Public bug reported:
Summary:
After kernel update the trackpad advanced functions, like two finger scrolling
and mouse acceleration have stopped working.
Expected Result:
Two finer scroll works and the mouse has acceleration features work
Actual Result:
Two finer scroll works and the mouse has acceleration features do not work
Steps to reproduce:
1. Lenovo X1C6 (LENOVO 20KHCTO1WW/20KHCTO1WW, BIOS N23ET59W (1.34 ) 11/08/2018)
2. Install 18.04 LTS
3. config-4.15.0-42-generic acceleration works, while config-4.15.0-43-generic
does not
This appears to be some sort of regression or change in behavior between kernel
versions.
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: powersj 1597 F.... pulseaudio
CurrentDesktop: communitheme:ubuntu:GNOME
DistroRelease: Ubuntu 18.04
HibernationDevice: RESUME=UUID=1eb43198-8ef5-4035-8b81-74c3e2936ad7
InstallationDate: Installed on 2018-12-06 (22 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 5986:2115 Acer, Inc
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: LENOVO 20KHCTO1WW
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-42-generic
root=/dev/mapper/ubuntu--vg-root ro
ProcVersionSignature: Ubuntu 4.15.0-42.45-generic 4.15.18
RelatedPackageVersions:
linux-restricted-modules-4.15.0-42-generic N/A
linux-backports-modules-4.15.0-42-generic N/A
linux-firmware 1.173.2
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
Tags: bionic
Uname: Linux 4.15.0-42-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip libvirt lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 11/08/2018
dmi.bios.vendor: LENOVO
dmi.bios.version: N23ET59W (1.34 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20KHCTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40709 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrN23ET59W(1.34):bd11/08/2018:svnLENOVO:pn20KHCTO1WW:pvrThinkPadX1Carbon6th:rvnLENOVO:rn20KHCTO1WW:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad X1 Carbon 6th
dmi.product.name: 20KHCTO1WW
dmi.product.version: ThinkPad X1 Carbon 6th
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: apport-collected bionic
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https://bugs.launchpad.net/bugs/1809993
Title:
Lenovo X1C6 trackpad functions broken
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