Re: [Alsa-user] [External] Re: No sound on Lenovo P1 Gen 6 (upgraded to Gen 9)

[Jeff C. <jef...@gm...>]

On Mon, Sep 7, 2026 at 7:11 AM Mark Pearson <mpe...@sq...> wrote:
>
> On Fri, Sep 4, 2026, at 9:13 PM, Jeff Chua wrote:
> > It's been a while .. similar issue to my previous Lenovo P1 Gen 6 ..
> > now I've switched to Gen 9.
> >
> > I couldn't get sound to work on P1 Gen 9. It worked fine on P1 Gen 6.
> >
> > # lspci|grep audio
> > 00:1f.3 Multimedia audio controller: Intel Corporation Panther Lake
> > Smart Sound Technology BUS
> > 01:00.1 Audio device: NVIDIA Corporation GB206 High Definition Audio
> > Controller (rev a1)
> >
> > Hardware
> >     Machine: Lenovo ThinkPad P1 Gen 9 (model 21UFS0DJ00)
> >     CPU/Platform: Intel Core Ultra Series 3 "Panther Lake"
> >     Audio controller: Intel Panther Lake Smart Sound Technology BUS [8086:e328]
> >     PCI subsystem ID: 17aa:235c (Lenovo)
> >     Amplifiers: 2x Cirrus Logic CS35L57 Rev B2, OTP1, fw 4.2.1,
> > attached via SoundWire (SDCA SmartAmp function, type 1)
> >         sdw:0:2:01fa:3557:01:0
> >         sdw:0:2:01fa:3557:01:4
> >     Also present on the SoundWire bus: SDCA SmartMic (type 3), UAJ
> > jack (type 6), HID (type 10)
> >
> > Kernel
> >     Mainline 7.3.0-rc1
> >     sof-audio-pci-intel-ptl binds correctly to 0000:00:1f.3,
> > 0000:00:02.0 (GPU/DSP)
> >     SoundWire bus, Cadence controller, Intel bridge, and the CS35L57
> > SoundWire codec driver (snd_soc_cs35l56_sdw) all load and correctly
> > identify both amps by rev/fw version — driver-side recognition of the
> > codec is working
> >
> > Failure
> > sof-audio-pci-intel-ptl 0000:00:1f.3: No SoundWire machine driver
> > found for the ACPI-reported configuration:
> > sof-audio-pci-intel-ptl 0000:00:1f.3: link 2 mfg_id 0x01fa part_id
> > 0x3557 version 0x3
> > sof-audio-pci-intel-ptl 0000:00:1f.3: Use SoundWire default machine
> > driver with function topologies
> > sof-audio-pci-intel-ptl 0000:00:1f.3: SOF firmware and/or topology
> > file not found.
> > sof-audio-pci-intel-ptl 0000:00:1f.3: - ipc type 1 (Requested):
> > sof-audio-pci-intel-ptl 0000:00:1f.3:  Firmware file:
> > intel/sof-ipc4/ptl/sof-ptl.ri
> > sof-audio-pci-intel-ptl 0000:00:1f.3:  Topology file:
> > intel/sof-ipc4-tplg/sof-ptl-dummy.tplg
> > sof-audio-pci-intel-ptl 0000:00:1f.3: error: sof_probe_work failed err: -2
> >
> > Neither file is present in the current sof-bin release tree.
> > Downstream of this failure, the SoundWire codec resume/read/write
> > attempts also start timing out (-110, -13) — believed to be a
> > consequence of the aborted probe, not a separate issue.
> >
> > Result: no card registers with ALSA (/proc/asound/cards shows nothing
> > for the internal audio path).
> >
> > What's confirmed working
> >     Codec detection and identification (both CS35L57 amps enumerate
> > correctly with rev/fw info)
> >     SDCA function enumeration (SmartAmp x2, SmartMic, UAJ, HID all
> > reported by ACPI)
> >     Full kernel-side module chain: soundwire-bus, soundwire-cadence,
> > soundwire-intel, snd-soc-sdca, snd-soc-cs35l56-shared,
> > snd-soc-cs35l56-sdw, snd-sof, snd-sof-pci, snd-sof-pci-intel-ptl,
> > snd-soc-sof-sdw all present and loaded without error
> >
> > What's missing
> >     intel/sof-ipc4/ptl/sof-ptl.ri
> >     intel/sof-ipc4-tplg/sof-ptl-dummy.tplg (or, more usefully, a real
> > topology matching this specific CS35L57 dual-amp SDCA configuration
> > rather than a dummy fallback)
> >
> > Related prior reports
> >     thesofproject/sof-bin#196 — ThinkPad P1 Gen 8 (Arrow Lake,
> > CS42L43+CS35L56), same "Dummy Output" symptom, missing
> > sof-arl-cs42l43-l2-2ch.tplg
> >     Similar Panther Lake topology gaps reported independently for
> > other laptops (ASUS Zenbook S14, ASUS ROG Zephyrus G16) around the
> > same timeframe — suggests PTL+SDCA-amp topology coverage is broadly
> > behind hardware availability right now, not isolated to this one
> > board.
> >
> > Happy to test candidate firmware/topology files and report back — full
> > module/dmesg trail available on request.
> >
>
> Long weekend here (so I'm avoiding logging into the work VPN to be able to check specifics) but recommend making sure you have:
> - latest sof-bin installed
> - latest linux-firmware (particularly the cirrus firmware)

Any change to make it work like the Gne 6 wtithut
> I can check specifics next week if you still can't get it working.

Still no able to get it working with SOF just like how the P1 Gen does ...



> Mark