Public bug reported:

To generate the crash:
1) Suspend the system (e.g. choose suspend from the top menu).
2) At any point, unplug the cord (the bug happens if I unplug at any point 
after suspend, even if I then replug before I resume)
3) Try to resume (pressing power button). Computer reboots.

What should happen: Regular resume from suspend. 
 
(If I leave the computer plugged in, resume works fine.)

I have performed the tests at
https://wiki.ubuntu.com/DebuggingKernelSuspend and included the results.
Note that the computer never crashes during any of the tests except when
/sys/power/pm_test is 'none'.

This appears the same/similar to #bug #1645758 but I dont't know how to
add to the apport info to that bug instead of filing my own.

ProblemType: KernelOops
DistroRelease: Ubuntu 16.10
Package: linux-image-4.8.0-37-generic 4.8.0-37.39
ProcVersionSignature: Ubuntu 4.8.0-37.39-generic 4.8.16
Uname: Linux 4.8.0-37-generic x86_64
Annotation: This occurred during a previous suspend, and prevented the system 
from resuming properly.
ApportVersion: 2.20.3-0ubuntu8.2
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  ganc       2892 F.... pulseaudio
Date: Thu Dec 22 07:09:27 2016
DuplicateSignature: suspend/resume:Dell Inc. Latitude E5470:1.11.4
ExecutablePath: /usr/share/apport/apportcheckresume
Failure: suspend/resume
HibernationDevice: RESUME=UUID=a7e5c256-744c-41e6-823b-befb5f5c63f6
InstallationDate: Installed on 2017-01-31 (-39 days ago)
InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
InterpreterPath: /usr/bin/python3.5
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 002: ID 8087:0a2b Intel Corp. 
 Bus 001 Device 004: ID 0bda:5686 Realtek Semiconductor Corp. 
 Bus 001 Device 003: ID 0a5c:5832 Broadcom Corp. 
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. Latitude E5470
ProcCmdline: /usr/bin/python3 /usr/share/apport/apportcheckresume
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-37-generic.efi.signed 
root=UUID=1eb743a3-00e0-430e-be35-9748390e53f3 ro quiet splash vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No 
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-4.8.0-37-generic N/A
 linux-backports-modules-4.8.0-37-generic  N/A
 linux-firmware                            1.161.1
SourcePackage: linux
Title: [Dell Inc. Latitude E5470] suspend/resume failure
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
 
dmi.bios.date: 12/22/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.11.4
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: 
dmi:bvnDellInc.:bvr1.11.4:bd12/22/2016:svnDellInc.:pnLatitudeE5470:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E5470
dmi.sys.vendor: Dell Inc.

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


** Tags: amd64 apport-kerneloops need-duplicate-check resume suspend yakkety

** Attachment added: "generate.tar.gz"
   
https://bugs.launchpad.net/bugs/1661741/+attachment/4812747/+files/generate.tar.gz

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https://bugs.launchpad.net/bugs/1661741

Title:
  [Dell Inc. Latitude E5470] suspend/resume failure

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