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

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Hui Wang (hui.wang):

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

** Affects: pulseaudio
     Importance: Unknown
         Status: Unknown

** Affects: alsa-lib (Ubuntu)
     Importance: High
     Assignee: Hui Wang (hui.wang)
         Status: In Progress

** Affects: alsa-ucm-conf (Ubuntu)
     Importance: High
     Assignee: Hui Wang (hui.wang)
         Status: In Progress

** Affects: alsa-lib (Ubuntu Focal)
     Importance: High
     Assignee: Hui Wang (hui.wang)
         Status: In Progress

** Affects: alsa-ucm-conf (Ubuntu Focal)
     Importance: High
     Assignee: Hui Wang (hui.wang)
         Status: In Progress

** Affects: alsa-lib (Ubuntu Groovy)
     Importance: High
     Assignee: Hui Wang (hui.wang)
         Status: In Progress

** Affects: alsa-ucm-conf (Ubuntu Groovy)
     Importance: High
     Assignee: Hui Wang (hui.wang)
         Status: In Progress

** Affects: alsa-lib (Ubuntu Hirsute)
     Importance: High
     Assignee: Hui Wang (hui.wang)
         Status: In Progress

** Affects: alsa-ucm-conf (Ubuntu Hirsute)
     Importance: High
     Assignee: Hui Wang (hui.wang)
         Status: In Progress


** Tags: amd64 apport-bug groovy
-- 
[Lenovo ThinkPad T14 Gen 1] No sound output device on startup
https://bugs.launchpad.net/bugs/1901922
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