Kworker takes 100% CPU after installing OSX Yosemite upgrade

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Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.18-vivid/

Also, did this issue start happening in Utopic, or did it also exist in prior releases.

This is possibly a duplicate of upstream bug:
https://bugzilla.kernel.org/show_bug.cgi?id=85881

Also, it could be firmware related:

http://ubuntuforums.org/archive/index.php/t-2252811.html
https://bbs.archlinux.org/viewtopic.php?id=188669

The newest upstream kernel has the same bug. The symptoms in that upstream bug are identical (I also got this after an update to Yosemite) so this is almost certainly the same.

If anyone needs a good workaround, this worked perfectly for me on a mba 2013 running 14.04: http://carlocapocasa.com/crushing-the-kworker-uprising-or-how-to-fix-your-linux-lenovo-ideapad-y560p/

Confirming the bug.
kernel = 3.16.0-33-generic
Ubuntu 14.04.2 LTS

for me it was gpe06. Fixed using following http://sudoremember.blogspot.com/2013/05/high-cpu-usage-due-to-kworker.html

Hallo, I like to confirm also the behaviour with the gpe13 in my case.
uname -a:
LIFEBOOK-AH544 3.16.0-38-generic #52~14.04.1-Ubuntu SMP Fri May 8 09:43:57 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux, last weekend a very new installation.
Pendrive ISO:
Origin: Ubuntu
Label: Ubuntu
Suite: trusty
Version: 14.04
Codename: trusty
Date: Thu, 08 May 2014 14:19:09 UTC
Architectures: amd64 i386
Components: main restricted
Description: Ubuntu Trusty 14.04

One of the 8 threads was all the time at 80% and back from suspension it goes up to 98%.

I used also this indications to keep the CPU load (1º thread) down ...
http://sudoremember.blogspot.com.es/2013/05/high-cpu-usage-due-to-kworker.html
…. but then it was not possible to suspend the system.
The click on “suspend” or closing the Lifebook, only results in blockage of the session but without stop of the system.

ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: alex 1639 F.... pulseaudio
 /dev/snd/controlC1: alex 1639 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 16.04
HibernationDevice: RESUME=UUID=62709f46-3666-4820-ab0d-e0e93f7dc330
InstallationDate: Installed on 2016-04-17 (0 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160416)
MachineType: Apple Inc. MacBookPro11,2
NonfreeKernelModules: wl
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-18-generic.efi.signed root=UUID=b928074e-761a-4287-bb96-fc9d464aac45 ro noprompt quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 4.4.0-18.34-generic 4.4.6
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-18-generic N/A
 linux-backports-modules-4.4.0-18-generic N/A
 linux-firmware 1.157
Tags: xenial
Uname: Linux 4.4.0-18-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 06/05/2015
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP112.88Z.0138.B15.1506050548
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-3CBD00234E554E41
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookPro11,2
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-3CBD00234E554E41
dmi.modalias: dmi:bvnAppleInc.:bvrMBP112.88Z.0138.B15.1506050548:bd06/05/2015:svnAppleInc.:pnMacBookPro11,2:pvr1.0:rvnAppleInc.:rnMac-3CBD00234E554E41:rvrMacBookPro11,2:cvnAppleInc.:ct10:cvrMac-3CBD00234E554E41:
dmi.product.name: MacBookPro11,2
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.

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Just to confirm this still affects Xenial on a MacbookPro11,2

Affects Xenial on MacbookPro mid 14