I've also tried booting a live USB with the latest alpha version from 21.04, based on kernel 5.8.0-36-generic, and the results are the same: no sound card detected, "Dummy Output" displayed in Sound Settings. See attached archive with same logs (dmesg, pactl, alsa-info).
** Attachment added: "21.04-kernel-5.8.0-36-audio-logs.tar.xz" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1915117/+attachment/5461562/+files/21.04-kernel-5.8.0-36-audio-logs.tar.xz ** Description changed: Ubuntu version: 20.10 (updated from 20.04) Kernel: 5.8.0-41-generic #46-Ubuntu Manufacturer: Acer Product Name: Swift SF314-54 BIOS Revision: 1.11 Audio card: Realtek High Definition Audio Multimedia audio controller [0401]: Intel Corporation Sunrise Point-LP HD Audio [8086:9d71] (rev 21) Summary ======= After upgrading from linux kernel 5.4 to 5.8, there is no more sound card available. However, if I select kernel 5.4 in GRUB, the sound card is available. Steps to reproduce ================== 1. Install 20.04 or 20.10 with a kenel 5.4 2. Check that sound output works as excepted (Settings > Sound > Output > Test) 3. Check that `alsa-info` command returns information 4. Upgrade kernel to 5.8 Expected results ================ Sound output still works. Actual results ============== - No more sound card detected (Sound Settings display "Dummy Output" in - the list of output devices). + 2. Sound card is available, and sound can be output to the internal speakers. + 4. No more sound card detected (Sound Settings display "Dummy Output" in the list of output devices). ProblemType: Bug DistroRelease: Ubuntu 20.10 Package: linux-image-5.8.0-41-generic 5.8.0-41.46 ProcVersionSignature: Ubuntu 5.8.0-41.46-generic 5.8.18 Uname: Linux 5.8.0-41-generic x86_64 ApportVersion: 2.20.11-0ubuntu50.5 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Tue Feb 9 14:42:00 2021 InstallationDate: Installed on 2019-01-20 (751 days ago) InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3) MachineType: Acer Swift SF314-54 ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.8.0-41-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash mem_sleep_default=deep vt.handoff=7 RelatedPackageVersions: - linux-restricted-modules-5.8.0-41-generic N/A - linux-backports-modules-5.8.0-41-generic N/A - linux-firmware 1.190.3 + linux-restricted-modules-5.8.0-41-generic N/A + linux-backports-modules-5.8.0-41-generic N/A + linux-firmware 1.190.3 SourcePackage: linux UpgradeStatus: Upgraded to groovy on 2021-02-03 (5 days ago) dmi.bios.date: 11/21/2018 dmi.bios.release: 1.11 dmi.bios.vendor: Insyde Corp. dmi.bios.version: V1.11 dmi.board.name: Strongbow_KL dmi.board.vendor: KBL dmi.board.version: V1.11 dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.11 dmi.ec.firmware.release: 1.6 dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.11:bd11/21/2018:br1.11:efr1.6:svnAcer:pnSwiftSF314-54:pvrV1.11:rvnKBL:rnStrongbow_KL:rvrV1.11:cvnAcer:ct10:cvrV1.11: dmi.product.family: Swift 3 dmi.product.name: Swift SF314-54 dmi.product.sku: 0000000000000000 dmi.product.version: V1.11 dmi.sys.vendor: Acer -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1915117 Title: [Regression] Audio card [8086:9d71] not detected after upgrade from linux 5.4 to 5.8 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1915117/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
