pas de son

je n'ai pas de son qui sort de l'ordinateur, pas de sortie audio ni d'applications pour le son avec Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCU

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: pulseaudio 1:11.1-1ubuntu7.4
ProcVersionSignature: Ubuntu 5.3.0-45.37~18.04.1-generic 5.3.18
Uname: Linux 5.3.0-45-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.14
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC1', '/dev/snd/pcmC1D1p', '/dev/snd/pcmC1D0c', '/dev/snd/pcmC1D0p', '/dev/snd/controlC0', '/dev/snd/pcmC0D2p', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CurrentDesktop: ubuntu:GNOME
Date: Sat Apr 4 17:25:31 2020
InstallationDate: Installed on 2020-04-04 (0 days ago)
InstallationMedia: Ubuntu 18.04.4 LTS "Bionic Beaver" - Release amd64 (20200203.1)
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
SourcePackage: pulseaudio
Symptom: audio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/08/2018
dmi.bios.version: HQ-BI-14.1-Y116CR600-CC34I-014-D
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: Cherry Trail CR
dmi.board.vendor: AMI Corporation
dmi.board.version: To be filled by O.E.M.
dmi.chassis.asset.tag: To be filled by O.E.M.
dmi.chassis.type: 10
dmi.chassis.version: To be filled by O.E.M.
dmi.modalias: dmi:bvn:bvrHQ-BI-14.1-Y116CR600-CC34I-014-D:bd01/08/2018:svnSCHNEIDER:pnSCL141CTP:pvrTobefilledbyO.E.M.:rvnAMICorporation:rnCherryTrailCR:rvrTobefilledbyO.E.M.:cvn:ct10:cvrTobefilledbyO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: SCL141CTP
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: SCHNEIDER