Lenovo Thinkpad T490 does not reliably detect change from BAT to AC

[Carlos Cesar Caballero Diaz]

Hi, Ubuntu 20.04 is not detecting changes form AC to battery correctly in my Lenovo Thinkpad T490, when the power source is connected or disconnected the following error appears:

    ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.RP09.PEGP.NVDN], AE_NOT_FOUND (20200528/psargs-330)
    ACPI Error: Aborting method \_SB.PCI0.LPCB.EC._Q27 due to previous error (AE_NOT_FOUND) (20200528/psparse-529)

Seems to be the same or similar issue at the ones described here: https://forum.manjaro.org/t/laptop-t490-does-not-reliably-detect-change-from-ac-to-bat/19906 and here: https://<email address hidden>/

    lsb_release -rd
    Description: Ubuntu 20.04.1 LTS
    Release: 20.04

Package version: 5.8.0.36.40~20.04.21

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.8.0-36-generic 5.8.0-36.40~20.04.1
ProcVersionSignature: Ubuntu 5.8.0-36.40~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-36-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.14
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Fri Jan 8 09:18:18 2021
InstallationDate: Installed on 2021-01-08 (0 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
ProcEnviron:
 LANGUAGE=es_CU:es
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=es_CU
 SHELL=/bin/bash
SourcePackage: linux-signed-hwe-5.8
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.