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Message #21933
[Bug 1213917] Re: kworker thread 99.8 - 100% CPU after 1st suspend - no second suspend
The bisect indicated this as the first bad commit:
commit bc2bebe8de8ed4ba6482c9cc370b0dd72ffe8cd2
Author: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
Date: Wed Jul 3 21:48:11 2013 +0200
alx: remove WoL support
I built a kernel with this commit reverted. Can you test the kernel and post back if it resolves this bug? It can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1213917
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https://bugs.launchpad.net/bugs/1213917
Title:
kworker thread 99.8 - 100% CPU after 1st suspend - no second suspend
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
After updating today (hadn't updated for a while), my fan won't stop
and top is showing:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
4 root 20 0 0 0 0 R 100,2 0,0 36:42.35 kworker/0:0
Edit: seems related to bug 1214071. I can reproduce with:
1) Start with a fresh reboot
2) suspend and resume
At this point after the successful resume, kworker thread starts
consuming 100% cpu and I can no longer suspend (bug 1214071).
ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: linux-image-3.11.0-2-generic 3.11.0-2.5
ProcVersionSignature: Ubuntu 3.11.0-2.5-generic 3.11.0-rc5
Uname: Linux 3.11.0-2-generic x86_64
ApportVersion: 2.12-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: michael 2372 F.... pulseaudio
Date: Mon Aug 19 14:39:57 2013
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=1efd421f-ac68-455b-b4d4-8912fa02494d
MachineType: ASUSTeK COMPUTER INC. X201EP
MarkForUpload: True
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-2-generic.efi.signed root=UUID=05643352-201b-43e8-976a-c1d40d591e80 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.11.0-2-generic N/A
linux-backports-modules-3.11.0-2-generic N/A
linux-firmware 1.113
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/04/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: X201EP.209
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: X201EP
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.:bvrX201EP.209:bd02/04/2013:svnASUSTeKCOMPUTERINC.:pnX201EP:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX201EP:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: X201EP
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
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