PTL + RT722-SDCA + CS42L43 + CS35L57: No internal speaker audio - IPC4 widget type 27 (ALH copier SmartAmp) not supported in kernel

[samvoelzke]

Hardware

• Device: Lenovo Yoga Slim 7 Ultra 14IPH11 (Model 83QK)
• CPU: Intel Panther Lake
• OS: Fedora Linux 44
• Kernel: 7.0.10-200.fc44.x86_64
• alsa-sof-firmware: 2025.12.2

Audio hardware (detected)

• sdw:0:3:025d:0722:01 — RT722-SDCA (SoundWire link 3) — headset codec
• sdw:0:3:01fa:4243:01 — CS42L43 (SoundWire link 3) — codec bridge
• spi-cs35l56-left / spi-cs35l56-right — Cirrus Logic CS35L57 Rev B2 (SPI, via CS42L43 bridge) — speaker amplifiers

Problem

Internal speakers produce no sound. Headphone jack works.

The kernel selects topology sof-ptl-rt722-4ch.tplg which has ABI 3:29:1, but the kernel only supports ABI 3:23:1:

sof-audio-pci-intel-ptl: loading topology: intel/sof-ipc4-tplg/sof-ptl-rt722-4ch.tplg
sof-audio-pci-intel-ptl: Topology: ABI 3:29:1 Kernel ABI 3:23:1

When the ABI version header in the topology file is patched to 3:23:1 to bypass the version check, topology loading fails because the topology uses widget type 27 (ALH copier for SmartAmp) which is not implemented in the kernel's IPC4 topology parser:

sof-audio-pci-intel-ptl: error: can't find BE for DAI alh-copier.Playback-SmartAmp.1
sof-audio-pci-intel-ptl: failed to add widget type 27 name: alh-copier.Playback-SmartAmp.1 stream Playback-SmartAmp
sof_sdw: ASoC: topology: could not load header: -22

Trying the sof-ptl-cs42l43-agg-l3-cs35l56-l2-4ch.tplg topology (also ABI-patched) results in the same widget type 27 error.

Speaker audio path (as understood)

SOF DSP → SoundWire ALH copier (widget type 27) → CS42L43 → internal SPI bridge → CS35L57 left/right → speakers

What is needed

1. Implement widget type 27 (ALH copier / alh-copier) in the kernel's SOF IPC4 topology parser
2. Raise the supported IPC4 ABI version to 3:29 with full support for all new widget/token types

Related

• Similar issue on ASUS ROG Zephyrus (PTL, different codec): Missing sof-ptl-cs42l43-l3.tplg topology for ASUS ROG Zephyrus G16 GU606AP (Panther Lake + CS42L43 on link 3 + 2x CS35L56 on link 2) #5759
• Arch Linux forum thread for same device (83QK), unresolved: https://bbs.archlinux.org/viewtopic.php?id=313255
• Fedora bugzilla: https://bugzilla.redhat.com (filed separately)

[charleskeepax]

Yeah there are known ACPI issues on this laptop. We are trying to add some work arounds, would you try #5773 and attach a dmesg after that? Although full disclosure it does look like there might be some additional problems after the ones that fixes.

[samvoelzke]

How can I test PR #5773?
I'm running Fedora 44 and don't have experience compiling kernels.
Is there a pre-built test kernel available?

[charleskeepax]

Probably best to just hang tight for now in that case, we are trying to work through the issues. Going to close this issue as a duplicate of the other issue for the same laptop and you can follow the progress over there.

[charleskeepax]

Oh and once we have all the changes merged upstream you will likely need to let the Fedora folks know on that bug you opened there to make sure they are pulled into your Fedora kernel.