Public bug reported:
Hi,
Recently, I got kernel linux-generic-hwe-20.04 installed, so 5.11.0.x.
Not sure if I intended to, as I already tested when it was based on
5.8.x, but got the same issue... So, well, as many, I use Zoom client
(latest deb file downloaded from Zoom site) on the following laptop:
Manufacturer: Dell Inc.
Product Name: Latitude 7400
CPU: Intel(R) Core(TM) i7-8665U CPU @ 1.90GHz
With linux-generic-hwe-20.04 based on 5.8.x, I noticed a huge increase
of CPU used by Zoom (just looking at top), sometimes having 350% when
someones was sharing screen.
With linux-generic-hwe-20.04 based on 5.11. the CPU usage seems correct,
but the load average get doubled after a moment, and the system becomes
far less usable.
Going back to linux-kernel 5.4.0-84-generic, and performance is stable, even
without thinking about
changing the CPU governor to performance.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-generic-hwe-20.04 5.11.0.34.36~20.04.13
ProcVersionSignature: Ubuntu 5.4.0-84.94-generic 5.4.133
Uname: Linux 5.4.0-84-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.18
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu Sep 9 15:28:58 2021
InstallationDate: Installed on 2021-02-09 (211 days ago)
InstallationMedia: Ubuntu 20.04.2 LTS "Focal Fossa" - Release amd64 (20210204)
SourcePackage: linux-meta-hwe-5.11
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: linux-meta-hwe-5.11 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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https://bugs.launchpad.net/bugs/1943144
Title:
low performance when using Zoom client compared to linux-generic
5.4.0.x
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