Missing Cirrus CS35L56 firmware for Lenovo Xiaoxin Pro 14 ASP10 (SSID 17aa:3912) causes distorted/crackling audio

[Viktor Menshin <ripeeerr@gmail.com>]

Hi,

I'm running Linux on a Lenovo Xiaoxin Pro 14 ASP10 (83LR), an AMD Ryzen AI 9 365
(Strix Point) laptop. Audio through both the internal speakers and the
headphone jack is heavily distorted/crackling on every kernel and distro I've
tried (self-built 6.19-arch1, current 7.1.6-arch1-1 on EndeavourOS, and a
Fedora live image).

The same distortion is present on Windows before installing the Realtek
driver package, which suggests the issue is a missing/incorrect vendor
configuration rather than something purely Linux-side.

System info:
$ uname -a
Linux riper-83lr 7.1.6-arch1-1 #1 SMP PREEMPT_DYNAMIC Tue, 04 Aug 2026 11:19:27 +0000 x86_64 GNU/Linux

$ lspci -nnk | grep -iA3 audio
c2:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Radeon High Definition Audio Controller [1002:1640]
	Subsystem: Lenovo Device [17aa:3852]
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd_hda_intel
--
c2:00.5 Multimedia controller [0480]: Advanced Micro Devices, Inc. [AMD] Audio Coprocessor [1022:15e2] (rev 70)
	Subsystem: Lenovo Device [17aa:38c1]
	Kernel driver in use: snd_acp_pci
	Kernel modules: snd_pci_acp3x, snd_rn_pci_acp3x, snd_pci_acp5x, snd_pci_acp6x, snd_acp_pci, snd_pci_ps, snd_sof_amd_renoir, snd_sof_amd_rembrandt, snd_sof_amd_vangogh, snd_sof_amd_acp63, snd_sof_amd_acp70
c2:00.6 Audio device [0403]: Advanced Micro Devices, Inc. [AMD] Ryzen HD Audio Controller [1022:15e3]
	Subsystem: Lenovo Device [17aa:38b2]
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd_hda_intel

Codec: Realtek ALC287, Subsystem ID 17aa:3912 (reported by /proc/asound/card1/codec#0)
Amplifier: Cirrus Logic amp present via ACPI HID CIRQ1080

Relevant dmesg (fixup selection):
[    7.206943] snd_hda_codec_alc269 hdaudioC1D0: ALC287: picked fixup  for PCI SSID 17aa:0000
[    7.207280] snd_hda_codec_alc269 hdaudioC1D0: autoconfig for ALC287: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:speaker
[    7.207282] snd_hda_codec_alc269 hdaudioC1D0:    speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[    7.207283] snd_hda_codec_alc269 hdaudioC1D0:    hp_outs=1 (0x21/0x0/0x0/0x0/0x0)
[    7.207284] snd_hda_codec_alc269 hdaudioC1D0:    inputs:
[    7.207285] snd_hda_codec_alc269 hdaudioC1D0:      Mic=0x19

The codec falls back to the generic "17aa:0000" Lenovo fixup, since there is
no specific quirk entry for SSID 17aa:3912 in patch_realtek.c.

The snd_hda_scodec_cs35l56 module is present in the kernel tree and loads
successfully when probed manually via modprobe, but produces no dmesg output
at all — no firmware-related errors and no successful init messages either.
It is not auto-loaded/bound on boot (lsmod shows nothing for cs35l56 without
manual modprobe).

Checking linux-firmware, there are many SSID-specific Cirrus CS35L56
firmware files under /usr/lib/firmware/cirrus/, including neighboring SSIDs
such as 17aa3910 and 17aa3911, but nothing for 17aa3912:

$ find /usr/lib/firmware/cirrus -iname "*17aa3912*"
(no output)

As a test, I temporarily copied the 17aa3911 firmware files
(cs35l56-b0-dsp1-misc-17aa3911-spkid0.wmfw.zst and the matching amp1/amp2
.bin.zst files) and renamed them to 17aa3912, rebuilt the initramfs, and
rebooted. This did not fix the distortion, which is expected since amp
calibration data is board/speaker-specific and not interchangeable between
models. I've since removed these test files.

I've also ruled out several other possible causes:
- hdajackretask pin overrides — no effect
- snd_hda_intel position_fix=1/2/3 — no effect
- PipeWire buffer/quantum tuning (quantum 1024/512/2048) — no effect
- Forcing S16LE format in WirePlumber to avoid resampling — no effect
- Testing with plain aplay directly against ALSA (bypassing PipeWire
  entirely, with an increased buffer/period size) — still distorted
- The distortion is present continuously during playback on both speakers
  and headphones equally, not tied to idle/wake power transitions

Given the codec pin configuration looks sane (attached below) and the amp
module is present in the kernel but never successfully probed, I believe the
missing piece is CS35L56 firmware/calibration data specific to SSID
17aa:3912 for this laptop model.

Is it possible to get Cirrus Logic firmware submitted for this SSID, or
could you point me toward the right process/contact to request it? Happy to
gather any additional diagnostics needed (full alsa-info.sh dump, acpidump,
etc).

Thanks,
Viktor Menshin

--- Full codec dump: cat /proc/asound/card1/codec#0 ---

Codec: Realtek ALC287
Address: 0
AFG Function Id: 0x1 (unsol 1)
Vendor Id: 0x10ec0287
Subsystem Id: 0x17aa3912
Revision Id: 0x100002
No Modem Function Group found
Default PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
State of AFG node 0x01:
  Power states:  D0 D1 D2 D3 D3cold CLKSTOP EPSS
  Power: setting=D0, actual=D0
GPIO: io=5, o=0, i=0, unsolicited=1, wake=0
  IO[0]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
  IO[1]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
  IO[2]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
  IO[3]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
  IO[4]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
Node 0x02 [Audio Output] wcaps 0x41d: Stereo Amp-Out
  Control: name="Speaker Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Amp-Out caps: ofs=0x57, nsteps=0x57, stepsize=0x02, mute=0
  Amp-Out vals:  [0x38 0x38]
  Converter: stream=0, channel=0
  PCM:
    rates [0x40]: 48000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
Node 0x03 [Audio Output] wcaps 0x41d: Stereo Amp-Out
  Control: name="Headphone Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Device: name="ALC287 Analog", type="Audio", device=0
  Amp-Out caps: ofs=0x57, nsteps=0x57, stepsize=0x02, mute=0
  Amp-Out vals:  [0x57 0x57]
  Converter: stream=0, channel=0
  PCM:
    rates [0x40]: 48000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
Node 0x04 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x05 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x06 [Audio Output] wcaps 0x411: Stereo
  Converter: stream=0, channel=0
  PCM:
    rates [0x40]: 48000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
Node 0x07 [Audio Input] wcaps 0x10051b: Stereo Amp-In
  Amp-In caps: ofs=0x17, nsteps=0x3f, stepsize=0x02, mute=1
  Amp-In vals:  [0x97 0x97]
  Converter: stream=0, channel=0
  SDI-Select: 0
  PCM:
    rates [0x40]: 48000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
  Connection: 1
     0x24
Node 0x08 [Audio Input] wcaps 0x10051b: Stereo Amp-In
  Control: name="Capture Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Control: name="Capture Switch", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Device: name="ALC287 Analog", type="Audio", device=0
  Amp-In caps: ofs=0x17, nsteps=0x3f, stepsize=0x02, mute=1
  Amp-In vals:  [0x3f 0x3f]
  Converter: stream=0, channel=0
  SDI-Select: 0
  PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
  Connection: 1
     0x23
Node 0x09 [Audio Input] wcaps 0x10051b: Stereo Amp-In
  Amp-In caps: ofs=0x17, nsteps=0x3f, stepsize=0x02, mute=1
  Amp-In vals:  [0x97 0x97]
  Converter: stream=0, channel=0
  SDI-Select: 0
  PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
  Connection: 1
     0x22
Node 0x0a [Audio Input] wcaps 0x10051b: Stereo Amp-In
  Amp-In caps: ofs=0x17, nsteps=0x3f, stepsize=0x02, mute=1
  Amp-In vals:  [0x97 0x97]
  Converter: stream=0, channel=0
  SDI-Select: 0
  PCM:
    rates [0x40]: 48000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
  Connection: 1
     0x25
Node 0x0b [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x0c [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x0d [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x0e [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x0f [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x10 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x11 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x12 [Pin Complex] wcaps 0x40040b: Stereo Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals:  [0x00 0x00]
  Pincap 0x00000020: IN
  Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x00:
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
Node 0x13 [Pin Complex] wcaps 0x40040b: Stereo Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals:  [0x00 0x00]
  Pincap 0x00000020: IN
  Pin Default 0x40000000: [N/A] Line Out at Ext N/A
    Conn = Unknown, Color = Unknown
    DefAssociation = 0x0, Sequence = 0x0
  Pin-ctls: 0x00:
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
Node 0x14 [Pin Complex] wcaps 0x40058d: Stereo Amp-Out
  Control: name="Speaker Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x80 0x80]
  Pincap 0x00010014: OUT EAPD Detect
  EAPD 0x2: EAPD
  Pin Default 0x90170110: [Fixed] Speaker at Int N/A
    Conn = Analog, Color = Unknown
    DefAssociation = 0x1, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=00, enabled=0
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
  Connection: 1
     0x02
Node 0x15 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x16 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x17 [Pin Complex] wcaps 0x40058d: Stereo Amp-Out
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x80 0x80]
  Pincap 0x0000001c: OUT HP Detect
  Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x00:
  Unsolicited: tag=00, enabled=0
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
  Connection: 4
     0x02* 0x03 0x06 0x08
Node 0x18 [Pin Complex] wcaps 0x40048b: Stereo Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals:  [0x00 0x00]
  Pincap 0x00000024: IN Detect
  Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x00:
  Unsolicited: tag=00, enabled=0
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
Node 0x19 [Pin Complex] wcaps 0x40048b: Stereo Amp-In
  Control: name="Mic Boost Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals:  [0x03 0x03]
  Pincap 0x00003724: IN Detect
    Vref caps: HIZ 50 GRD 80 100
  Pin Default 0x04a11040: [Jack] Mic at Ext Right
    Conn = 1/8, Color = Black
    DefAssociation = 0x4, Sequence = 0x0
  Pin-ctls: 0x24: IN VREF_80
  Unsolicited: tag=02, enabled=1
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
Node 0x1a [Pin Complex] wcaps 0x40048b: Stereo Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals:  [0x00 0x00]
  Pincap 0x00003724: IN Detect
    Vref caps: HIZ 50 GRD 80 100
  Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x00: VREF_HIZ
  Unsolicited: tag=00, enabled=0
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
Node 0x1b [Pin Complex] wcaps 0x40058f: Stereo Amp-In Amp-Out
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals:  [0x00 0x00]
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x80 0x80]
  Pincap 0x00013734: IN OUT EAPD Detect
    Vref caps: HIZ 50 GRD 80 100
  EAPD 0x2: EAPD
  Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x00: VREF_HIZ
  Unsolicited: tag=00, enabled=0
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
  Connection: 2
     0x02* 0x03
Node 0x1c [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x1d [Pin Complex] wcaps 0x400400: Mono
  Pincap 0x00000020: IN
  Pin Default 0x40600001: [N/A] Modem Line at Ext N/A
    Conn = Unknown, Color = Unknown
    DefAssociation = 0x0, Sequence = 0x1
  Pin-ctls: 0x20: IN
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
Node 0x1e [Pin Complex] wcaps 0x400501: Stereo
  Pincap 0x00000010: OUT
  Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x40: OUT
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
  Connection: 1
     0x06
Node 0x1f [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x20 [Vendor Defined Widget] wcaps 0xf00040: Mono
  Processing caps: benign=0, ncoeff=142
Node 0x21 [Pin Complex] wcaps 0x40058d: Stereo Amp-Out
  Control: name="Headphone Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x00 0x00]
  Pincap 0x0001001c: OUT HP EAPD Detect
  EAPD 0x2: EAPD
  Pin Default 0x04211020: [Jack] HP Out at Ext Right
    Conn = 1/8, Color = Black
    DefAssociation = 0x2, Sequence = 0x0
  Pin-ctls: 0xc0: OUT HP
  Unsolicited: tag=01, enabled=1
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
  Connection: 2
     0x02 0x03*
Node 0x22 [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals:  [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80]
  Connection: 5
     0x19 0x1a 0x1b 0x1d 0x13
Node 0x23 [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals:  [0x00 0x00] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80]
  Connection: 5
     0x19 0x1a 0x1b 0x1d 0x12
Node 0x24 [Audio Selector] wcaps 0x300101: Stereo
  Connection: 3
     0x12* 0x13 0x18
Node 0x25 [Audio Selector] wcaps 0x300101: Stereo
  Connection: 2
     0x12* 0x13