Public bug reported: After upgrade to 20.10 repeatly got audio dummy output ,when I use sudo alsa force_reload and reboot system the audio come back .But after some days the problom reappear use the same method solved the audio issue .It maybe the kernel bug with this issue.
ProblemType: Bug DistroRelease: Ubuntu 20.10 Package: linux-image-5.8.0-26-generic 5.8.0-26.27 ProcVersionSignature: Ubuntu 5.8.0-26.27-generic 5.8.14 Uname: Linux 5.8.0-26-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.11-0ubuntu50 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: dell 5398 F.... pulseaudio dell 5402 F.... pipewire-media- /dev/snd/controlC1: dell 5402 F.... pipewire-media- /dev/snd/seq: dell 5397 F.... pipewire CasperMD5CheckResult: skip CurrentDesktop: KDE Date: Thu Oct 29 12:33:05 2020 HibernationDevice: RESUME=UUID=0c70f08b-8e7f-4c5d-a9d5-a0846776436b InstallationDate: Installed on 2018-06-15 (867 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) MachineType: Dell Inc. G7 7590 ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/BOOT/ubuntu@/vmlinuz-5.8.0-26-generic root=ZFS=rpool/ROOT/ubuntu ro quiet splash pti=off nouveau.modeset=0 nouveau.runpm=0 i915.enable_psr=0 init_on_alloc=0 vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-5.8.0-26-generic N/A linux-backports-modules-5.8.0-26-generic N/A linux-firmware 1.190 SourcePackage: linux UpgradeStatus: Upgraded to groovy on 2020-10-17 (11 days ago) dmi.bios.date: 05/22/2020 dmi.bios.release: 1.13 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.13.2 dmi.board.name: 0YC5C7 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.13.2:bd05/22/2020:br1.13:svnDellInc.:pnG77590:pvr:rvnDellInc.:rn0YC5C7:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: GSeries dmi.product.name: G7 7590 dmi.product.sku: 08EB dmi.sys.vendor: Dell Inc. modified.conffile..etc.default.apport: # set this to 0 to disable apport, or to 1 to enable it # you can temporarily override this with # sudo service apport start force_start=1 enabled=0 mtime.conffile..etc.default.apport: 2019-07-18T14:15:17 mtime.conffile..etc.logrotate.d.apport: 2020-10-26T16:26:26.813657 ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug groovy -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1901975 Title: After upgrade to 20.10 got audio dummy output To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1901975/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs