Problems with gpe06 interrupt storm on a 2016 Macbook Pro

[Cd-MaN]

I also reported this upstream (https://bugzilla.kernel.org/show_bug.cgi?id=117481), just reporting this here so that the upstream fix does not get lost in the noise:

Symptoms:

- With a freshly installed Ubuntu 16.04 (but also occurs using the live CD/USB) on a 2016 Macbook Pro (hardware version MacBookPro11,2) CPU core is 80-90% pegged with kworker:
12772 root 20 0 0 0 0 R 84,1 0,0 15:37.79 kworker/0:6

- When doing grep . -r /sys/firmware/acpi/interrupts/ I see a lot of interrupts on gpe06:
/sys/firmware/acpi/interrupts/gpe06:222309848 enabled

- Disabling gpe06 frees up the core without any noticeable side-effects:
# echo disable > /sys/firmware/acpi/interrupts/gpe06

I put the above in the root crontab with @reboot which solved the problem for me for now.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-21-generic 4.4.0-21.37 [modified: boot/vmlinuz-4.4.0-21-generic]
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: gpanther 1623 F.... pulseaudio
 /dev/snd/controlC0: gpanther 1623 F.... pulseaudio
CurrentDesktop: GNOME
Date: Tue May 3 06:19:04 2016
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=07c7cd27-bf38-466e-afd8-33e34c38dea5
InstallationDate: Installed on 2016-04-30 (2 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
MachineType: Apple Inc. MacBookPro11,2
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.4.0-21-generic.efi.signed root=UUID=839f9a24-3946-4d31-894c-df7e6b4573cb ro rootflags=subvol=@ noprompt libata.force=noncq quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-21-generic N/A
 linux-backports-modules-4.4.0-21-generic N/A
 linux-firmware 1.157
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/22/2016
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP112.88Z.0138.B17.1602221600
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.B17.1602221600:bd02/22/2016: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.

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.6 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc6-wily/

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]