upower hogs CPU (50%, 27% etc, laptop lags)

[mkoniecz]

`upower --monitor-detail` has shown noninsane battery info twice and is silent otherwise, `upowerd` appears in `top` as eating 27%, 50% CPU (not all the time, but most of the time it is somehow top user of CPU)

Computer become noticeably laggy recently, `upowerd` is so far sole abnormal symptom

I was advised to file bug by people from Lubuntu Telegram channel. I would be happy to provide more info, but plan to reinstall OS soon due to macabre lagginess.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: upower 0.99.11-1build2
ProcVersionSignature: Ubuntu 5.4.0-99.112-lowlatency 5.4.162
Uname: Linux 5.4.0-99-lowlatency x86_64
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: LXQt
Date: Sun Feb 13 18:42:10 2022
InstallationDate: Installed on 2021-01-06 (403 days ago)
InstallationMedia: Lubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
SourcePackage: upower
UpgradeStatus: No upgrade log present (probably fresh install)

[mkoniecz (matkoniecz)]

https://bugs.launchpad.net/ubuntu/+source/upower/+bug/1420395 is similar but with distinct symptoms - here too many updates appear to be not the cause of insane CPU use

[mkoniecz (matkoniecz)]

capture of top output, such CPU use seems suspicious