Thunderbolt hotplug causes system hang

[Ryan Welton]

Hotplugging either Apple's USB-C thunderbolt -> HDMI adapter or Dell's TB15 Thunderbolt cause a system panic. This is fixed upstream in v4.6.0

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-24-generic 4.4.0-24.43
ProcVersionSignature: Ubuntu 4.4.0-24.43-generic 4.4.10
Uname: Linux 4.4.0-24-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: user 1392 F.... pulseaudio
CurrentDesktop: KDE
Date: Fri Jun 10 01:05:57 2016
HibernationDevice: RESUME=UUID=026c66d0-3ed3-4401-896d-dd517e7a343d
InstallationDate: Installed on 2016-06-09 (0 days ago)
InstallationMedia: Kubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
MachineType: Dell Inc. XPS 15 9550
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-24-generic.efi.signed root=/dev/mapper/kubuntu--vg-root ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-24-generic N/A
 linux-backports-modules-4.4.0-24-generic N/A
 linux-firmware 1.157
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/07/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 01.02.00
dmi.board.name: 0N7TVV
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr01.02.00:bd04/07/2016:svnDellInc.:pnXPS159550:pvr:rvnDellInc.:rn0N7TVV:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: XPS 15 9550
dmi.sys.vendor: Dell 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 v4.7-rc1 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/v4.7-rc3-yakkety/

[Elvis Morales Fernandez (elvismdev)]

Can someone confirm if this latest kernel v4.7-rc1 solves the problems on the Dell TB15 Thunderbolt 3 dock?

[IbeeX (ibrkanac)]

kernel 4.6.2 still same

[IbeeX (ibrkanac)]

kernel 4.7-rc6 still same don't work even worse then 4.6.3

[penalvch (penalvch)]

IbeeX, it will help immensely if you filed a new report with the Ubuntu repository kernel (not mainline/upstream) via a terminal:
ubuntu-bug linux

Please feel free to subscribe me to it.

For more on why this is helpful, please see https://wiki.ubuntu.com/ReportingBugs.

[IbeeX (ibrkanac)]

Christopher, I runnig kernel 4.6.3 since it at least parttly supports my thunderbolt dock (Dell wd15) offical kernel 4.4.0-28 wont work with it, when I try to report problem with 'ubuntu-bug linux' it won't report it for new kernel, and if I use old one then I can't boot with dock attached. Anny sugestion?

[penalvch (penalvch)]

IbeeX, manually report -> https://bugs.launchpad.net/ubuntu/+source/linux/+filebug

[IbeeX (ibrkanac)]

New bug reported https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1599476

[Launchpad Janitor (janitor)]

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