[Bug 1901922] Re: [Lenovo ThinkPad T14 Gen 1] No sound output device on startup

[Hui Wang]

This is the alsa-lib debdiff for groovy.

thx.


** Patch added: "alsa-lib_1.2.3.2-1ubuntu4.debdiff"
   https://bugs.launchpad.net/ubuntu/+source/alsa-ucm-conf/+bug/1901922/+attachment/5432524/+files/alsa-lib_1.2.3.2-1ubuntu4.debdiff

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https://bugs.launchpad.net/bugs/1901922

Title:
  [Lenovo ThinkPad T14 Gen 1] No sound output device on startup

Status in PulseAudio:
  Unknown
Status in alsa-lib package in Ubuntu:
  In Progress
Status in alsa-ucm-conf package in Ubuntu:
  In Progress
Status in alsa-lib source package in Focal:
  In Progress
Status in alsa-ucm-conf source package in Focal:
  In Progress
Status in alsa-lib source package in Groovy:
  In Progress
Status in alsa-ucm-conf source package in Groovy:
  In Progress
Status in alsa-lib source package in Hirsute:
  In Progress
Status in alsa-ucm-conf source package in Hirsute:
  In Progress

Bug description:
  After logging in, only a dummy device is available for audio playback
  (resulting in no audible playback). When running "pactl load-module
  module-detect" the sound card shows up, and playback works as
  expected.

  If pulseaudio is restarted with "pulseaudio -k" the playback device
  disappears again. Running the above command get things working again.

  If I change the following section in /etc/pulse/default.pa from:

  ### Automatically load driver modules depending on the hardware available
  .ifexists module-udev-detect.so
  load-module module-udev-detect
  .else
  ### Use the static hardware detection module (for systems that lack udev support)
  load-module module-detect
  .endif

  To:

  ### Automatically load driver modules depending on the hardware available
  #.ifexists module-udev-detect.so
  #load-module module-udev-detect
  #.else
  ### Use the static hardware detection module (for systems that lack udev support)
  load-module module-detect
  #.endif

  Things start working as they should after running "pulseaudio -k".

  ProblemType: Bug
  DistroRelease: Ubuntu 20.10
  Package: pulseaudio 1:13.99.2-1ubuntu1
  ProcVersionSignature: Ubuntu 5.8.0-26.27-generic 5.8.14
  Uname: Linux 5.8.0-26-generic x86_64
  ApportVersion: 2.20.11-0ubuntu50
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: KDE
  Date: Wed Oct 28 17:21:02 2020
  InstallationDate: Installed on 2020-10-23 (4 days ago)
  InstallationMedia: Kubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
  SourcePackage: pulseaudio
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/07/2020
  dmi.bios.release: 1.9
  dmi.bios.vendor: LENOVO
  dmi.bios.version: R1BET40W(1.09 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20UDCTO1WW
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.ec.firmware.release: 1.9
  dmi.modalias: dmi:bvnLENOVO:bvrR1BET40W(1.09):bd08/07/2020:br1.9:efr1.9:svnLENOVO:pn20UDCTO1WW:pvrThinkPadT14Gen1:rvnLENOVO:rn20UDCTO1WW:rvrNotDefined:cvnLENOVO:ct10:cvrNone:
  dmi.product.family: ThinkPad T14 Gen 1
  dmi.product.name: 20UDCTO1WW
  dmi.product.sku: LENOVO_MT_20UD_BU_Think_FM_ThinkPad T14 Gen 1
  dmi.product.version: ThinkPad T14 Gen 1
  dmi.sys.vendor: LENOVO

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