Public bug reported:
I installed Ubuntu 24.04.4 in TPM FDE mode.
The only available sound output device is the "Dummy output".
Have no idea why, but in TPM FDE mode the default Linux kernel for Ubuntu
24.04.4 is 6.8, I switched it to HWE/Stable 6.17, but it is not resolved the
issue.
I also tested the latest Ubuntu 26.04 daily build with Linux kernel 6.19
in TPM FDE mode, the issue is the same.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: alsa-base 1.0.25+dfsg-0ubuntu7
ProcVersionSignature: Ubuntu 6.17.0-14.14~24.04.1-generic 6.17.9
Uname: Linux 6.17.0-14-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/seq: test 2395 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Feb 13 15:11:09 2026
MachineType: HP HP EliteBook 860 16 inch G11 Notebook PC
PackageArchitecture: all
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: alsa-driver
Symptom: audio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/10/2025
dmi.bios.release: 8.1
dmi.bios.vendor: HP
dmi.bios.version: W70 Ver. 01.08.01
dmi.board.name: 8C26
dmi.board.vendor: HP
dmi.board.version: KBC Version 02.54.00
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.ec.firmware.release: 2.84
dmi.modalias:
dmi:bvnHP:bvrW70Ver.01.08.01:bd12/10/2025:br8.1:efr2.84:svnHP:pnHPEliteBook86016inchG11NotebookPC:pvrSBKPFV3:rvnHP:rn8C26:rvrKBCVersion02.54.00:cvnHP:ct10:cvr:sku8N377AV:
dmi.product.family: 103C_5336AN HP EliteBook
dmi.product.name: HP EliteBook 860 16 inch G11 Notebook PC
dmi.product.sku: 8N377AV
dmi.product.version: SBKPFV3
dmi.sys.vendor: HP
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble wayland-session
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https://bugs.launchpad.net/bugs/2141753
Title:
Dummy Output as output sound device in TPM FDE mode
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