No audio on headphone ubuntu 16.04

[ed20900]

I upgraded from Ubuntu 14.04 LTS to Ubuntu 16.04 and I lost audio on the headphone jack. Speakers work fine though.
I installed pavucontrol and that program has a sound level bar which moves while playing sound with the headphones plugged in. So, PulseAudio effectively detects sound. In addition to the files attached by the ubuntu-bug program I have attached the output of alsa-info.sh.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: pulseaudio 1:8.0-0ubuntu3.2
ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
Uname: Linux 4.4.0-64-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: antonio 2172 F.... pulseaudio
 /dev/snd/controlC1: antonio 2172 F.... pulseaudio
CurrentDesktop: Unity
Date: Sun Mar 5 21:39:08 2017
InstallationDate: Installed on 2012-07-22 (1687 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
SourcePackage: pulseaudio
UpgradeStatus: Upgraded to xenial on 2017-03-01 (4 days ago)
dmi.bios.date: 10/23/2007
dmi.bios.vendor: TOSHIBA
dmi.bios.version: V1.90
dmi.board.name: ISRAA
dmi.board.vendor: TOSHIBA
dmi.board.version: 1.00
dmi.chassis.asset.tag: *
dmi.chassis.type: 10
dmi.chassis.vendor: TOSHIBA
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnTOSHIBA:bvrV1.90:bd10/23/2007:svnTOSHIBA:pnSatelliteProP200:pvrPSPB7E-00Q00HCE:rvnTOSHIBA:rnISRAA:rvr1.00:cvnTOSHIBA:ct10:cvrN/A:
dmi.product.name: Satellite Pro P200
dmi.product.version: PSPB7E-00Q00HCE
dmi.sys.vendor: TOSHIBA