Public bug reported:
Running Ubuntu 25.10.
I have a Dell XPS 9640 laptop. Usually, either the laptop speakers or
the headphones are chosen as a sound output. After I unplug the
headphones (using the headphone jack), the system volume jumps to the
maximum value, even if the system volume level was muted before plugging
in the headphones.
Expected behaviour: In most OSs/distros/previous Ubuntu versions, these two
states had their own setups: For example, I am at work, and I mute the laptop
speakers, then I plug in the headphones, the system automatically detects the
headphones, and sets the volume level to the previously used level. Then, after
I unplug the headphones, the sound becomes muted (as it was before plugging in
the headphones). So there were clearly 2 distinct states.
Sometimes, it is very annoying when at work, I unplug the headphones,
and the system gives out a loud noise to let me know that my volume
level is at maximum (or to bother my colleagues with other notification
sounds).
When I say maximum, I mean 100%. I enabled oversimplification, which is
not maximized.
ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: alsa-base 1.0.25+dfsg-0ubuntu8
ProcVersionSignature: Ubuntu 6.17.0-6.6-generic 6.17.1
Uname: Linux 6.17.0-6-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Mon Nov 17 18:52:47 2025
InstallationDate: Installed on 2025-10-22 (26 days ago)
InstallationMedia: Ubuntu 25.10 "Questing Quokka" - Release amd64 (20251007)
MachineType: Dell Inc. XPS 16 9640
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/05/2025
dmi.bios.release: 1.18
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.18.0
dmi.board.name: 09CK4V
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.ec.firmware.release: 1.20
dmi.modalias:
dmi:bvnDellInc.:bvr1.18.0:bd09/05/2025:br1.18:efr1.20:svnDellInc.:pnXPS169640:pvr:rvnDellInc.:rn09CK4V:rvrA00:cvnDellInc.:ct10:cvr:sku0C62:
dmi.product.family: XPS
dmi.product.name: XPS 16 9640
dmi.product.sku: 0C62
dmi.sys.vendor: Dell Inc.
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug questing third-party-packages wayland-session
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https://bugs.launchpad.net/bugs/2131685
Title:
Sound volume is maximized after headphones are unplugged
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