Synaptics touchpad behaving erratically since 19.04/19.10 (it worked fine in 18.04)

[Brinstar]

I don't know if xinput is the correct package to report this against but the touchpad has been messed up since 19.04 and it hasn't changed in 19.10. 18.04 worked normally.

The symptom is basically that when tracking the pointer horizontally it moves very jerkily. Vertical movement is slightly better but still seems off.

If I should report this against a difference package, let me know which one.

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: xinput 1.6.3-0ubuntu1
ProcVersionSignature: Ubuntu 5.3.0-23.25-generic 5.3.7
Uname: Linux 5.3.0-23-generic x86_64
ApportVersion: 2.20.11-0ubuntu8.2
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Thu Nov 14 11:40:28 2019
DistUpgraded: 2019-09-27 15:23:11,960 INFO cache.commit()
DistroCodename: eoan
DistroVariant: ubuntu
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company 3rd Gen Core processor Graphics Controller [103c:183f]
InstallationDate: Installed on 2019-08-03 (102 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
MachineType: Hewlett-Packard HP Pavilion g6 Notebook PC
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.3.0-23-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
SourcePackage: xinput
UpgradeStatus: Upgraded to eoan on 2019-09-27 (47 days ago)
dmi.bios.date: 09/07/2016
dmi.bios.vendor: Insyde
dmi.bios.version: F.27
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: 183F
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 56.32
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnInsyde:bvrF.27:bd09/07/2016:svnHewlett-Packard:pnHPPaviliong6NotebookPC:pvr0887110000345910000620100:rvnHewlett-Packard:rn183F:rvr56.32:cvnHewlett-Packard:ct10:cvrChassisVersion:
dmi.product.family: 103C_5335KV G=N L=CON B=HP S=PAV X=Null
dmi.product.name: HP Pavilion g6 Notebook PC
dmi.product.sku: D1Q47EA#ABU
dmi.product.version: 0887110000345910000620100
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.99-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 19.2.1-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.5+git20191008-0ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.0.1-1ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20190815-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1