*** This bug is a duplicate of bug 2092363 ***
https://bugs.launchpad.net/bugs/2092363
** This bug has been marked a duplicate of bug 2092363
No Audio Device Detected on HP EliteBook 840 G11 with pc-kernel Snap
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https://bugs.launchpad.net/bugs/2099845
Title:
Sound not working on Dell XPS 14 9440 with Snap-managed kernel
Status in alsa-driver package in Ubuntu:
New
Bug description:
I cannot get the sound working my Dell XPS 14 9440 laptop.
Importantly, this laptop is using TPM FDE (so the kernel is managed by
Snap).
I had exactly these same issues with Ubuntu 24.04, but I reinstalled
with 24.10 and this bug is documenting my experience in 24.10.
Here's the hardware device:
$ sudo lspci | grep Audio
0000:00:1f.3 Multimedia audio controller: Intel Corporation Meteor Lake-P HD
Audio Controller (rev 20)
The dmesg output clearly indicates the problem:
[ 37.729950] sof-audio-pci-intel-mtl 0000:00:1f.3: enabling device (0000 ->
0002)
[ 37.730039] sof-audio-pci-intel-mtl 0000:00:1f.3: DSP detected with PCI
class/subclass/prog-if 0x040100
[ 37.730091] sof-audio-pci-intel-mtl 0000:00:1f.3: bound 0000:00:02.0 (ops
i915_audio_component_bind_ops [i915])
[ 37.736671] sof-audio-pci-intel-mtl 0000:00:1f.3: use msi interrupt mode
[ 37.753104] sof-audio-pci-intel-mtl 0000:00:1f.3: hda codecs found, mask 4
[ 37.753411] sof-audio-pci-intel-mtl 0000:00:1f.3: SOF firmware and/or
topology file not found.
[ 37.756034] sof-audio-pci-intel-mtl 0000:00:1f.3: Supported default
profiles
[ 37.756036] sof-audio-pci-intel-mtl 0000:00:1f.3: - ipc type 1 (Requested):
[ 37.756038] sof-audio-pci-intel-mtl 0000:00:1f.3: Firmware file:
intel/sof-ipc4/mtl/sof-mtl.ri
[ 37.756040] sof-audio-pci-intel-mtl 0000:00:1f.3: Topology file:
intel/sof-ace-tplg/sof-mtl-cs42l43-l0-cs35l56-l23.tplg
[ 37.756041] sof-audio-pci-intel-mtl 0000:00:1f.3: Check if you have
'sof-firmware' package installed.
[ 37.756043] sof-audio-pci-intel-mtl 0000:00:1f.3: Optionally it can be
manually downloaded from:
[ 37.756044] sof-audio-pci-intel-mtl 0000:00:1f.3:
https://github.com/thesofproject/sof-bin/
[ 37.758046] sof-audio-pci-intel-mtl 0000:00:1f.3: error: sof_probe_work
failed err: -2
If I try to install the firmware-sof-signed package, it fails and gets
into a pretty bad state because it tries to write to a readonly
location. Seems like that package is entirely incompatible with the
Snap-managed kernel this machine has:
$ sudo apt install firmware-sof-signed
The following package was automatically installed and is no longer required:
python3-netifaces
Use 'sudo apt autoremove' to remove it.
Installing:
firmware-sof-signed
Summary:
Upgrading: 0, Installing: 1, Removing: 0, Not Upgrading: 1
Download size: 7,093 kB
Space needed: 9,779 kB / 464 GB available
Get:1 http://us.archive.ubuntu.com/ubuntu oracular-updates/main amd64
firmware-sof-signed all 2024.06-1ubuntu1.3 [7,093 kB]
Fetched 7,093 kB in 1s (7,389 kB/s)
Selecting previously unselected package firmware-sof-signed.
(Reading database ... 107544 files and directories currently installed.)
Preparing to unpack .../firmware-sof-signed_2024.06-1ubuntu1.3_all.deb ...
Unpacking firmware-sof-signed (2024.06-1ubuntu1.3) ...
dpkg: error processing archive
/var/cache/apt/archives/firmware-sof-signed_2024.06-1ubuntu1.3_all.deb
(--unpack):
error creating directory './usr/lib/firmware/intel/sof': Read-only file
system
dpkg: error while cleaning up:
unable to remove newly-extracted version of '/usr/lib/firmware/intel/sof':
Read-only file system
dpkg-deb: error: paste subprocess was killed by signal (Broken pipe)
Errors were encountered while processing:
/var/cache/apt/archives/firmware-sof-signed_2024.06-1ubuntu1.3_all.deb
Error: Sub-process /usr/bin/dpkg returned an error code (1)
I know from a previous Ubuntu install that didn't use TPM-based FDE
that I can manually place the SOF firmware files into place and get it
working (hackily). But that approach won't work here with the Snap-
managed kernels.
One strange thing that I noticed was that the Oracular installer
environment *did* have working sound. And indeed, the dmesg output
there showed that it found the correct SOF firmware files and loaded
the driver just fine. But once I installed Ubuntu to the disk, sound
was in this broken state.
ProblemType: Bug
DistroRelease: Ubuntu 24.10
Package: alsa-base 1.0.25+dfsg-0ubuntu7
ProcVersionSignature: Ubuntu 6.11.0-18.18-generic 6.11.11
Uname: Linux 6.11.0-18-generic x86_64
ApportVersion: 2.30.0-0ubuntu4
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/seq: kat 3575 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sun Feb 23 16:55:15 2025
MachineType: Dell Inc. XPS 14 9440
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: 10/21/2024
dmi.bios.release: 1.9
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.9.0
dmi.board.name: 0CWTN6
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.ec.firmware.release: 1.22
dmi.modalias:
dmi:bvnDellInc.:bvr1.9.0:bd10/21/2024:br1.9:efr1.22:svnDellInc.:pnXPS149440:pvr:rvnDellInc.:rn0CWTN6:rvrA00:cvnDellInc.:ct10:cvr:sku0C6B:
dmi.product.family: XPS
dmi.product.name: XPS 14 9440
dmi.product.sku: 0C6B
dmi.sys.vendor: Dell Inc.
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