[MS-7C02, ATI R6xx HDMI, Digital Out, HDMI] No sound at all

[Maria]

AMD® Ryzen 5 2400g with radeon vega graphics × 8
AMD® Raven
GNOME 3.28.2

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.2 LTS
Release: 18.04
Codename: bionic

ALSA information is located at http://alsa-project.org/db/?f=b100eba8f9d64a684998a23ec864a7449ff2615c

After trying every solution and tutorials and reinstalling Ubuntu, I still have not been able to fix the audio issue.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.18.0-20.21~18.04.1-generic 4.18.20
Uname: Linux 4.18.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: inanna 1578 F.... pulseaudio
 /dev/snd/pcmC1D0c: inanna 1578 F...m pulseaudio
 /dev/snd/controlC0: inanna 1578 F.... pulseaudio
 /dev/snd/pcmC0D3p: inanna 1578 F...m pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Mon May 27 19:24:29 2019
InstallationDate: Installed on 2019-05-27 (0 days ago)
InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Generic failed
Symptom_Card: HD-Audio Generic - HD-Audio Generic
Symptom_Jack: Digital Out, HDMI
Symptom_Type: No sound at all
Title: [MS-7C02, ATI R6xx HDMI, Digital Out, HDMI] No sound at all
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/19/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1.40
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: B450 TOMAHAWK (MS-7C02)
dmi.board.vendor: Micro-Star International Co., Ltd
dmi.board.version: 1.0
dmi.chassis.asset.tag: To be filled by O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Micro-Star International Co., Ltd
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.40:bd12/19/2018:svnMicro-StarInternationalCo.,Ltd:pnMS-7C02:pvr1.0:rvnMicro-StarInternationalCo.,Ltd:rnB450TOMAHAWK(MS-7C02):rvr1.0:cvnMicro-StarInternationalCo.,Ltd:ct3:cvr1.0:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: MS-7C02
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: 1.0
dmi.sys.vendor: Micro-Star International Co., Ltd