intel_iommu=on causes iwlwifi to fail

[Adrian]

Enabling IOMMU (intel_iommu=on) parameter, I lose my WIFI card:

[ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-4.8.0-22-generic root=/dev/mapper/ubuntu--vg-root ro radeon.dpm=1 intel_iommu=on
[ 0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz-4.8.0-22-generic root=/dev/mapper/ubuntu--vg-root ro radeon.dpm=1 intel_iommu=on
[ 14.493516] iommu: Adding device 0000:00:00.0 to group 0
[ 14.493530] iommu: Adding device 0000:00:01.0 to group 1
[ 14.493539] iommu: Adding device 0000:00:14.0 to group 2
[ 14.493552] iommu: Adding device 0000:00:16.0 to group 3
[ 14.493561] iommu: Adding device 0000:00:16.3 to group 3
[ 14.493571] iommu: Adding device 0000:00:19.0 to group 4
[ 14.493579] iommu: Adding device 0000:00:1a.0 to group 5
[ 14.493587] iommu: Adding device 0000:00:1b.0 to group 6
[ 14.493596] iommu: Adding device 0000:00:1c.0 to group 7
[ 14.493605] iommu: Adding device 0000:00:1c.6 to group 8
[ 14.493614] iommu: Adding device 0000:00:1d.0 to group 9
[ 14.493630] iommu: Adding device 0000:00:1f.0 to group 10
[ 14.493638] iommu: Adding device 0000:00:1f.2 to group 10
[ 14.493647] iommu: Adding device 0000:00:1f.3 to group 10
[ 14.493653] iommu: Adding device 0000:01:00.0 to group 1
[ 14.493659] iommu: Adding device 0000:01:00.1 to group 1
[ 14.493667] iommu: Adding device 0000:3b:00.0 to group 11
[ 14.493677] iommu: Adding device 0000:3c:01.0 to group 12
[ 14.493687] iommu: Adding device 0000:3c:02.0 to group 13
[ 14.493695] iommu: Adding device 0000:3c:03.0 to group 14
[ 14.493710] iommu: Adding device 0000:3d:00.0 to group 15
[ 14.493725] iommu: Adding device 0000:5f:00.0 to group 16
[ 24.379876] iwlwifi 0000:3d:00.0: enabling device (0000 -> 0002)
[ 24.394961] iwlwifi 0000:3d:00.0: loaded firmware version 17.352738.0 op_mode iwlmvm
[ 24.435195] iwlwifi 0000:3d:00.0: Detected Intel(R) Dual Band Wireless AC 7260, REV=0x144
[ 24.437388] iwlwifi 0000:3d:00.0: L1 Enabled - LTR Enabled
[ 24.437841] iwlwifi 0000:3d:00.0: L1 Enabled - LTR Enabled
[ 29.454188] iwlwifi 0000:3d:00.0: Failed to load firmware chunk!
[ 29.455194] iwlwifi 0000:3d:00.0: Could not load the [0] uCode section
[ 29.456109] iwlwifi 0000:3d:00.0: Failed to start INIT ucode: -110
[ 29.462726] iwlwifi 0000:3d:00.0: Failed to run INIT ucode: -110
[ 29.463852] iwlwifi 0000:3d:00.0: L1 Enabled - LTR Enabled

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: linux-image-4.8.0-22-generic 4.8.0-22.24
ProcVersionSignature: Ubuntu 4.8.0-22.24-generic 4.8.0
Uname: Linux 4.8.0-22-generic x86_64
NonfreeKernelModules: openafs
ApportVersion: 2.20.3-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/pcmC0D0p: afiergol 2914 F...m pulseaudio
 /dev/snd/controlC0: afiergol 2914 F.... pulseaudio
 /dev/snd/controlC1: afiergol 2914 F.... pulseaudio
CurrentDesktop: Unity
Date: Mon Oct 17 13:48:01 2016
HibernationDevice: RESUME=UUID=7ca97ca1-ca2d-43f6-9b4c-cd61421c0831
InstallationDate: Installed on 2015-04-02 (563 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
IwConfig:
 eth0 no wireless extensions.

 lo no wireless extensions.
MachineType: Hewlett-Packard HP ZBook 15 G2
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.8.0-22-generic root=/dev/mapper/ubuntu--vg-root ro radeon.dpm=1 intel_iommu=on
RelatedPackageVersions:
 linux-restricted-modules-4.8.0-22-generic N/A
 linux-backports-modules-4.8.0-22-generic N/A
 linux-firmware 1.161
RfKill:
 0: hci0: Bluetooth
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
UpgradeStatus: Upgraded to yakkety on 2016-10-16 (0 days ago)
dmi.bios.date: 04/25/2016
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: M70 Ver. 01.15
dmi.board.name: 2253
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 03.12
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvrM70Ver.01.15:bd04/25/2016:svnHewlett-Packard:pnHPZBook15G2:pvrA3008CD10003:rvnHewlett-Packard:rn2253:rvrKBCVersion03.12:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP ZBook 15 G2
dmi.product.version: A3008CD10003
dmi.sys.vendor: Hewlett-Packard

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.9 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/v4.9-rc1/

[Adrian (adrianf0)]

The issue was happening before update/upgrade.

I have tested the referred kernel -> it doesn't get to GNOME and many network services crashes before (eventually it seems to wait for the Network Manager service forever).

[Adrian (adrianf0)]

It also affects linux-image-4.8.0-30-generic

[Adrian (adrianf0)]

It hasn't been fixed in Ubuntu 17.10 (4.13.0-16-lowlatency).

[Adrian (adrianf0)]

I am enclosing the log.

[Kai-Heng Feng (kaihengfeng)]

Please file an upstream bug at https://bugzilla.kernel.org.
Product: Drivers
Component: network-wireless

[Adrian (adrianf0)]

It looks like this bug has been already fixed in upstream
https://bugzilla.kernel.org/show_bug.cgi?id=197063

I am trying to identify a patch.