[Bug 1899042] Re: System slow when using updated kernel

Good kernel: 5.4.0-45-generic
pci=noaer fixes bug #1521173
I will try to update things from the bad kernel, it will take a full day to do it, but I will try It.
Also, before knowing what was the problem, I tried to disable all updates from Software Updater. I will enable It and install all updates one of these days.

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Title:
System slow when using updated kernel

Status in linux package in Ubuntu:
Incomplete

Bug description:
System is slow when using kernel version 5.8.0-20-generic. (Low fps in
desktop, boot takes more time, opening any application takes seconds)

A temporal fix is use old kernel.

Since Apport did not have a system related category, I have to report
it here. I dont know how to gather more information about my system.

//Output of 'lsb_release -rd'
Description: Ubuntu Groovy Gorilla (development branch)
Release: 20.10

//Output of 'lshw'
Processor: Intel(R) Core(TM) i3-6006U CPU @ 2.00GHz

Also, resources are not at 100%, I have a SSD, 8GB RAM, is overkill for just using the system.
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu49
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: eladmin 1111 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: KDE
DistroRelease: Ubuntu 20.10
InstallationDate: Installed on 2020-08-16 (52 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 1bcf:2c9b Sunplus Innovation Technology Inc. HP TrueVision HD Camera
Bus 001 Device 003: ID 0bda:b008 Realtek Semiconductor Corp. Bluetooth Radio
Bus 001 Device 002: ID 046d:c534 Logitech, Inc. Unifying Receiver
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: HP HP Laptop 15-bs0xx
Package: linux (not installed)
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.8.0-20-generic root=UUID=7bc88721-682a-4c22-9e16-72a40d554f8b ro quiet splash pci=noaer vt.handoff=7
ProcVersionSignature: Ubuntu 5.8.0-20.21-generic 5.8.10
RelatedPackageVersions:
linux-restricted-modules-5.8.0-20-generic N/A
linux-backports-modules-5.8.0-20-generic N/A
linux-firmware 1.190
Tags: groovy
Uname: Linux 5.8.0-20-generic x86_64
UpgradeStatus: Upgraded to groovy on 2020-09-30 (8 days ago)
UserGroups: adm cdrom dip kismet libvirt lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 04/07/2017
dmi.bios.release: 15.2
dmi.bios.vendor: Insyde
dmi.bios.version: F.02
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: 8328
dmi.board.vendor: HP
dmi.board.version: 23.21
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.ec.firmware.release: 23.21
dmi.modalias: dmi:bvnInsyde:bvrF.02:bd04/07/2017:br15.2:efr23.21:svnHP:pnHPLaptop15-bs0xx:pvrType1ProductConfigId:rvnHP:rn8328:rvr23.21:cvnHP:ct10:cvrChassisVersion:
dmi.product.family: 103C_5335KV HP Notebook
dmi.product.name: HP Laptop 15-bs0xx
dmi.product.sku: 1VH28EA#ABE
dmi.product.version: Type1ProductConfigId
dmi.sys.vendor: HP

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