The kworker processes are generic in that they can do work for many kernel
parts,
so a particular kworker/number unfortunately doesn't help much to understand the
actual thing that the kworker was doing; we'll need the stack traces for that.
:)
Yes, if and once the issue starts happening again, please collect the stack
traces with the previous commands, and upload the tarball to this bug.
I'll mark the bug as Incomplete, and it should automatically expire in 60 days
iirc if there's no further activity (i.e., problem really vanished/no uploads.)
Thanks,
Mauricio
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1896519
Title:
kworker consumes 80% of CPU
Status in linux package in Ubuntu:
Incomplete
Bug description:
Like yesterday I have noticed my CPU on Leonovo Thinkpad T590 laptop
has starting to be consumed by kworker for 80% of 2-CPU 4-core
processor.
I also see fan works like crazy and "ejects" hot air non stop. This
has never happened in my 6 months of having this new laptop.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-47-generic 5.4.0-47.51
ProcVersionSignature: Ubuntu 5.4.0-47.51-generic 5.4.55
Uname: Linux 5.4.0-47-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.8
Architecture: amd64
CasperMD5CheckResult: skip
Date: Mon Sep 21 19:29:32 2020
InstallationDate: Installed on 2019-10-23 (334 days ago)
InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64
(20190805)
MachineType: LENOVO 20N4S06V00
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-47-generic
root=UUID=5ae35a7d-8195-4867-8bb5-49ab3106da83 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-5.4.0-47-generic N/A
linux-backports-modules-5.4.0-47-generic N/A
linux-firmware 1.187.3
SourcePackage: linux
UpgradeStatus: Upgraded to focal on 2020-08-14 (38 days ago)
dmi.bios.date: 08/12/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: N2IET91W (1.69 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20N4S06V00
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrN2IET91W(1.69):bd08/12/2020:svnLENOVO:pn20N4S06V00:pvrThinkPadT590:rvnLENOVO:rn20N4S06V00:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad T590
dmi.product.name: 20N4S06V00
dmi.product.sku: LENOVO_MT_20N4_BU_Think_FM_ThinkPad T590
dmi.product.version: ThinkPad T590
dmi.sys.vendor: LENOVO
modified.conffile..etc.default.apport:
# set this to 0 to disable apport, or to 1 to enable it
# you can temporarily override this with
# sudo service apport start force_start=1
enabled=0
mtime.conffile..etc.default.apport: 2020-04-29T17:08:03.553351
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