Public bug reported:

After upgrading to linux-image-4.8.0-37-generic, bootup suddenly takes
much longer than with previous kernels (minutes vs 14 seconds or so),
usually the mouse (built in trackpad) doesn't do anything and cursor
pointer isn't there, and wifi doesn't work either.  On one occasion,
both of those worked and everything worked correctly.  One other
instance had just the mouse/cursor, but no wifi.  All other times,
neither of the two were present.

Booting up the previous kernel (4.8.0-34.36) makes everything work
properly.

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: linux-image-4.8.0-37-generic 4.8.0-37.39
ProcVersionSignature: Ubuntu 4.8.0-34.36-generic 4.8.11
Uname: Linux 4.8.0-34-generic x86_64
ApportVersion: 2.20.3-0ubuntu8.2
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  philb      2775 F.... pulseaudio
 /dev/snd/pcmC1D0p:   philb      2775 F...m pulseaudio
 /dev/snd/controlC1:  philb      2775 F.... pulseaudio
CurrentDesktop: Unity
Date: Fri Feb  3 16:19:22 2017
HibernationDevice: RESUME=UUID=b4ef2eb3-4df9-46c8-84ff-0401a111b715
InstallationDate: Installed on 2015-07-06 (578 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
MachineType: Dell Inc. Latitude E7450
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-34-generic 
root=UUID=222170f0-c6c8-4417-adbb-2ce31a617aac ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.8.0-34-generic N/A
 linux-backports-modules-4.8.0-34-generic  N/A
 linux-firmware                            1.161.1
SourcePackage: linux
UpgradeStatus: Upgraded to yakkety on 2016-10-16 (110 days ago)
dmi.bios.date: 05/17/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A13
dmi.board.name: 06HN6G
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: 
dmi:bvnDellInc.:bvrA13:bd05/17/2016:svnDellInc.:pnLatitudeE7450:pvr:rvnDellInc.:rn06HN6G:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E7450
dmi.sys.vendor: Dell Inc.

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


** Tags: amd64 apport-bug yakkety

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https://bugs.launchpad.net/bugs/1661782

Title:
  No mouse and/or wifi with latest kernel

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