[MS-7788, Realtek ALC887-VD, Green Line Out, Rear] No sound at all

I recently upgraded my system from 14.04LTS to 16.04LTS.
But now I cannot hear any sound from any player or youtube.

executing the command

aplay -l

I get the harware information like

**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC887-VD Analog [ALC887-VD Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.4.0-78.99-generic 4.4.62
Uname: Linux 4.4.0-78-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/pcmC0D0p: ronem 1986 F...m pulseaudio
 /dev/snd/controlC0: ronem 1986 F.... pulseaudio
CurrentDesktop: Unity
Date: Tue May 23 10:54:00 2017
InstallationDate: Installed on 2016-01-05 (503 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_DevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/pcmC0D0p: ronem 1986 F...m pulseaudio
 /dev/snd/controlC0: ronem 1986 F.... pulseaudio
Symptom_Jack: Green Line Out, Rear
Symptom_Type: No sound at all
Title: [MS-7788, Realtek ALC887-VD, Green Line Out, Rear] No sound at all
UpgradeStatus: Upgraded to xenial on 2017-05-22 (0 days ago)
dmi.bios.date: 01/10/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V1.9
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: H61M-P20 (G3) (MS-7788)
dmi.board.vendor: MSI
dmi.board.version: 1.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MSI
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV1.9:bd01/10/2013:svnMSI:pnMS-7788:pvr1.0:rvnMSI:rnH61M-P20(G3)(MS-7788):rvr1.0:cvnMSI:ct3:cvr1.0:
dmi.product.name: MS-7788
dmi.product.version: 1.0
dmi.sys.vendor: MSI