Computer freezes after kernel upgrade

[Lavi Kumar]

I am facing freeze problem after the update.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-43-generic 4.4.0-43.63
ProcVersionSignature: Ubuntu 4.4.0-43.63-generic 4.4.21
Uname: Linux 4.4.0-43-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: lavi 1654 F.... pulseaudio
 /dev/snd/controlC0: lavi 1654 F.... pulseaudio
CurrentDesktop: Unity
Date: Tue Oct 18 10:29:37 2016
HibernationDevice: RESUME=UUID=48a301a4-e1af-450f-82c4-55f5219698ee
InstallationDate: Installed on 2016-09-29 (19 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
IwConfig:
 lo no wireless extensions.

 enp0s31f6 no wireless extensions.
MachineType: Dell Inc. Precision Tower 3620
ProcFB: 0 nouveaufb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-43-generic.efi.signed root=UUID=d4cd7518-1f06-4517-bc42-4bc945967e70 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-43-generic N/A
 linux-backports-modules-4.4.0-43-generic N/A
 linux-firmware 1.157.4
RfKill:

SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/26/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.3.6
dmi.board.name: 09WH54
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 6
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.3.6:bd05/26/2016:svnDellInc.:pnPrecisionTower3620:pvr:rvnDellInc.:rn09WH54:rvrA00:cvnDellInc.:ct6:cvr:
dmi.product.name: Precision Tower 3620
dmi.sys.vendor: Dell Inc.

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