[BUG] Lenovo Yoga Pro 7 14ASP9 (83HN) – ALC287 bass speakers not powered / missing Realtek fixup

From: Steveo's Corner

Date: Fri Jan 02 2026 - 08:20:17 EST

Hello ALSA developers,

I am reporting a hardware support issue affecting the Lenovo Yoga Pro 7 14ASP9 (DMI product 83HN) on Linux.

Hardware

Software

Problem description

Internal audio works, but the bass (woofer) speakers are completely silent. Only the tweeter speakers produce sound, resulting in very thin audio output.

There are no errors reported in dmesg, and the system otherwise appears to initialize audio correctly.

Observations

From the codec dump:

From dmesg:

Expected behavior

The bass speakers should be powered and functional, as they are under Windows on the same hardware.

Actual behavior

The external bass speaker amplifier is never enabled, leaving the woofer speakers silent.

Assessment

This appears to be a missing Realtek HDA quirk for this Lenovo Yoga model. The hardware clearly exposes a dedicated bass speaker pin, but patch_realtek does not currently apply any Lenovo-specific fixup to initialize the external amplifier for pin 0x17 on this system.

This looks similar in nature to other Lenovo Yoga / Slim Pro ALC287 bass speaker quirks already present upstream, but none currently match DMI product 83HN or SSID 17aa:3903.

Attachments

Please let me know if any additional diagnostics (ACPI _DSD, acpidump, Windows comparison, etc.) would be helpful.

Thank you for your time and for maintaining ALSA.

Kind regards,
Brett

# dmidecode 3.6
Getting SMBIOS data from sysfs.
SMBIOS 3.6.0 present.

Handle 0x0001, DMI type 1, 27 bytes
System Information
Manufacturer: LENOVO
Product Name: 83HN
Version: Yoga Pro 7 14ASP9
Serial Number: YX0CZBB4
Wake-up Type: Power Switch
SKU Number: LENOVO_MT_83HN_BU_idea_FM_Yoga Pro 7 14ASP9
Family: Yoga Pro 7 14ASP9

Handle 0x001E, DMI type 12, 5 bytes
System Configuration Options
Option 1: String1 for Type12 Equipment Manufacturer
Option 2: String2 for Type12 Equipment Manufacturer
Option 3: String3 for Type12 Equipment Manufacturer
Option 4: String4 for Type12 Equipment Manufacturer

Handle 0x003B, DMI type 32, 20 bytes
System Boot Information
Status: No errors detected

[ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-6.17.0-8-generic root=UUID=1f3c18fa-a11a-4d61-b6c3-88da8ce0017b ro quiet splash snd_sof.enable=1 vt.handoff=7
[ 0.019986] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-6.17.0-8-generic root=UUID=1f3c18fa-a11a-4d61-b6c3-88da8ce0017b ro quiet splash snd_sof.enable=1 vt.handoff=7
[ 0.059518] rcu: RCU calculated value of scheduler-enlistment delay is 100 jiffies.
[ 0.068381] Calibrating delay loop (skipped), value calculated using timer frequency.. 3992.52 BogoMIPS (lpj=1996260)
[ 0.232122] ACPI: \_SB_.PCI0.GPPA.HDAU.PWRS: New power resource
[ 3.760170] snd_acp_pci 0000:62:00.5: enabling device (0000 -> 0002)
[ 3.800623] snd_hda_intel 0000:62:00.1: enabling device (0000 -> 0002)
[ 3.800665] snd_hda_intel 0000:62:00.1: Handle vga_switcheroo audio client
[ 3.800812] snd_hda_intel 0000:62:00.6: enabling device (0000 -> 0002)
[ 3.858013] snd_sof: unknown parameter 'enable' ignored
[ 3.867514] snd_hda_codec_alc269 hdaudioC1D0: ALC287: picked fixup for PCI SSID 17aa:38a7
[ 3.868241] snd_hda_codec_alc269 hdaudioC1D0: autoconfig for ALC287: line_outs=2 (0x14/0x17/0x0/0x0/0x0) type:speaker
[ 3.868244] snd_hda_codec_alc269 hdaudioC1D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[ 3.868245] snd_hda_codec_alc269 hdaudioC1D0: hp_outs=1 (0x21/0x0/0x0/0x0/0x0)
[ 3.868246] snd_hda_codec_alc269 hdaudioC1D0: mono: mono_out=0x0
[ 3.868247] snd_hda_codec_alc269 hdaudioC1D0: inputs:
[ 3.868249] snd_hda_codec_alc269 hdaudioC1D0: Internal Mic=0x12
[ 3.868250] snd_hda_codec_alc269 hdaudioC1D0: Internal Mic=0x13
[ 3.868251] snd_hda_codec_alc269 hdaudioC1D0: Mic=0x19
[ 5.522914] snd_hda_intel 0000:62:00.1: bound 0000:62:00.0 (ops amdgpu_dm_audio_component_bind_ops [amdgpu])
Codec: Realtek ALC287
Address: 0
AFG Function Id: 0x1 (unsol 1)
Vendor Id: 0x10ec0287
Subsystem Id: 0x17aa3903
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="DAC1 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 0x03 [Audio Output] wcaps 0x41d: Stereo Amp-Out
Control: name="DAC2 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: [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
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 [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
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
Control: name="Internal 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: [0x01 0x01]
Pincap 0x00000020: IN
Pin Default 0x90a60140: [Fixed] Mic at Int N/A
Conn = Digital, Color = Unknown
DefAssociation = 0x4, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x20: IN
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Node 0x13 [Pin Complex] wcaps 0x40040b: Stereo Amp-In
Control: name="Internal Mic Boost Volume", index=1, 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 0x00000020: IN
Pin Default 0x90a60150: [Fixed] Mic at Int N/A
Conn = Digital, Color = Unknown
DefAssociation = 0x5, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x20: IN
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: [0x00 0x00]
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
Control: name="Bass 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: [0x00 0x00]
Pincap 0x0000001c: OUT HP Detect
Pin Default 0x90170120: [Fixed] Speaker at Int N/A
Conn = Analog, Color = Unknown
DefAssociation = 0x2, 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: 4
0x02 0x03* 0x06 0x08
In-driver Connection: 2
0x02 0x03
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 0x40000000: [N/A] Line Out at Ext N/A
Conn = Unknown, Color = Unknown
DefAssociation = 0x0, Sequence = 0x0
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: [0x00 0x00]
Pincap 0x00003724: IN Detect
Vref caps: HIZ 50 GRD 80 100
Pin Default 0x03a11060: [Jack] Mic at Ext Left
Conn = 1/8, Color = Black
DefAssociation = 0x6, Sequence = 0x0
Pin-ctls: 0x24: IN VREF_80
Unsolicited: tag=05, 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 0x410abb6d: [N/A] Line Out at Ext Rear
Conn = RJ11, Color = UNKNOWN
DefAssociation = 0x6, Sequence = 0xd
Misc = NO_PRESENCE
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: [0x80 0x80]
Pincap 0x0001001c: OUT HP EAPD Detect
EAPD 0x2: EAPD
Pin Default 0x03211030: [Jack] HP Out at Ext Left
Conn = 1/8, Color = Black
DefAssociation = 0x3, Sequence = 0x0
Pin-ctls: 0xc0: OUT HP
Unsolicited: tag=02, 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: [0x80 0x80] [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