PCI/internal sound card not detected "dummy output"

[Phil DuBert]

On 22 March, 2020 I ran the latest update as requested by the computer. After rebooting, as requested, I no longer have sound & the only sound output is "Dummy Output".
No sound card is detected but i have a Multimedia Audio Controller Intel Corp Device 9dc8(rev30) installed.

After running Ubuntu-bug in terminal I get:
ProblemType: Bug
DistroRelease: Ubuntu 18.04.4
Package: alsa-base 1.0.25+dfsg-Oubuntu5
Apport Version: 2.20.9-Obuntu7.12
Manufacturer: Acer
Product Name: Swift SF314-56
Product Version: V1.10

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 5.3.0-42.34~18.04.1-generic 5.3.18
Uname: Linux 5.3.0-42-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.12
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CurrentDesktop: ubuntu:GNOME
Date: Tue Mar 24 11:25:53 2020
InstallationDate: Installed on 2019-09-18 (188 days ago)
InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Title: PCI/internal sound card not detected
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/22/2019
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: V1.10
dmi.board.name: Strongbow_WL
dmi.board.vendor: WL
dmi.board.version: V1.10
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.10
dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.10:bd02/22/2019:svnAcer:pnSwiftSF314-56:pvrV1.10:rvnWL:rnStrongbow_WL:rvrV1.10:cvnAcer:ct10:cvrV1.10:
dmi.product.family: Swift 3
dmi.product.name: Swift SF314-56
dmi.product.sku: 0000000000000000
dmi.product.version: V1.10
dmi.sys.vendor: Acer

[Hui Wang (hui.wang)]

Please try 5.3.0-43 kernel.

[Phil DuBert (phil-dubert)]

Thank you Hui Wang for your help.

>Please add "options snd-hda-intel dmic_detect=0" in the
/etc/modprobe.d/alsa-base.conf, then the legacy hda driver will work as
before.

I can confirm, this solved both the sound problem as well as suspend
problem.

Peace,

Phil

On 3/24/20 6:52 PM, Hui Wang wrote:
> *** This bug is a duplicate of bug 1864061 ***
> https://bugs.launchpad.net/bugs/1864061
>
> Please try 5.3.0-43 kernel.
>
>
> ** This bug has been marked a duplicate of bug 1864061
> PCI/internal sound card not detected

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.