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apport-collect 1906101

and then change the status of the bug to 'Confirmed'.

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This change has been made by an automated script, maintained by the
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** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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Touch seeded packages, which is subscribed to alsa-lib in Ubuntu.
https://bugs.launchpad.net/bugs/1906101

Title:
  no sound via speakers or headphone port on Carbon X1 6th

Status in alsa-lib package in Ubuntu:
  New
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  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

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