Public bug reported:
When viewing videos sometimes the kernel thread
kworker/u32:2+events_unbound starts to consume 100% CPU while the screen
response (including mouse) drops to less than 1 image per second. I
managed to crash the kernel and capture the core image of that crash
while the kernel was in this state (see debugging the kernel crashes)
but I am not sure what to do next to investigate this problem. I think
it should be possible to interrogate that dump somehow to see what
exactly was the kernel thread doing but I don't know how.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.8.0-53-generic 6.8.0-53.55
ProcVersionSignature: Ubuntu 6.8.0-53.55-generic 6.8.12
Uname: Linux 6.8.0-53-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/seq: jozef 2671 F.... pipewire
/dev/snd/controlC1: jozef 2675 F.... wireplumber
/dev/snd/controlC0: jozef 2675 F.... wireplumber
/dev/snd/controlC2: jozef 2675 F.... wireplumber
CRDA: N/A
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sat Feb 22 17:27:31 2025
InstallationDate: Installed on 2024-02-14 (374 days ago)
InstallationMedia: Ubuntu 22.04.3 LTS "Jammy Jellyfish" - Release amd64
(20230807.2)
MachineType: ASUSTeK COMPUTER INC. ASUS TUF Gaming A15 FA507NU_FA507NU
ProcEnviron:
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-53-generic
root=UUID=ac7c0a1e-2f8d-465c-9ec4-f8861895ec66 ro quiet splash
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-6.8.0-53-generic N/A
linux-backports-modules-6.8.0-53-generic N/A
linux-firmware 20240318.git3b128b60-0ubuntu2.9
SourcePackage: linux
UpgradeStatus: Upgraded to noble on 2025-01-30 (24 days ago)
dmi.bios.date: 03/15/2023
dmi.bios.release: 5.24
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: FA507NU.306
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: FA507NU
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.ec.firmware.release: 3.6
dmi.modalias:
dmi:bvnAmericanMegatrendsInternational,LLC.:bvrFA507NU.306:bd03/15/2023:br5.24:efr3.6:svnASUSTeKCOMPUTERINC.:pnASUSTUFGamingA15FA507NU_FA507NU:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnFA507NU:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:sku:
dmi.product.family: ASUS TUF Gaming A15
dmi.product.name: ASUS TUF Gaming A15 FA507NU_FA507NU
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble wayland-session
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https://bugs.launchpad.net/bugs/2099748
Title:
kworker/u32:2+events_unbound kernel thread making computer unusable
until reboot
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