[OptiPlex 3046, Intel Skylake HDMI, Digital Out, HDMI] No sound at all

[Maulik]

No Sound.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.4.0-58.79-generic 4.4.35
Uname: Linux 4.4.0-58-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/pcmC0D0p: maulik 2757 F...m pulseaudio
 /dev/snd/controlC0: maulik 2757 F.... pulseaudio
CurrentDesktop: Unity
Date: Thu Dec 29 17:20:54 2016
DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-trusty-amd64-osp1-20150720-0
InstallationDate: Installed on 2016-11-29 (29 days ago)
InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 20150720-04:06
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: maulik 2757 F...m pulseaudio
 /dev/snd/controlC0: maulik 2757 F.... pulseaudio
Symptom_Jack: Digital Out, HDMI
Symptom_Type: No sound at all
Title: [OptiPlex 3046, Intel Skylake HDMI, Digital Out, HDMI] No sound at all
UpgradeStatus: Upgraded to xenial on 2016-12-21 (8 days ago)
dmi.bios.date: 08/30/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.1.2
dmi.board.name: 0GCXFM
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 3
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.1.2:bd08/30/2016:svnDellInc.:pnOptiPlex3046:pvr:rvnDellInc.:rn0GCXFM:rvrA00:cvnDellInc.:ct3:cvr:
dmi.product.name: OptiPlex 3046
dmi.sys.vendor: Dell Inc.