PCI/internal sound card not detected

[Helena Morais]

Suddenly microphone not detected anymore. On sound settings there is no listed input device. It was working before.

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 bionic/main amd64 Packages
        500 http://br.archive.ubuntu.com/ubuntu bionic/main i386 Packages
        100 /var/lib/dpkg/status

inxi -SMA
System: Host: Latitude-3410 Kernel: 5.4.0-56-generic x86_64
           bits: 64
           Desktop: Gnome 3.28.4 Distro: Ubuntu 18.04.5 LTS
Machine: Device: laptop System: Dell product: Latitude 3410 serial: N/A
           Mobo: Dell model: 0JYV3W v: A00 serial: N/A
           UEFI: Dell v: 1.4.1 date: 08/26/2020
Audio: Card Intel Device 02c8 driver: snd_hda_intel
           Sound: Advanced Linux Sound Architecture v: k5.4.0-56-generic

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 5.4.0-56.62~18.04.1-generic 5.4.73
Uname: Linux 5.4.0-56-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.20
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: helena 1506 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Fri Dec 4 15:44:35 2020
DistributionChannelDescriptor:
 # This is the distribution channel descriptor for the OEM CDs
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-bionic-amd64-20190418-59+beaver-osp1+X00
InstallationDate: Installed on 2020-09-21 (74 days ago)
InstallationMedia: Ubuntu 18.04 "Bionic" - Build amd64 LIVE Binary 20190418-12:10
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Title: PCI/internal sound card not detected
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/26/2020
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.4.1
dmi.board.name: 0JYV3W
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.4.1:bd08/26/2020:svnDellInc.:pnLatitude3410:pvr:rvnDellInc.:rn0JYV3W:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: Latitude
dmi.product.name: Latitude 3410
dmi.product.sku: 09EC
dmi.sys.vendor: Dell Inc.