I can't hear any sound. I've just installed the latest LTS Ubuntu version

[Enzo Ferrari]

I'm a new Ubuntu user. I need to debug my sound problems. Already tried some of the codes suggested by other users, but don't get the way to solve it. I'll be grateful if anyone can help me

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: pulseaudio 1:13.99.1-1ubuntu3.12 [modified: usr/share/pulseaudio/alsa-mixer/paths/analog-output-speaker.conf]
ProcVersionSignature: Ubuntu 5.11.0-40.44~20.04.2-generic 5.11.22
Uname: Linux 5.11.0-40-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D2', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D2p', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D7c', '/dev/snd/pcmC0D6c', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu Nov 11 14:17:43 2021
InstallationDate: Installed on 2021-11-09 (2 days ago)
InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
SourcePackage: pulseaudio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/07/2021
dmi.bios.release: 1.34
dmi.bios.vendor: HUAWEI
dmi.bios.version: 1.34
dmi.board.asset.tag: NULL
dmi.board.name: NBLB-WAX9N-PCB-B2
dmi.board.vendor: HUAWEI
dmi.board.version: M1010
dmi.chassis.asset.tag: NULL
dmi.chassis.type: 10
dmi.chassis.vendor: HUAWEI
dmi.chassis.version: M1010
dmi.ec.firmware.release: 1.34
dmi.modalias: dmi:bvnHUAWEI:bvr1.34:bd06/07/2021:br1.34:efr1.34:svnHUAWEI:pnNBLB-WAX9N:pvrM1010:skuC331:rvnHUAWEI:rnNBLB-WAX9N-PCB-B2:rvrM1010:cvnHUAWEI:ct10:cvrM1010:
dmi.product.family: MateBook D
dmi.product.name: NBLB-WAX9N
dmi.product.sku: C331
dmi.product.version: M1010
dmi.sys.vendor: HUAWEI

[Chris Guiver (guiverc)]

Thank you for taking the time to report this bug and helping to make Ubuntu better.

Bug reporting is mostly about finding & fixing problems thus preventing future users from hitting the same bug.

I suspect a Support site would be more appropriate, eg. https://answers.launchpad.net/ubuntu. You can also find help with your problem in the support forum of your local Ubuntu community http://loco.ubuntu.com/ or asking at https://askubuntu.com or https://ubuntuforums.org, or for more support options please look at https://discourse.ubuntu.com/t/community-support/709

(this bug report can be changed into a support request (question), but currently it's filed as a bug report)