Public bug reported: 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 ** Affects: alsa-driver (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1868782 Title: PCI/internal sound card not detected "dummy output" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1868782/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs