*** This bug is a duplicate of bug 1854798 ***
https://bugs.launchpad.net/bugs/1854798
I had the exact same problem, and downgrading back to version 4.15.0-70
worked fine for me, but upgrading to 5.4.2-050402 worked for me as well.
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https://bugs.launchpad.net/bugs/1854895
Title:
touchpad stopped working after the update
Status in Linux:
New
Status in linux package in Ubuntu:
Confirmed
Bug description:
After the automatic software update the touchpad stopped working in my
laptop.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-72-generic 4.15.0-72.81
ProcVersionSignature: Ubuntu 4.15.0-72.81-generic 4.15.18
Uname: Linux 4.15.0-72-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.9
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: anil 1722 F.... pulseaudio
/dev/snd/controlC0: anil 1722 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Tue Dec 3 10:44:48 2019
InstallationDate: Installed on 2018-12-21 (346 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64
(20180725)
MachineType: Dell Inc. Inspiron 3542
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-72-generic
root=UUID=a85be26b-aca7-48bd-b03b-6a99e1587772 ro quiet splash vt.handoff=1
RelatedPackageVersions:
linux-restricted-modules-4.15.0-72-generic N/A
linux-backports-modules-4.15.0-72-generic N/A
linux-firmware 1.173.12
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/23/2018
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A14
dmi.board.name: 09V1VC
dmi.board.vendor: Dell Inc.
dmi.board.version: A14
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias:
dmi:bvnDellInc.:bvrA14:bd05/23/2018:svnDellInc.:pnInspiron3542:pvrNotSpecified:rvnDellInc.:rn09V1VC:rvrA14:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.name: Inspiron 3542
dmi.product.version: Not Specified
dmi.sys.vendor: Dell Inc.
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