Dell i5779 - Sound only comes out of subwoofer. Speaker sound tests do not produce any sound for any speaker

Kubuntu 16.04 amd64
Dell i7559

* Skylake PCIe controller
* Audio device: Intel Corporation Sunrise Point-H HD Audio (rev 31)
* aplay --list-devices
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC3246 Analog [ALC3246 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 8: HDMI 2 [HDMI 2]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16
Uname: Linux 4.4.0-36-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/pcmC0D0c: htmler 1526 F...m pulseaudio
 /dev/snd/controlC0: htmler 1526 F.... pulseaudio
CurrentDesktop: X-Cinnamon
Date: Thu Sep 15 13:25:49 2016
InstallationDate: Installed on 2016-09-12 (3 days ago)
InstallationMedia: Kubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AudioUsers: pulse
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_DevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/pcmC0D0c: htmler 1526 F...m pulseaudio
 /dev/snd/controlC0: htmler 1526 F.... pulseaudio
Symptom_Jack: Digital Out, HDMI
Symptom_Type: Sound works for some users but not for others
Title: [HDA-Intel - HDA Intel PCH, playback] sound not working for all users
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/17/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.1.8
dmi.board.name: 0H87XC
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias: dmi:bvnDellInc.:bvr1.1.8:bd04/17/2016:svnDellInc.:pnInspiron7559:pvr1.1.8:rvnDellInc.:rn0H87XC:rvrA00:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.name: Inspiron 7559
dmi.product.version: 1.1.8
dmi.sys.vendor: Dell Inc.
mtime.conffile..etc.modprobe.d.alsa-base.conf: 2016-09-14T20:51:48.758875