It's not a bug: I brought the T480s to the Lenovo support. The keyboard
was malfunctioned, so they changed it.
Now everything works just fine.
** Changed in: linux (Ubuntu)
Status: Confirmed => Invalid
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https://bugs.launchpad.net/bugs/1813988
Title:
ETPS/2 Elantech TrackPoint is locked vertically / can not move pointer
right and left
Status in linux package in Ubuntu:
Invalid
Bug description:
I am using a Lenovo Thinkpad T480s with Ubuntu Mate 18.04. On the
fresh setup the trackpoint worked flawlessly. After some kernel
updates (current one is 4.15.0-44) the trackpoint got
"stucked"/"locked" vertically. That means I can only move the pointer
up and down and not right and left. Sometimes I can move the pointer
to the right but then it jumps around uncontrollably and gets locked
at the right end of the desktop.
I tried a lot of different things: Compiled newest libinput, tried
hwe-kernel 4.18 and mainline-kernel 4.20. None of these made it work.
On random occassions the trackpoint worked fine but got stucked once
again in the same session. I think it got stucked when I
simultaneously moved the trackpoint and touched the touchpad with my
palm.
Touchpad is working fine though!
$ xinput
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer
(2)]
⎜ ↳ ETPS/2 Elantech Touchpad id=11 [slave pointer
(2)]
⎜ ↳ ETPS/2 Elantech TrackPoint id=12 [slave pointer
(2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave
keyboard (3)]
↳ Power Button id=6 [slave
keyboard (3)]
↳ Video Bus id=7 [slave
keyboard (3)]
↳ Sleep Button id=8 [slave
keyboard (3)]
↳ Integrated Camera: Integrated C id=9 [slave
keyboard (3)]
↳ AT Translated Set 2 keyboard id=10 [slave
keyboard (3)]
↳ ThinkPad Extra Buttons id=13 [slave
keyboard (3)]
$ dmesg | grep -i elan
[ 2.930410] psmouse serio1: elantech: assuming hardware version 4 (with
firmware version 0x7f3001)
[ 2.940877] psmouse serio1: elantech: Synaptics capabilities query result
0x90, 0x18, 0x0f.
[ 2.951284] psmouse serio1: elantech: Elan sample query result 00, 20, c9
[ 2.994917] input: ETPS/2 Elantech TrackPoint as
/devices/platform/i8042/serio1/input/input7
[ 3.008529] input: ETPS/2 Elantech Touchpad as
/devices/platform/i8042/serio1/input/input5
Is this a driver issue with elantech driver because the T480s is new
hardware? I stumpled upon different patches from Benjamin Tissoires who
suggests something like that:
https://patchwork.kernel.org/patch/10638703/
https://patchwork.kernel.org/patch/10324641/
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-44-generic 4.15.0-44.47
ProcVersionSignature: Ubuntu 4.15.0-44.47-generic 4.15.18
Uname: Linux 4.15.0-44-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: 1974 F.... pulseaudio
CurrentDesktop: MATE
Date: Wed Jan 30 21:59:58 2019
HibernationDevice: RESUME=UUID=0f5f9333-5826-4e4b-ba22-a0a7fce65754
InstallationDate: Installed on 2018-07-27 (187 days ago)
InstallationMedia: Ubuntu-MATE 18.04 LTS "Bionic Beaver" - Release amd64
(20180426)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 5986:2113 Acer, Inc
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: LENOVO 20L8S02D00
ProcEnviron:
LANGUAGE=de_DE
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=de_DE.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-44-generic
root=UUID=a69059e4-d10d-471b-a8a9-88692ccbabdd ro quiet splash vt.handoff=1
RelatedPackageVersions:
linux-restricted-modules-4.15.0-44-generic N/A
linux-backports-modules-4.15.0-44-generic N/A
linux-firmware 1.173.3
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/09/2018
dmi.bios.vendor: LENOVO
dmi.bios.version: N22ET35W (1.12 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20L8S02D00
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrN22ET35W(1.12):bd04/09/2018:svnLENOVO:pn20L8S02D00:pvrThinkPadT480s:rvnLENOVO:rn20L8S02D00:rvrNotDefined:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad T480s
dmi.product.name: 20L8S02D00
dmi.product.version: ThinkPad T480s
dmi.sys.vendor: LENOVO
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