainline kernel is
complete, you mark this report Status Confirmed.
Lastly, to keep this issue relevant to upstream, please continue to test
the latest mainline kernel as it becomes available.
Thank you for your help.
** Description changed:
- Click lock is a behavior where you do a button click once, the system
- will register the click as "holding the button".
+ The disabled touchpad of my Thinkpad T450s sometimes triggers a click
+ lock when I touch it with my palm. This is typical when I'm reaching to
+ click the trackpoint's (red pointing stick) left button.
- In laptop Thinkpad T450s I have an issue where the disabled touchpad
- sometimes could trigger the click lock when clicking the trackpoint (red
- pointing stick)'s left button.
+ Reproduction steps:
+ 1. Disable the touchpad via Ubuntu's "Mouse & Touchpad" setting.
- Basically it happens randomly when my palm is touching the touchpad
- while I'm clicking the trackpoint left button.
+ 2. Place and hold two fingers in contact with the touchpad.
- But I found a way to make the bug occurs easily:
- 1. Disable the touchpad first. You can do this from ubuntu's "Mouse &
Touchpad" setting.
+ 3. Click then release the trackpoint's left button once while the cursor
+ is on the desktop area. Then immediately move the cursor with the
+ pointing stick.
- 2. Put your two fingers on the touchpad (whether your two fingers are
- tapping or pressing the clickpad, it doesn't matter). You could use your
- left hand's index and middle finger for this.
-
- 3. While your left hand's two fingers are on the touchpad, use your
- right hand to click the trackpoint's left button once (don't hold it) on
- the desktop area, then immediately move the cursor with the pointing
- stick.
-
- 4. If the click lock effect gets triggered, you would see you make a
- selection drag on the desktop area. If the click lock doesn't happen,
- repeat again the step 3.
-
+ 4. If the click lock effect gets triggered, a selection would have been
+ made and dragged on the desktop area. If the click lock doesn't happen,
+ repeat step 3.
The evtest log on the trackpoint:
-
$evtest /dev/input/event15
Input driver version is 1.0.1
Input device ID: bus 0x11 vendor 0x2 product 0xa version 0x0
Input device name: "TPPS/2 IBM TrackPoint"
Supported events:
Event type 0 (EV_SYN)
Event type 1 (EV_KEY)
Event code 272 (BTN_LEFT)
Event code 273 (BTN_RIGHT)
Event code 274 (BTN_MIDDLE)
Event type 2 (EV_REL)
Event code 0 (REL_X)
Event code 1 (REL_Y)
Properties:
Property type 0 (INPUT_PROP_POINTER)
Property type 5 (INPUT_PROP_POINTING_STICK)
Testing ... (interrupt to exit)
Event: time 1496047216.720823, type 1 (EV_KEY), code 272 (BTN_LEFT), value 1
Event: time 1496047216.720823, -------------- SYN_REPORT ------------
Event: time 1496047216.778898, type 1 (EV_KEY), code 272 (BTN_LEFT), value 0
Event: time 1496047216.778898, -------------- SYN_REPORT ------------
Event: time 1496047220.234518, type 1 (EV_KEY), code 272 (BTN_LEFT), value 1
Event: time 1496047220.234518, -------------- SYN_REPORT ------------
If the click lock is not triggered, you would see BTN_LEFT's value 1 & 0:
-
Event: time 1496047216.720823, type 1 (EV_KEY), code 272 (BTN_LEFT), value 1
Event: time 1496047216.778898, type 1 (EV_KEY), code 272 (BTN_LEFT), value 0
But if the click lock is triggered, you would only see value 1:
-
- Event: time 1496047220.234518, type 1 (EV_KEY), code 272 (BTN_LEFT),
- value 1
+ Event: time 1496047220.234518, type 1 (EV_KEY), code 272 (BTN_LEFT), value 1
I am guessing "value 0" means release the button. So when click lock is
happening, the button left is not released at all, thus it's producing
"hold the button" effect.
- More Informations:
- This issue doesn't happen on other OS like Windows, but I can confirm it
happens on most modern linux distro and DE I've tried (e.g. ubuntu v17/v16,
kubuntu, ubuntu mate, xubuntu, lubuntu, linux mint, fedora, open suse, etc). So
this issue must be coming from the synaptic touchpad driver, or maybe from the
kernel (?)
+ This issue doesn't happen with Windows. I can confirm it happens on
+ Ubuntu v17/v16, Kubuntu, Ubuntu Mate, Xubuntu, Lubuntu, Linux Mint,
+ Fedora, and Open Suse.
- Also, the issue doesn't occur on older thinkpad models which doesn't use same
clickpad type touchpad, e.g. T430 or X230. For newer thinkpad models (e.g.
T460, X260, etc) which uses same clickpad design, same issue might exists too
(need confirmation though).
+ Also, the issue doesn't occur on older thinkpad models which doesn't use
+ the same clickpad, e.g. T430 or X230.
+
+ WORKAROUND: Execute at a terminal:
+ sudo rmmod psmouse && sudo modprobe psmouse proto=imps
+
---
ApportVersion: 2.20.7-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: ubuntu 3980 F.... pulseaudio
/dev/snd/controlC0: ubuntu 3980 F.... pulseaudio
CasperVersion: 1.387
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 17.10
LiveMediaBuild: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
MachineType: LENOVO 20BX001LUS
Package: linux (not installed)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: file=/cdrom/preseed/username.seed boot=casper
initrd=/casper/initrd.lz quiet splash --- maybe-ubiquity
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
RelatedPackageVersions:
linux-restricted-modules-4.13.0-16-generic N/A
linux-backports-modules-4.13.0-16-generic N/A
linux-firmware 1.169
Tags: artful
Uname: Linux 4.13.0-16-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 03/16/2017
dmi.bios.vendor: LENOVO
dmi.bios.version: JBET64WW (1.28 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20BX001LUS
dmi.board.vendor: LENOVO
dmi.board.version: SDK0E50510 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrJBET64WW(1.28):bd03/16/2017:svnLENOVO:pn20BX001LUS:pvrThinkPadT450s:rvnLENOVO:rn20BX001LUS:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad T450s
dmi.product.name: 20BX001LUS
dmi.product.version: ThinkPad T450s
dmi.sys.vendor: LENOVO
** Tags added: bios-outdated-1.30
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1694225
Title:
[Thinkpad T450s] Click lock effect on trackpoint left button when
touchpad is disabled
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