Public bug reported:
My headphone output is not working under ubuntu(Ubuntu 24.04.3 LTS), but
is under windows 11 (using a dual boot setup).
The built in speakers are functioning correctly and the switch over from
headphones to speakers is working. But there is no sound from the
headphones.
Settings in alsamixer and the regular system dialogue seem normal.
The bug report was generated using a live USB boot medium, but the same
issue appears on my regular ubuntu install.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: alsa-base 1.0.25+dfsg-0ubuntu7
ProcVersionSignature: Ubuntu 6.11.0-17.17~24.04.2-generic 6.11.11
Uname: Linux 6.11.0-17-generic x86_64
NonfreeKernelModules: zfs
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/seq: ubuntu 3707 F.... pipewire
CasperMD5CheckResult: pass
CasperVersion: 1.498
CloudArchitecture: x86_64
CloudID: nocloud
CloudName: unknown
CloudPlatform: nocloud
CloudSubPlatform: seed-dir (/var/lib/cloud/seed/nocloud)
CurrentDesktop: ubuntu:GNOME
Date: Sat Jan 31 20:21:39 2026
LiveMediaBuild: Ubuntu 24.04.2 LTS "Noble Numbat" - Release amd64 (20250215)
MachineType: LENOVO 21SYS00H00
PackageArchitecture: all
ProcEnviron:
LANG=C.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: alsa-driver
Symptom: audio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/30/2025
dmi.bios.release: 1.12
dmi.bios.vendor: LENOVO
dmi.bios.version: R30ET38W(1.12 )
dmi.board.asset.tag: Not Available
dmi.board.name: 21SYS00H00
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: 1.12
dmi.modalias:
dmi:bvnLENOVO:bvrR30ET38W(1.12):bd10/30/2025:br1.12:efr1.12:svnLENOVO:pn21SYS00H00:pvrThinkPadE14Gen7:rvnLENOVO:rn21SYS00H00:rvrNotDefined:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_21SY_BU_Think_FM_ThinkPadE14Gen7:
dmi.product.family: ThinkPad E14 Gen 7
dmi.product.name: 21SYS00H00
dmi.product.sku: LENOVO_MT_21SY_BU_Think_FM_ThinkPad E14 Gen 7
dmi.product.version: ThinkPad E14 Gen 7
dmi.sys.vendor: LENOVO
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble
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https://bugs.launchpad.net/bugs/2139512
Title:
Headphone output on SN6140 not working
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