Comment 0 for bug 1874465

in sound settings there is only dummy output, everything worked until April, 21 2020 when updated 18.04 LTS to 20.04 LTS via terminal.

Description: Ubuntu 20.04 LTS
Release: 20.04

alsa-base:
  Installed: 1.0.25+dfsg-0ubuntu5
  Candidate: 1.0.25+dfsg-0ubuntu5
  Version table:
 *** 1.0.25+dfsg-0ubuntu5 500
        500 http://br.archive.ubuntu.com/ubuntu focal/main amd64 Packages
        500 http://br.archive.ubuntu.com/ubuntu focal/main i386 Packages
        100 /var/lib/dpkg/status

pavucontrol:
  Installed: 4.0-1build1
  Candidate: 4.0-1build1
  Version table:
 *** 4.0-1build1 500
        500 http://br.archive.ubuntu.com/ubuntu focal/universe amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-26-generic 5.4.0-26.30
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: ploosh 1949 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu Apr 23 11:35:40 2020
InstallationDate: Installed on 2019-10-06 (199 days ago)
InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
MachineType: Dell Inc. Inspiron 3420
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-26-generic root=UUID=ec870298-2798-4d1b-a6d2-6118c2078d5e ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-5.4.0-26-generic N/A
 linux-backports-modules-5.4.0-26-generic N/A
 linux-firmware 1.187
SourcePackage: linux
UpgradeStatus: Upgraded to focal on 2020-04-22 (1 days ago)
dmi.bios.date: 11/04/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A11
dmi.board.name: 04XGDT
dmi.board.vendor: Dell Inc.
dmi.board.version: A11
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias: dmi:bvnDellInc.:bvrA11:bd11/04/2013:svnDellInc.:pnInspiron3420:pvrNotSpecified:rvnDellInc.:rn04XGDT:rvrA11:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.name: Inspiron 3420
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: Not Specified
dmi.sys.vendor: Dell Inc.