Public bug reported:
Summary:
The sound card was working perfectly until yesterday, but after installing the
system updates on February 23rd, the audio output has completely stopped
working.
Steps to Reproduce:
Use Ubuntu 26.04 with audio working (as of Feb 22nd).
Apply system updates released on February 23, 2026.
Restart the system.
Attempt to play any sound.
Expected Result:
Audio should be played through the output device as it did before the update.
Actual Result:
No sound output is available. The system fails to recognize the hardware or
remains silent despite showing active streams.
Additional Context:
This is a regression caused by the latest package updates (Feb 23). I suspect
it might be related to the recent kernel or PipeWire/WirePlumber updates in the
development branch.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: alsa-base 1.0.25+dfsg-0ubuntu9
ProcVersionSignature: Ubuntu 6.19.0-6.6-generic 6.19.2
Uname: Linux 6.19.0-6-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: e16 3901 F.... pipewire
e16 3921 F.... wireplumber
/dev/snd/seq: e16 3901 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Tue Feb 24 04:21:07 2026
InstallationDate: Installed on 2026-02-23 (0 days ago)
InstallationMedia: Ubuntu 26.04 LTS "Resolute Raccoon" - Daily amd64 (20260218)
MachineType: LENOVO 21JN002AKD
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/13/2025
dmi.bios.release: 1.39
dmi.bios.vendor: LENOVO
dmi.bios.version: R2AET64W(1.39)
dmi.board.asset.tag: Not Available
dmi.board.name: 21JN002AKD
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 1.39
dmi.modalias:
dmi:bvnLENOVO:bvrR2AET64W(1.39):bd06/13/2025:br1.39:efr1.39:svnLENOVO:pn21JN002AKD:pvrThinkPadE16Gen1:rvnLENOVO:rn21JN002AKD:rvrNotDefined:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_21JN_BU_Think_FM_ThinkPadE16Gen1:
dmi.product.family: ThinkPad E16 Gen 1
dmi.product.name: 21JN002AKD
dmi.product.sku: LENOVO_MT_21JN_BU_Think_FM_ThinkPad E16 Gen 1
dmi.product.version: ThinkPad E16 Gen 1
dmi.sys.vendor: LENOVO
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
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https://bugs.launchpad.net/bugs/2142505
Title:
Audio output not working after upgrading to Ubuntu 26.04
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