[Blade, Intel Kabylake HDMI, Digital Out, HDMI] No sound at all

[DantePasquale]

Video works fine, but no audio via HDMI - devices show up properly in 'aplay -l' but do not show up at all in pavucontrol or under the normal audio devices. Testing with wav files to the devices yields no audio either. Headphones and all other audio (including bluetooth) work fine.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.10.0-42.46~16.04.1-generic 4.10.17
Uname: Linux 4.10.0-42-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.14
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/pcmC0D0p: dante 1903 F...m pulseaudio
 /dev/snd/controlC0: dante 1903 F.... pulseaudio
CurrentDesktop: Unity
Date: Fri Dec 29 15:22:02 2017
EcryptfsInUse: Yes
InstallationDate: Installed on 2017-05-01 (241 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH successful
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_DevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: dante 1903 F.... pulseaudio
Symptom_Jack: Digital Out, HDMI
Symptom_PulsePlaybackTest: PulseAudio playback test successful
Symptom_Type: No sound at all
Title: [Blade, Intel Kabylake HDMI, Digital Out, HDMI] No sound at all
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/10/2017
dmi.bios.vendor: Razer
dmi.bios.version: 1.00
dmi.board.name: Razer
dmi.board.vendor: Razer
dmi.chassis.type: 9
dmi.chassis.vendor: Razer
dmi.modalias: dmi:bvnRazer:bvr1.00:bd01/10/2017:svnRazer:pnBlade:pvr6.06:rvnRazer:rnRazer:rvr:cvnRazer:ct9:cvr:
dmi.product.name: Blade
dmi.product.version: 6.06
dmi.sys.vendor: Razer