Public bug reported:

I have a problem similar to the bug #1599476, my system freezes when I
unplug my thunderbolt port if it is connected during startup.

What I have tested so far : 
* If the thunderbolt is plugged at startup and I unplug it -> System freeze
* If the thunderbolt is not plugged at startup, I can plug it and unplug it 
fine. 

What I expect to happen : 
Being able to unplug my thunderbolt without the system freezing. 

I updated my BIOS and the firmware of the dock : 
13:47 troche@serenity ~ % sudo dmidecode -s bios-version && sudo dmidecode -s 
bios-release-date
1.2.19
12/22/2016

This was working fine in Ubuntu 16.04, and it is not working since my update to 
Ubuntu 16.10.
13:47 troche@serenity ~ % lsb_release -rd
Description:    Ubuntu 16.10
Release:        16.10

My computer is a Dell Precision 5510 laptop with a dock WD15
Thunderbolt.

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: linux-image-4.8.0-41-generic 4.8.0-41.44
ProcVersionSignature: Ubuntu 4.8.0-41.44-generic 4.8.17
Uname: Linux 4.8.0-41-generic x86_64
ApportVersion: 2.20.3-0ubuntu8.2
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/pcmC0D0p:   troche     2945 F...m pulseaudio
 /dev/snd/controlC0:  troche     2945 F.... pulseaudio
CurrentDesktop: Unity
Date: Thu Mar 30 13:41:26 2017
HibernationDevice: RESUME=UUID=65e0fb0a-8046-4428-bb89-53d36638d70a
InstallationDate: Installed on 2016-08-24 (218 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
MachineType: Dell Inc. Precision 5510
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-41-generic 
root=UUID=7510dd66-3e56-446f-b39c-71724a228d07 ro quiet splash
RelatedPackageVersions:
 linux-restricted-modules-4.8.0-41-generic N/A
 linux-backports-modules-4.8.0-41-generic  N/A
 linux-firmware                            1.161.1
SourcePackage: linux
UpgradeStatus: Upgraded to yakkety on 2017-03-27 (3 days ago)
dmi.bios.date: 12/22/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.2.19
dmi.board.name: 0N8J4R
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: 
dmi:bvnDellInc.:bvr1.2.19:bd12/22/2016:svnDellInc.:pnPrecision5510:pvr:rvnDellInc.:rn0N8J4R:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Precision 5510
dmi.sys.vendor: Dell Inc.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug third-party-packages yakkety

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https://bugs.launchpad.net/bugs/1677575

Title:
  Thunderbolt hotplug causes system hang

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