You have been subscribed to a public bug: I recently upgraded from 18.04 to 20.04. The sound worked without problems before upgrade, but now I don'get any sound at all from the speakers or the headphone jack.
This seems similar to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1860697 (although that bug is reported as resolved). I tried adding model=generic dmic_detect=0 to my alsa-base.conf, as reported in that ticket, but it did not help. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: pulseaudio 1:13.99.1-1ubuntu3.8 ProcVersionSignature: Ubuntu 5.4.0-54.60-generic 5.4.65 Uname: Linux 5.4.0-54-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.13 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CasperMD5CheckResult: skip CurrentDesktop: XFCE Date: Sat Nov 28 18:36:36 2020 InstallationDate: Installed on 2018-07-27 (855 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) SourcePackage: pulseaudio UpgradeStatus: Upgraded to focal on 2020-11-24 (4 days ago) dmi.bios.date: 10/13/2020 dmi.bios.vendor: LENOVO dmi.bios.version: N23ET75W (1.50 ) dmi.board.asset.tag: Not Available dmi.board.name: 20KGCTO1WW dmi.board.vendor: LENOVO dmi.board.version: SDK0J40709 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN23ET75W(1.50):bd10/13/2020:svnLENOVO:pn20KGCTO1WW:pvrThinkPadX1Carbon6th:rvnLENOVO:rn20KGCTO1WW:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad X1 Carbon 6th dmi.product.name: 20KGCTO1WW dmi.product.sku: LENOVO_MT_20KG_BU_Think_FM_ThinkPad X1 Carbon 6th dmi.product.version: ThinkPad X1 Carbon 6th dmi.sys.vendor: LENOVO ** Affects: alsa-lib (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug focal -- no sound via speakers or headphone port on Carbon X1 6th https://bugs.launchpad.net/bugs/1906101 You received this bug notification because you are a member of Kernel Packages, which is subscribed to alsa-lib in Ubuntu. -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
