Public bug reported: # System This concerns Ubuntu 24.04 LTS running the pc-kernel snap with TPM-based full disk encryption. The device uses an Intel Core Ultra 5 125U .
# Description When using the pc-kernel snap, no audio is available to the system: ``` [ 6.200060] sof-audio-pci-intel-mtl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100 [ 6.200111] sof-audio-pci-intel-mtl 0000:00:1f.3: Digital mics found on Skylake+ platform, using SOF driver [ 6.200388] sof-audio-pci-intel-mtl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if 0x040100 [ 6.200827] sof-audio-pci-intel-mtl 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915]) [ 6.207483] sof-audio-pci-intel-mtl 0000:00:1f.3: use msi interrupt mode [ 6.293899] sof-audio-pci-intel-mtl 0000:00:1f.3: hda codecs found, mask 5 [ 6.293909] sof-audio-pci-intel-mtl 0000:00:1f.3: using HDA machine driver skl_hda_dsp_generic now [ 6.293918] sof-audio-pci-intel-mtl 0000:00:1f.3: DMICs detected in NHLT tables: 2 [ 6.294613] sof-audio-pci-intel-mtl 0000:00:1f.3: SOF firmware and/or topology file not found. [ 6.295594] sof-audio-pci-intel-mtl 0000:00:1f.3: Supported default profiles [ 6.295596] sof-audio-pci-intel-mtl 0000:00:1f.3: - ipc type 1 (Requested): [ 6.295599] sof-audio-pci-intel-mtl 0000:00:1f.3: Firmware file: intel/sof-ipc4/mtl/sof-mtl.ri [ 6.295601] sof-audio-pci-intel-mtl 0000:00:1f.3: Topology file: intel/sof-ace-tplg/sof-hda-generic-2ch.tplg [ 6.295603] sof-audio-pci-intel-mtl 0000:00:1f.3: Check if you have 'sof-firmware' package installed. [ 6.295606] sof-audio-pci-intel-mtl 0000:00:1f.3: Optionally it can be manually downloaded from: [ 6.295607] sof-audio-pci-intel-mtl 0000:00:1f.3: https://github.com/thesofproject/sof-bin/ [ 6.297818] sof-audio-pci-intel-mtl 0000:00:1f.3: error: sof_probe_work failed err: -2 ```[ 6.200060] sof-audio-pci-intel-mtl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100 [ 6.200111] sof-audio-pci-intel-mtl 0000:00:1f.3: Digital mics found on Skylake+ platform, using SOF driver [ 6.200388] sof-audio-pci-intel-mtl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if 0x040100 [ 6.200827] sof-audio-pci-intel-mtl 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915]) [ 6.207483] sof-audio-pci-intel-mtl 0000:00:1f.3: use msi interrupt mode [ 6.293899] sof-audio-pci-intel-mtl 0000:00:1f.3: hda codecs found, mask 5 [ 6.293909] sof-audio-pci-intel-mtl 0000:00:1f.3: using HDA machine driver skl_hda_dsp_generic now [ 6.293918] sof-audio-pci-intel-mtl 0000:00:1f.3: DMICs detected in NHLT tables: 2 [ 6.294613] sof-audio-pci-intel-mtl 0000:00:1f.3: SOF firmware and/or topology file not found. [ 6.295594] sof-audio-pci-intel-mtl 0000:00:1f.3: Supported default profiles [ 6.295596] sof-audio-pci-intel-mtl 0000:00:1f.3: - ipc type 1 (Requested): [ 6.295599] sof-audio-pci-intel-mtl 0000:00:1f.3: Firmware file: intel/sof-ipc4/mtl/sof-mtl.ri [ 6.295601] sof-audio-pci-intel-mtl 0000:00:1f.3: Topology file: intel/sof-ace-tplg/sof-hda-generic-2ch.tplg [ 6.295603] sof-audio-pci-intel-mtl 0000:00:1f.3: Check if you have 'sof-firmware' package installed. [ 6.295606] sof-audio-pci-intel-mtl 0000:00:1f.3: Optionally it can be manually downloaded from: [ 6.295607] sof-audio-pci-intel-mtl 0000:00:1f.3: https://github.com/thesofproject/sof-bin/ [ 6.297818] sof-audio-pci-intel-mtl 0000:00:1f.3: error: sof_probe_work failed err: -2 ``` When trying to install firmware-sof-signed using apt, the installation fails to pc-kernel's read-only filesystem: ``` dpkg: error processing archive /var/cache/apt/archives/firmware-sof-signed_2023.12.1-1ubuntu1.4_all.deb (--unpack): unable to create '/lib/firmware/intel/sof/community/sof-apl.ri.zst.dpkg-new' (while processing './lib/firmware/intel/sof/community/sof-apl.ri.zst'): Read-only file system dpkg: error while cleaning up: unable to remove newly-extracted version of '/lib/firmware/intel/sof/community/sof-apl.ri.zst': 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_2023.12.1-1ubuntu1.4_all.deb E: Sub-process /usr/bin/dpkg returned an error code (1) ``` No audio devices will be available to the system. # Expected behaviour Referenced firmware such as sof-audio-pci-intel-mtl should be included into the pc-kernel snap. ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: apt 2.7.14build2 ProcVersionSignature: Ubuntu 6.8.0-54.56-generic 6.8.12 Uname: Linux 6.8.0-54-generic x86_64 ApportVersion: 2.28.1-0ubuntu3.3 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Wed Mar 12 17:43:11 2025 ProcEnviron: LANG=de_DE.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> SourcePackage: apt UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: apt (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug noble wayland-session -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2102145 Title: Cannot use sof-firmware-signed with pc-kernel snap / sof-firmware not included in pc-kernel (no audio) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/2102145/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
