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 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1813988/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp