I can confirm that updating to BIOS 1.20 also fixes it for me (with SSD
drive). Strange that the problem only exhibited itself with certain
kernel versions. So it seems Joseph and myself have wasted our time
bisecting the kernel. Sorry Joseph. I learnt a lot in the process
however. I will close the bug, I presume that correct status is '
invalid'.
** Changed in: linux (Ubuntu)
Status: In Progress => Invalid
** Changed in: linux (Ubuntu Wily)
Status: In Progress => Invalid
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https://bugs.launchpad.net/bugs/1491467
Title:
kworker consuming cpu due to GPE13 interrupt storm on Fujitsu A544
Status in Linux:
Unknown
Status in linux package in Ubuntu:
Invalid
Status in linux source package in Wily:
Invalid
Bug description:
On Fujitsu A544 laptop (and likely others) fitted with SSD, kworker
takes 100% of one core of CPU due to GPE13 interrupt storm
See upstream bug https://bugzilla.kernel.org/show_bug.cgi?id=53071
The bug can be identified by repeatedly running
cat /sys/firmware/acpi/interrupts/gpe13
where a rapidly increasing count will be seen.
Workaround:
sudo sh -c 'echo "disable" > /sys/firmware/acpi/interrupts/gpe13'
disables it until reboot
Using
sudo crontab -e
and adding the line
@reboot echo "disable" > /sys/firmware/acpi/interrupts/gpe13
works around for subsequent boots.
ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: linux-image-4.1.0-3-generic 4.1.0-3.3
ProcVersionSignature: Ubuntu 4.1.0-3.3-generic 4.1.3
Uname: Linux 4.1.0-3-generic x86_64
ApportVersion: 2.18-0ubuntu9
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: colinl 1699 F.... pulseaudio
/dev/snd/controlC1: colinl 1699 F.... pulseaudio
CurrentDesktop: Unity
Date: Wed Sep 2 16:03:19 2015
InstallationDate: Installed on 2014-10-21 (316 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha amd64 (20141017)
MachineType: FUJITSU LIFEBOOK A544
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.1.0-3-generic
root=UUID=c68c6484-d8d6-44f6-b429-892aa6ef74cf ro
RelatedPackageVersions:
linux-restricted-modules-4.1.0-3-generic N/A
linux-backports-modules-4.1.0-3-generic N/A
linux-firmware 1.147
RfKill:
0: phy0: Wireless LAN
Soft blocked: yes
Hard blocked: no
SourcePackage: linux
UpgradeStatus: Upgraded to wily on 2015-08-31 (1 days ago)
dmi.bios.date: 04/01/2015
dmi.bios.vendor: FUJITSU // Phoenix Technologies Ltd.
dmi.bios.version: Version 1.19
dmi.board.name: FJNBB35
dmi.board.vendor: FUJITSU
dmi.chassis.type: 10
dmi.chassis.vendor: FUJITSU
dmi.modalias:
dmi:bvnFUJITSU//PhoenixTechnologiesLtd.:bvrVersion1.19:bd04/01/2015:svnFUJITSU:pnLIFEBOOKA544:pvr:rvnFUJITSU:rnFJNBB35:rvr:cvnFUJITSU:ct10:cvr:
dmi.product.name: LIFEBOOK A544
dmi.sys.vendor: FUJITSU
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