Cursor jumps at the end of trackpoint movement with libinput 1.9+ on thinkpads on Bionic
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
libinput |
Unknown
|
Medium
|
|||
libinput (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned |
Bug Description
https:/
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After installing bionic on two thinkpads (x131e, x230), I've noticed that once you stop motion on the trackpoint (and possibly apply a miniscule amount of pressure on it after stopping), the cursor will jump in the direction of the previous motion by a small amount. This makes the computer incredibly difficult to use as you can't accurately target things. Furthermore, the speed of the cursor has increased substantially.
I have a slow motion video captured on an iPhone that demonstrates this behaviour but I can't upload it at this moment. If someone wants to see it, I might be able to post it later.
I've also narrowed down the problem to libinput. I bisected the different releases via the debian sources (with the packages built from them) and narrowed it to some changes between 1.8 and 1.9. This makes sense as I previously didn't notice this behaviour on Artful, which is on libinput 1.8. This issue affects all distros as well, given that it's a libinput issue.
I also tested the latest libinput, 1.10.7, and it does NOT resolve this issue.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: libinput-bin 1.10.4-1
ProcVersionSign
Uname: Linux 4.15.0-20-generic x86_64
NonfreeKernelMo
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompizPlugins: No value set for `/apps/
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Thu May 24 20:07:52 2018
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
DkmsStatus:
acpi_call, 1.2.0, 4.15.0-15-generic, x86_64: installed
acpi_call, 1.2.0, 4.15.0-20-generic, x86_64: installed
acpi_call, 1.2.0, 4.15.0-22-generic, x86_64: installed
GraphicsCard:
Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Lenovo 3rd Gen Core processor Graphics Controller [17aa:21fe]
InstallationDate: Installed on 2018-04-16 (38 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Beta amd64 (20180404)
MachineType: LENOVO 33691J6
ProcEnviron:
LANGUAGE=en_CA:en
PATH=(custom, no user)
XDG_RUNTIME_
LANG=en_CA.UTF-8
SHELL=/bin/zsh
ProcKernelCmdLine: BOOT_IMAGE=
SourcePackage: libinput
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/18/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: G8ET96WW (2.56 )
dmi.board.
dmi.board.name: 33691J6
dmi.board.vendor: LENOVO
dmi.board.version: 0B98401 PRO
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.family: ThinkPad X131e
dmi.product.name: 33691J6
dmi.product.
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.91-2
version.
version.
version.
version.
version.
version.
version.
Changed in libinput: | |
importance: | Unknown → Medium |
status: | Unknown → Incomplete |
Changed in libinput: | |
status: | Incomplete → In Progress |
Changed in libinput: | |
status: | In Progress → Unknown |
description: | updated |
tags: | added: trackpoint |
Please report the problem to the libinput developers here: /bugs.freedeskt op.org/ enter_bug. cgi?product= wayland& component= libinput
https:/
and then let us know the URL of the new bug.