Public bug reported:
Hi all,
I recently updated my home server to Ubuntu 22.04, and since then my
WiFi access point (ath9k driver) fails after an hour or so.
I saw with htop that one of my CPU core is at 100% of the kernel.
With perf top I could find it's spending time in the ath9k driver, in
ioread32, see the attachment.
Looks like an infinite loop or so. It worked very well before the
upgrade.
Any idea?
Thanks,
Tom
ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-image-5.15.0-33-generic 5.15.0-33.34
ProcVersionSignature: Ubuntu 5.15.0-33.34-generic 5.15.30
Uname: Linux 5.15.0-33-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: gdm 3274 F.... pulseaudio
/dev/snd/controlC1: gdm 3274 F.... pulseaudio
CasperMD5CheckResult: unknown
Date: Wed Jun 1 10:35:42 2022
InstallationDate: Installed on 2020-08-25 (644 days ago)
InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
MachineType: ASUSTeK COMPUTER INC. N550JV
ProcEnviron:
LANG=fr_BE.UTF-8
LANGUAGE=fr_BE:fr
PATH=(custom, no user)
TERM=screen-256color
SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-33-generic
root=/dev/mapper/lvgroup-system ro quiet splash vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-5.15.0-33-generic N/A
linux-backports-modules-5.15.0-33-generic N/A
linux-firmware 20220329.git681281e4-0ubuntu3.2
SourcePackage: linux
UpgradeStatus: Upgraded to jammy on 2022-05-19 (12 days ago)
dmi.bios.date: 11/19/2013
dmi.bios.release: 4.6
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: N550JV.208
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: N550JV
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.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrN550JV.208:bd11/19/2013:br4.6:svnASUSTeKCOMPUTERINC.:pnN550JV:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnN550JV:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:skuASUS-NotebookSKU:
dmi.product.family: N
dmi.product.name: N550JV
dmi.product.sku: ASUS-NotebookSKU
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug jammy
** Attachment added: "Capture d’écran 2022-06-01 104143.png"
https://bugs.launchpad.net/bugs/1976481/+attachment/5594244/+files/Capture%20d%E2%80%99%C3%A9cran%202022-06-01%20104143.png
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https://bugs.launchpad.net/bugs/1976481
Title:
ath9k driver takes 100% of CPU since update to 22.04
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