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
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1809993
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.