Moved to: https://gitlab.freedesktop.org/libinput/libinput/issues/22
** Description changed: + https://gitlab.freedesktop.org/libinput/libinput/issues/22 + + --- + 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 ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17 Uname: Linux 4.15.0-20-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' 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_DIR=<set> LANG=en_CA.UTF-8 SHELL=/bin/zsh ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-20-generic root=UUID=e504e156-d82a-4ff6-8582-ced4b5d9fd8c ro rootflags=subvol=@ quiet splash vt.handoff=1 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.asset.tag: Not Available dmi.board.name: 33691J6 dmi.board.vendor: LENOVO dmi.board.version: 0B98401 PRO dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrG8ET96WW(2.56):bd12/18/2013:svnLENOVO:pn33691J6:pvrThinkPadX131e:rvnLENOVO:rn33691J6:rvr0B98401PRO:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.family: ThinkPad X131e dmi.product.name: 33691J6 dmi.product.version: ThinkPad X131e dmi.sys.vendor: LENOVO version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.91-2 version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.0~rc5-1ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.0~rc5-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libinput in Ubuntu. https://bugs.launchpad.net/bugs/1773276 Title: Cursor jumps at the end of trackpoint movement with libinput 1.9+ on thinkpads on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/libinput/+bug/1773276/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
