This problem includes two situations, one is the jumpy cursor with Trackpoint, another is the trackpoint totally doesn't work.
This problem will randomly happen on both lenovo x230s and lenovo x240s with ubuntu Linux installed (any version). And on both machines, i kept the ubuntu rootfs and replaced the ubuntu linux kernel with upstream latest kernel, linux-3.8, linux-3.5, linux-3.0 and linux-2.6.38, the result didn't change, the problem still happened randomly. Then on the x230s, i installed windows7 home basic edition, CentOS-6.4-x86_64, openSUSE-12.3 and Fedora-Live-Desktop-x86_64-19-1, the result was same as the one got on the ubuntu Linux, this problem still can happen randomly. Through debugging, i found if i8042 want to communicate with trackpoint device, it will send the command or data to synaptics trackpad device first, then trackpad device send the command or data to trackpoint device through pass-through write, so we can say synaptic trackpad is the master device, trackpoint is the guest device. The problem is here, when i8042 send commands/datas to the guest devices, it will fail randomly both on x230s and x240s, let's suppose a situation, the host want to send a ENABLE(0xf4) to the guest device, but this command is failed to pass to guest device, so the trackpoint can't work totally. And i did debugging on lenovo T540 and lenovo x130e as well, the communication between i8042 and trackpoint device was very stable, never failed. Based on my investigation, i doubt more or less, this problem has some relation with hardware, according to the section 5.2.1 in the page 57 of Synaptics PS/2 TouchPad Interfacing Guide (http://www.synaptics.com/sites/default/files/511-000275-01_RevB.pdf), i doubt the guest port doesn't solder a proper pull-up resistor on lenovo x230s and lenovo x240s. -- 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/1226999 Title: [Lenovo X230s] Jumpy cursor with TPPS/2 IBM Trackpoint Status in “linux” package in Ubuntu: Confirmed Bug description: CID: 201301-12655 Lenovo X230S Steps: 1. Install 12.04.3 and boot to desktop. 2. Try to control coursor with the trackpoint (TPPS/2 IBM Trackpoint) Expected result: Cursor could be controlled smoothly by using the trackpoint. Actual result: Cursor jumping around, if try to move it vertically / horizontally, it will move toward that direction and jumping in a zig-zag pattern. Please find attachment for xinput list-props, xev and evtest result. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.8.0-29-generic 3.8.0-29.42~precise1 [modified: boot/vmlinuz-3.8.0-29-generic] ProcVersionSignature: Ubuntu 3.8.0-29.42~precise1-generic 3.8.13.5 Uname: Linux 3.8.0-29-generic x86_64 ApportVersion: 2.0.1-0ubuntu17.4 Architecture: amd64 Date: Wed Sep 18 04:06:34 2013 InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820.1) MarkForUpload: True ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: linux-lts-raring UpgradeStatus: No upgrade log present (probably fresh install) --- AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.8.0-29-generic. ApportVersion: 2.0.1-0ubuntu17.4 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC269VC Analog [ALC269VC Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu 1488 F.... pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0x91530000 irq 45' Mixer name : 'Intel PantherPoint HDMI' Components : 'HDA:10ec0269,17aa2209,00100203 HDA:80862806,80860101,00100000' Controls : 29 Simple ctrls : 11 Card29.Amixer.info: Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw unknown' Mixer name : 'ThinkPad EC (unknown)' Components : '' Controls : 1 Simple ctrls : 1 Card29.Amixer.values: Simple mixer control 'Console',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [on] DistroRelease: Ubuntu 12.04 HibernationDevice: RESUME=UUID=aaf763fb-e63c-4989-84ce-9270713c69a5 InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820.1) MachineType: LENOVO 20AG0C1 MarkForUpload: True Package: linux (not installed) ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-29-generic root=UUID=d0749200-545f-434c-81df-90c494ea4f04 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.8.0-29.42~precise1-generic 3.8.13.5 RelatedPackageVersions: linux-restricted-modules-3.8.0-29-generic N/A linux-backports-modules-3.8.0-29-generic N/A linux-firmware 1.79.6 Tags: precise running-unity Uname: Linux 3.8.0-29-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo dmi.bios.date: 02/18/2013 dmi.bios.vendor: LENOVO dmi.bios.version: GGET15WW (1.03 ) dmi.board.asset.tag: Not Available dmi.board.name: 20AG0C1 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: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGGET15WW(1.03):bd02/18/2013:svnLENOVO:pn20AG0C1:pvrThinkPadX230s:rvnLENOVO:rn20AG0C1:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20AG0C1 dmi.product.version: ThinkPad X230s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1226999/+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
