Elantech Touchpad not working w/ Synaptics Driver on Acer Aspire 5755

[T Parys]

1) Ubuntu 20.04.1 LTS

2) Package linux-image-5.4.0-48-generic

3) Expected to upgrade to 20.04 with existing hardware already supported

4) Upgraded with odd, erratic behavior from laptop touchpad (Elantech). Tap to click did not work, but scrolling did. After toying with settings, tap to click starting working, but scrolling stopped working.

I found a link which provided a fix for me, which was uninstalling the xorg-input-synaptics package, and forcing the system to use libinput instead. the user Pilot6 suggested this was a kernel bug and to file a bug report accordingly.

https://askubuntu.com/questions/1250841/ubuntu-20-04-elantech-touchpad-not-working

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-48-generic 5.4.0-48.52
ProcVersionSignature: Ubuntu 5.4.0-48.52-generic 5.4.60
Uname: Linux 5.4.0-48-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.9
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: tim 1391 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: GNOME
Date: Sat Sep 26 13:48:29 2020
InstallationDate: Installed on 2013-05-22 (2683 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MachineType: Acer Aspire 5755
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-48-generic root=UUID=5c6346b5-949b-4636-8e99-fb4002e2e81d ro acpi_osi=Linux acpi_backlight=vendor libata.allow_tpm=1
RelatedPackageVersions:
 linux-restricted-modules-5.4.0-48-generic N/A
 linux-backports-modules-5.4.0-48-generic N/A
 linux-firmware 1.187.3
SourcePackage: linux
UpgradeStatus: Upgraded to focal on 2020-09-26 (0 days ago)
dmi.bios.date: 09/07/2011
dmi.bios.vendor: Acer
dmi.bios.version: V1.14
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: JV51_HR
dmi.board.vendor: Acer
dmi.board.version: Base Board Version
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.14
dmi.modalias: dmi:bvnAcer:bvrV1.14:bd09/07/2011:svnAcer:pnAspire5755:pvrV1.14:rvnAcer:rnJV51_HR:rvrBaseBoardVersion:cvnAcer:ct10:cvrV1.14:
dmi.product.name: Aspire 5755
dmi.product.version: V1.14
dmi.sys.vendor: Acer
modified.conffile..etc.default.apport: [modified]
mtime.conffile..etc.default.apport: 2015-05-16T07:56:07.188547

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

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