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[Launchpad Bug Tracker <2129735@xxxxxxxxxxxxxxxxxx>]

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When running Ubuntu 25.04, my Thinkpad X9 15's speakers and microphone
worked correctly, and were visible in the settings menu. After upgrading
to Ubuntu 25.10, the settings menu can no longer see the speakers or
microphone. Only a dummy output device is shown.

lspci -v shows that the audio controller is still found at a kernel
level:

00:1f.3 Multimedia audio controller: Intel Corporation Lunar Lake-M HD Audio Controller (rev 10)
	Subsystem: Lenovo Device 233b
	Flags: bus master, fast devsel, latency 64, IRQ 189, IOMMU group 17
	Memory at 2051200000 (64-bit, non-prefetchable) [size=512K]
	Memory at 2051000000 (64-bit, non-prefetchable) [size=2M]
	Capabilities: <access denied>
	Kernel driver in use: sof-audio-pci-intel-lnl
	Kernel modules: snd_sof_pci_intel_lnl, snd_hda_intel

ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: gnome-control-center 1:49.0-1ubuntu2
ProcVersionSignature: Ubuntu 6.17.0-5.5-generic 6.17.0-rc7
Uname: Linux 6.17.0-5-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Fri Oct 24 11:32:33 2025
InstallationDate: Installed on 2025-09-07 (47 days ago)
InstallationMedia: Ubuntu 25.04 "Plucky Puffin" - Release amd64 (20250415.3)
SourcePackage: gnome-control-center
UpgradeStatus: Upgraded to questing on 2025-10-14 (10 days ago)

** Affects: alsa-driver (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug questing third-party-packages wayland-session
-- 
Speakers and microphone lost after upgrade to Ubuntu 25.10
https://bugs.launchpad.net/bugs/2129735
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