Touchpad hanging/jumping and Numpad not working - ASUS VivoBook M433IA

[Kristof_Attila]

This issue is related to the issue 1810183 : https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1810183
This issue arises on a similar ASUS model, the M433IA, with the ryzen 4700 cpu, on Ubuntu 20.04.1 LTS
Other than the integrated numpad not being illuminated and working, the touchpad itself has several issues:
- The mouse sometimes hangs on 'scrolling', even using only one finger.
- The pointer jumps from time to time, or even starts rapidly jumping up and down approx. 5cm.
- The mouse sometimes is clicking without input (while jumping)
- The mouse sometimes stops working completely, with no movement nor ability to click.

This behavior happens with and without the synaptics drivers. Only work around is the usage of an external mouse.

Ubuntu is installed in a dual-boot config and there are no issues when using Windows.
The BIOS is updated to the latest version.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-42-generic 5.4.0-42.46
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: angelina 1472 F.... pulseaudio
 /dev/snd/controlC0: angelina 1472 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Mon Jul 27 15:38:27 2020
InstallationDate: Installed on 2020-07-26 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: ASUSTeK COMPUTER INC. VivoBook_ASUSLaptop X421IA_M433IA
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-42-generic root=UUID=0185abb8-457b-4aaf-ac34-a228a22d286d ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-5.4.0-42-generic N/A
 linux-backports-modules-5.4.0-42-generic N/A
 linux-firmware 1.187.2
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/22/2020
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: X421IA.303
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: X421IA
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrX421IA.303:bd05/22/2020:svnASUSTeKCOMPUTERINC.:pnVivoBook_ASUSLaptopX421IA_M433IA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX421IA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.family: VivoBook
dmi.product.name: VivoBook_ASUSLaptop X421IA_M433IA
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.

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

This change was made by a bot.

[Kai-Heng Feng (kaihengfeng)]

Is the log collected when touchpad wasn't behaving?

[Kristof_Attila (kramer84)]

No, I think the mouse was already disabled, so it may not be in the log. What is the command to save the log when I experience misbehavior?
Apologies for the delay, the machine is not mine.

[Kai-Heng Feng (kaihengfeng)]

Enable it and attach dmesg.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]