touchpad does't work properly

[Bulat]

Ubuntu is installed on the Dell latitude 7480. This model has laptop with two rows of buttons.
Lower row doesn't work at all since I installed ubuntu. Before this, with Windows installed there was no problems.

Upper row works for some time after waking up, then it stops reacting either at all, or works only in some of the opened programs, e.g. firefox, terminal, etc. If I close/open the lid, thus log out and log in, it works until I try to launch any new program, then usually stops reacting completely.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-31-generic 5.4.0-31.35
ProcVersionSignature: Ubuntu 5.4.0-31.35-generic 5.4.34
Uname: Linux 5.4.0-31-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: bulatm 1468 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu May 21 17:26:47 2020
InstallationDate: Installed on 2020-05-18 (2 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 003: ID 8087:0a2b Intel Corp.
 Bus 001 Device 002: ID 0bda:5650 Realtek Semiconductor Corp. Integrated Webcam_HD
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. Latitude 7480
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-31-generic root=UUID=ffda3200-2cb6-451e-96ba-db4240c8a513 ro i8042.reset quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-5.4.0-31-generic N/A
 linux-backports-modules-5.4.0-31-generic N/A
 linux-firmware 1.187
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/03/2019
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.16.1
dmi.board.name: 00F6D3
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.16.1:bd10/03/2019:svnDellInc.:pnLatitude7480:pvr:rvnDellInc.:rn00F6D3:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: Latitude
dmi.product.name: Latitude 7480
dmi.product.sku: 07A0
dmi.sys.vendor: Dell Inc.

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

This change was made by a bot.

[Hsuan-Yu Lin (shanelin)]

Could you follow the instruction below to update the latest kernel?

1. Goto https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.7-rc7/
2. Download these files:

https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.7-rc7/linux-headers-5.7.0-050700rc7_5.7.0-050700rc7.202005242331_all.deb
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.7-rc7/linux-headers-5.7.0-050700rc7-generic_5.7.0-050700rc7.202005242331_amd64.deb
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.7-rc7/linux-image-unsigned-5.7.0-050700rc7-generic_5.7.0-050700rc7.202005242331_amd64.deb
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.7-rc7/linux-modules-5.7.0-050700rc7-generic_5.7.0-050700rc7.202005242331_amd64.deb

3. Put them into the same folders, and then run:

sudo dpkg -i *.deb

4. Reboot

After installing the v5.7-rc7, please retest your touchpad, to see whether it works or not?

[Bulat (bulatm)]

I did everything as suggested.
After rebooting new Kernel failed to load. I had to manually recover to 5.4.

[Bulat (bulatm)]

I attach a photo of the error message I get upon booting

[Hsuan-Yu Lin (shanelin)]

Hi, please try out using the different ways below:

* Disable secure boot and then boot v5.7-rc7 (or any latest kernel from https://kernel.ubuntu.com/~kernel-ppa/mainline)

* Add boot command: i8042.reset i8042.nomux i8042.nopnp i8042.noloop
(Reference: https://askubuntu.com/questions/525629/touchpad-is-not-recognized)

* Install 5.6.0-1010-oem kernel:

$ sudo apt-get update
$ sudo apt-get install linux-modules-5.6.0-1010-oem linux-image-5.6.0-1010-oem linux-headers-5.6.0-1010-oem