[GF7050VT-M, SigmaTel STAC9221 A2, Green Speaker, Rear] No sound at all

[Orlando]

No sound comes from the speakers, everything is plugged in correctly

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: pulseaudio 1:8.0-0ubuntu3
ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
Uname: Linux 4.4.0-34-generic i686
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: landamo 2807 F.... pulseaudio
CurrentDesktop: Unity
Date: Wed Aug 10 23:49:53 2016
InstallationDate: Installed on 2016-03-23 (140 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release i386 (20151021)
SourcePackage: pulseaudio
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:NVidia successful
Symptom_Card: Built-in Audio - HDA NVidia
Symptom_DevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: landamo 2807 F.... pulseaudio
Symptom_Jack: Green Speaker, Rear
Symptom_PulsePlaybackTest: PulseAudio playback test failed
Symptom_Type: No sound at all
Title: [GF7050VT-M, SigmaTel STAC9221 A2, Green Speaker, Rear] No sound at all
UpgradeStatus: Upgraded to xenial on 2016-05-25 (77 days ago)
dmi.bios.date: 07/07/2008
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 080015
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: GF7050VT-M
dmi.board.vendor: ECS
dmi.board.version: 1.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: ECS
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080015:bd07/07/2008:svnECS:pnGF7050VT-M:pvr1.0:rvnECS:rnGF7050VT-M:rvr1.0:cvnECS:ct3:cvr1.0:
dmi.product.name: GF7050VT-M
dmi.product.version: 1.0
dmi.sys.vendor: ECS