Public bug reported:
[Impact]
The two Cirrus CS35L56 amplifiers in the Lenovo ThinkBook 16p G6 IAX never load
their tuning firmware. Both amps stay on ROM firmware with no tuning and no
calibration applied: the speakers are very quiet and have no bass.
linux-firmware ships this machine's tuning as
cirrus/cs35l56-b0-dsp1-misc-17aa3921-spkid1-amp{1,2}.bin
but the BIOS on this unit declares no spk-id-gpios, so
cirrus_scodec_get_speaker_id() returns -ENOENT and cs35l56_hda requests the
name without the -spkid1 infix, which does not exist:
cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: Cirrus Logic CS35L56 Rev B0 OTP3
fw:3.4.4 (patched=0)
cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: DSP system name: '17AA3921', amp
name: 'AMP1'
cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: .bin file required but not found
cs35l56-hda i2c-CSC3556:00-cs35l56-hda.1: .bin file required but not found
[Fix]
Add the non-differentiated names as links to the existing vendor-differentiated
files. Proposed upstream as linux-firmware MR !1223:
https://gitlab.com/kernel-firmware/linux-
firmware/-/merge_requests/1223
Three Link: lines in WHENCE; no firmware files are added or modified.
An earlier upstream attempt renamed the files (bd28704a) and was reverted
(739c7638), because renaming breaks BIOS builds that do declare spk-id-gpios.
Adding links instead keeps both BIOS variants working.
[Test Case]
Before:
$ journalctl -k -b | grep cs35l56
... .bin file required but not found
... amps report fw:3.4.4 (patched=0)
After:
cs35l56-hda ...hda.0: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa3921.wmfw: format
3 timestamp 0x66881e93
cs35l56-hda ...hda.0: DSP1: Firmware: 1a00d6 vendor: 0x2 v3.11.21, 41
algorithms
cs35l56-hda ...hda.0: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa3921-amp1.bin
(v1): v3.11.21
cs35l56-hda ...hda.1: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa3921-amp2.bin
(v1): v3.11.21
cs35l56-hda ...hda.0: Calibration applied
cs35l56-hda ...hda.1: Calibration applied
Audibly: bass returns and the speakers are considerably louder.
Verified by placing the three names in /lib/firmware/updates/cirrus/ and
rebooting.
[Workaround]
Alias the firmware under the name the kernel requests, in
/lib/firmware/updates/cirrus/, which the kernel searches ahead of
/lib/firmware and which package upgrades do not touch:
S=/lib/firmware/cirrus; D=/lib/firmware/updates/cirrus
B=cs35l56-b0-dsp1-misc-17aa3921
sudo install -d $D
sudo ln -sfn $S/$B-spkid1.wmfw.zst $D/$B.wmfw.zst
sudo ln -sfn $S/$B-spkid1-amp1.bin.zst $D/$B-amp1.bin.zst
sudo ln -sfn $S/$B-spkid1-amp2.bin.zst $D/$B-amp2.bin.zst
then reboot. Undo with: sudo rm -rf /lib/firmware/updates/cirrus
### ** Script, verification steps and a fuller explanation: **
https://github.com/saied89/thinkbook-16p-g6-iax-speaker-fix
Note also that the amplifiers' 'AMP1/AMP2 Speaker Playback Volume' controls
default to 0 dB with 12 dB of headroom unused, which accounts for much of the
remaining loudness difference against Windows. That is a separate issue from
this bug.
[Where problems could occur]
The change adds filenames only. No existing file is renamed, moved or modified,
so machines whose BIOS does declare spk-id-gpios continue to resolve the
-spkid1 names exactly as before. Impact is confined to SSID 17aa3921.
[Other Info]
System: Lenovo ThinkBook 16p G6 IAX, BIOS R2CN57WW (2026-02-24)
Ubuntu 26.04, kernel 7.0.0-30-generic, linux-firmware 20260319.git217ca6e4
A user reports the same symptom and the same resolution on SSID 17aa391e, also
a ThinkBook 16p G6, which likewise ships only one spkid variant (-spkid0).
https://www.reddit.com/r/Ubuntu/comments/1q0d6tt/solved_lenovo_thinkbook_16p_g6_iax_legion_7/
** Affects: linux-firmware (Ubuntu)
Importance: Undecided
Status: New
** Description changed:
[Impact]
The two Cirrus CS35L56 amplifiers in the Lenovo ThinkBook 16p G6 IAX never
load
their tuning firmware. Both amps stay on ROM firmware with no tuning and no
calibration applied: the speakers are very quiet and have no bass.
linux-firmware ships this machine's tuning as
- cirrus/cs35l56-b0-dsp1-misc-17aa3921-spkid1-amp{1,2}.bin
+ cirrus/cs35l56-b0-dsp1-misc-17aa3921-spkid1-amp{1,2}.bin
but the BIOS on this unit declares no spk-id-gpios, so
cirrus_scodec_get_speaker_id() returns -ENOENT and cs35l56_hda requests the
name without the -spkid1 infix, which does not exist:
- cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: Cirrus Logic CS35L56 Rev B0 OTP3
fw:3.4.4 (patched=0)
- cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: DSP system name: '17AA3921', amp
name: 'AMP1'
- cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: .bin file required but not found
- cs35l56-hda i2c-CSC3556:00-cs35l56-hda.1: .bin file required but not found
+ cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: Cirrus Logic CS35L56 Rev B0 OTP3
fw:3.4.4 (patched=0)
+ cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: DSP system name: '17AA3921', amp
name: 'AMP1'
+ cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: .bin file required but not found
+ cs35l56-hda i2c-CSC3556:00-cs35l56-hda.1: .bin file required but not found
[Fix]
Add the non-differentiated names as links to the existing
vendor-differentiated
files. Proposed upstream as linux-firmware MR !1223:
- https://gitlab.com/kernel-firmware/linux-
+ https://gitlab.com/kernel-firmware/linux-
firmware/-/merge_requests/1223
Three Link: lines in WHENCE; no firmware files are added or modified.
An earlier upstream attempt renamed the files (bd28704a) and was reverted
(739c7638), because renaming breaks BIOS builds that do declare spk-id-gpios.
Adding links instead keeps both BIOS variants working.
[Test Case]
Before:
- $ journalctl -k -b | grep cs35l56
- ... .bin file required but not found
- ... amps report fw:3.4.4 (patched=0)
+ $ journalctl -k -b | grep cs35l56
+ ... .bin file required but not found
+ ... amps report fw:3.4.4 (patched=0)
After:
- cs35l56-hda ...hda.0: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa3921.wmfw:
format 3 timestamp 0x66881e93
- cs35l56-hda ...hda.0: DSP1: Firmware: 1a00d6 vendor: 0x2 v3.11.21, 41
algorithms
- cs35l56-hda ...hda.0: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa3921-amp1.bin
(v1): v3.11.21
- cs35l56-hda ...hda.1: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa3921-amp2.bin
(v1): v3.11.21
- cs35l56-hda ...hda.0: Calibration applied
- cs35l56-hda ...hda.1: Calibration applied
+ cs35l56-hda ...hda.0: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa3921.wmfw:
format 3 timestamp 0x66881e93
+ cs35l56-hda ...hda.0: DSP1: Firmware: 1a00d6 vendor: 0x2 v3.11.21, 41
algorithms
+ cs35l56-hda ...hda.0: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa3921-amp1.bin
(v1): v3.11.21
+ cs35l56-hda ...hda.1: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa3921-amp2.bin
(v1): v3.11.21
+ cs35l56-hda ...hda.0: Calibration applied
+ cs35l56-hda ...hda.1: Calibration applied
Audibly: bass returns and the speakers are considerably louder.
Verified by placing the three names in /lib/firmware/updates/cirrus/ and
rebooting.
[Workaround]
Alias the firmware under the name the kernel requests, in
/lib/firmware/updates/cirrus/, which the kernel searches ahead of
/lib/firmware and which package upgrades do not touch:
- S=/lib/firmware/cirrus; D=/lib/firmware/updates/cirrus
- B=cs35l56-b0-dsp1-misc-17aa3921
- sudo install -d $D
- sudo ln -sfn $S/$B-spkid1.wmfw.zst $D/$B.wmfw.zst
- sudo ln -sfn $S/$B-spkid1-amp1.bin.zst $D/$B-amp1.bin.zst
- sudo ln -sfn $S/$B-spkid1-amp2.bin.zst $D/$B-amp2.bin.zst
+ S=/lib/firmware/cirrus; D=/lib/firmware/updates/cirrus
+ B=cs35l56-b0-dsp1-misc-17aa3921
+ sudo install -d $D
+ sudo ln -sfn $S/$B-spkid1.wmfw.zst $D/$B.wmfw.zst
+ sudo ln -sfn $S/$B-spkid1-amp1.bin.zst $D/$B-amp1.bin.zst
+ sudo ln -sfn $S/$B-spkid1-amp2.bin.zst $D/$B-amp2.bin.zst
then reboot. Undo with: sudo rm -rf /lib/firmware/updates/cirrus
Script, verification steps and a fuller explanation:
https://github.com/saied89/thinkbook-16p-g6-iax-speaker-fix
Note also that the amplifiers' 'AMP1/AMP2 Speaker Playback Volume' controls
default to 0 dB with 12 dB of headroom unused, which accounts for much of the
remaining loudness difference against Windows. That is a separate issue from
this bug.
[Where problems could occur]
The change adds filenames only. No existing file is renamed, moved or
modified,
so machines whose BIOS does declare spk-id-gpios continue to resolve the
-spkid1 names exactly as before. Impact is confined to SSID 17aa3921.
[Other Info]
System: Lenovo ThinkBook 16p G6 IAX, BIOS R2CN57WW (2026-02-24)
Ubuntu 26.04, kernel 7.0.0-30-generic, linux-firmware 20260319.git217ca6e4
A user reports the same symptom and the same resolution on SSID 17aa391e, also
a ThinkBook 16p G6, which likewise ships only one spkid variant (-spkid0).
+
https://www.reddit.com/r/Ubuntu/comments/1q0d6tt/solved_lenovo_thinkbook_16p_g6_iax_legion_7/
** Description changed:
[Impact]
The two Cirrus CS35L56 amplifiers in the Lenovo ThinkBook 16p G6 IAX never
load
their tuning firmware. Both amps stay on ROM firmware with no tuning and no
calibration applied: the speakers are very quiet and have no bass.
linux-firmware ships this machine's tuning as
cirrus/cs35l56-b0-dsp1-misc-17aa3921-spkid1-amp{1,2}.bin
but the BIOS on this unit declares no spk-id-gpios, so
cirrus_scodec_get_speaker_id() returns -ENOENT and cs35l56_hda requests the
name without the -spkid1 infix, which does not exist:
cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: Cirrus Logic CS35L56 Rev B0 OTP3
fw:3.4.4 (patched=0)
cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: DSP system name: '17AA3921', amp
name: 'AMP1'
cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: .bin file required but not found
cs35l56-hda i2c-CSC3556:00-cs35l56-hda.1: .bin file required but not found
[Fix]
Add the non-differentiated names as links to the existing
vendor-differentiated
files. Proposed upstream as linux-firmware MR !1223:
https://gitlab.com/kernel-firmware/linux-
firmware/-/merge_requests/1223
Three Link: lines in WHENCE; no firmware files are added or modified.
An earlier upstream attempt renamed the files (bd28704a) and was reverted
(739c7638), because renaming breaks BIOS builds that do declare spk-id-gpios.
Adding links instead keeps both BIOS variants working.
[Test Case]
Before:
$ journalctl -k -b | grep cs35l56
... .bin file required but not found
... amps report fw:3.4.4 (patched=0)
After:
cs35l56-hda ...hda.0: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa3921.wmfw:
format 3 timestamp 0x66881e93
cs35l56-hda ...hda.0: DSP1: Firmware: 1a00d6 vendor: 0x2 v3.11.21, 41
algorithms
cs35l56-hda ...hda.0: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa3921-amp1.bin
(v1): v3.11.21
cs35l56-hda ...hda.1: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa3921-amp2.bin
(v1): v3.11.21
cs35l56-hda ...hda.0: Calibration applied
cs35l56-hda ...hda.1: Calibration applied
Audibly: bass returns and the speakers are considerably louder.
Verified by placing the three names in /lib/firmware/updates/cirrus/ and
rebooting.
[Workaround]
Alias the firmware under the name the kernel requests, in
/lib/firmware/updates/cirrus/, which the kernel searches ahead of
/lib/firmware and which package upgrades do not touch:
S=/lib/firmware/cirrus; D=/lib/firmware/updates/cirrus
B=cs35l56-b0-dsp1-misc-17aa3921
sudo install -d $D
sudo ln -sfn $S/$B-spkid1.wmfw.zst $D/$B.wmfw.zst
sudo ln -sfn $S/$B-spkid1-amp1.bin.zst $D/$B-amp1.bin.zst
sudo ln -sfn $S/$B-spkid1-amp2.bin.zst $D/$B-amp2.bin.zst
then reboot. Undo with: sudo rm -rf /lib/firmware/updates/cirrus
- Script, verification steps and a fuller explanation:
+ * Script, verification steps and a fuller explanation: *
https://github.com/saied89/thinkbook-16p-g6-iax-speaker-fix
Note also that the amplifiers' 'AMP1/AMP2 Speaker Playback Volume' controls
default to 0 dB with 12 dB of headroom unused, which accounts for much of the
remaining loudness difference against Windows. That is a separate issue from
this bug.
[Where problems could occur]
The change adds filenames only. No existing file is renamed, moved or
modified,
so machines whose BIOS does declare spk-id-gpios continue to resolve the
-spkid1 names exactly as before. Impact is confined to SSID 17aa3921.
[Other Info]
System: Lenovo ThinkBook 16p G6 IAX, BIOS R2CN57WW (2026-02-24)
Ubuntu 26.04, kernel 7.0.0-30-generic, linux-firmware 20260319.git217ca6e4
A user reports the same symptom and the same resolution on SSID 17aa391e, also
a ThinkBook 16p G6, which likewise ships only one spkid variant (-spkid0).
https://www.reddit.com/r/Ubuntu/comments/1q0d6tt/solved_lenovo_thinkbook_16p_g6_iax_legion_7/
** Description changed:
[Impact]
The two Cirrus CS35L56 amplifiers in the Lenovo ThinkBook 16p G6 IAX never
load
their tuning firmware. Both amps stay on ROM firmware with no tuning and no
calibration applied: the speakers are very quiet and have no bass.
linux-firmware ships this machine's tuning as
cirrus/cs35l56-b0-dsp1-misc-17aa3921-spkid1-amp{1,2}.bin
but the BIOS on this unit declares no spk-id-gpios, so
cirrus_scodec_get_speaker_id() returns -ENOENT and cs35l56_hda requests the
name without the -spkid1 infix, which does not exist:
cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: Cirrus Logic CS35L56 Rev B0 OTP3
fw:3.4.4 (patched=0)
cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: DSP system name: '17AA3921', amp
name: 'AMP1'
cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: .bin file required but not found
cs35l56-hda i2c-CSC3556:00-cs35l56-hda.1: .bin file required but not found
[Fix]
Add the non-differentiated names as links to the existing
vendor-differentiated
files. Proposed upstream as linux-firmware MR !1223:
https://gitlab.com/kernel-firmware/linux-
firmware/-/merge_requests/1223
Three Link: lines in WHENCE; no firmware files are added or modified.
An earlier upstream attempt renamed the files (bd28704a) and was reverted
(739c7638), because renaming breaks BIOS builds that do declare spk-id-gpios.
Adding links instead keeps both BIOS variants working.
[Test Case]
Before:
$ journalctl -k -b | grep cs35l56
... .bin file required but not found
... amps report fw:3.4.4 (patched=0)
After:
cs35l56-hda ...hda.0: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa3921.wmfw:
format 3 timestamp 0x66881e93
cs35l56-hda ...hda.0: DSP1: Firmware: 1a00d6 vendor: 0x2 v3.11.21, 41
algorithms
cs35l56-hda ...hda.0: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa3921-amp1.bin
(v1): v3.11.21
cs35l56-hda ...hda.1: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa3921-amp2.bin
(v1): v3.11.21
cs35l56-hda ...hda.0: Calibration applied
cs35l56-hda ...hda.1: Calibration applied
Audibly: bass returns and the speakers are considerably louder.
Verified by placing the three names in /lib/firmware/updates/cirrus/ and
rebooting.
[Workaround]
Alias the firmware under the name the kernel requests, in
/lib/firmware/updates/cirrus/, which the kernel searches ahead of
/lib/firmware and which package upgrades do not touch:
S=/lib/firmware/cirrus; D=/lib/firmware/updates/cirrus
B=cs35l56-b0-dsp1-misc-17aa3921
sudo install -d $D
sudo ln -sfn $S/$B-spkid1.wmfw.zst $D/$B.wmfw.zst
sudo ln -sfn $S/$B-spkid1-amp1.bin.zst $D/$B-amp1.bin.zst
sudo ln -sfn $S/$B-spkid1-amp2.bin.zst $D/$B-amp2.bin.zst
then reboot. Undo with: sudo rm -rf /lib/firmware/updates/cirrus
- * Script, verification steps and a fuller explanation: *
+ ** Script, verification steps and a fuller explanation: **
https://github.com/saied89/thinkbook-16p-g6-iax-speaker-fix
Note also that the amplifiers' 'AMP1/AMP2 Speaker Playback Volume' controls
default to 0 dB with 12 dB of headroom unused, which accounts for much of the
remaining loudness difference against Windows. That is a separate issue from
this bug.
[Where problems could occur]
The change adds filenames only. No existing file is renamed, moved or
modified,
so machines whose BIOS does declare spk-id-gpios continue to resolve the
-spkid1 names exactly as before. Impact is confined to SSID 17aa3921.
[Other Info]
System: Lenovo ThinkBook 16p G6 IAX, BIOS R2CN57WW (2026-02-24)
Ubuntu 26.04, kernel 7.0.0-30-generic, linux-firmware 20260319.git217ca6e4
A user reports the same symptom and the same resolution on SSID 17aa391e, also
a ThinkBook 16p G6, which likewise ships only one spkid variant (-spkid0).
https://www.reddit.com/r/Ubuntu/comments/1q0d6tt/solved_lenovo_thinkbook_16p_g6_iax_legion_7/
** Description changed:
[Impact]
The two Cirrus CS35L56 amplifiers in the Lenovo ThinkBook 16p G6 IAX never
load
their tuning firmware. Both amps stay on ROM firmware with no tuning and no
calibration applied: the speakers are very quiet and have no bass.
linux-firmware ships this machine's tuning as
cirrus/cs35l56-b0-dsp1-misc-17aa3921-spkid1-amp{1,2}.bin
but the BIOS on this unit declares no spk-id-gpios, so
cirrus_scodec_get_speaker_id() returns -ENOENT and cs35l56_hda requests the
name without the -spkid1 infix, which does not exist:
cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: Cirrus Logic CS35L56 Rev B0 OTP3
fw:3.4.4 (patched=0)
cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: DSP system name: '17AA3921', amp
name: 'AMP1'
cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: .bin file required but not found
cs35l56-hda i2c-CSC3556:00-cs35l56-hda.1: .bin file required but not found
[Fix]
Add the non-differentiated names as links to the existing
vendor-differentiated
files. Proposed upstream as linux-firmware MR !1223:
https://gitlab.com/kernel-firmware/linux-
firmware/-/merge_requests/1223
Three Link: lines in WHENCE; no firmware files are added or modified.
An earlier upstream attempt renamed the files (bd28704a) and was reverted
(739c7638), because renaming breaks BIOS builds that do declare spk-id-gpios.
Adding links instead keeps both BIOS variants working.
[Test Case]
Before:
$ journalctl -k -b | grep cs35l56
... .bin file required but not found
... amps report fw:3.4.4 (patched=0)
After:
cs35l56-hda ...hda.0: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa3921.wmfw:
format 3 timestamp 0x66881e93
cs35l56-hda ...hda.0: DSP1: Firmware: 1a00d6 vendor: 0x2 v3.11.21, 41
algorithms
cs35l56-hda ...hda.0: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa3921-amp1.bin
(v1): v3.11.21
cs35l56-hda ...hda.1: DSP1: cirrus/cs35l56-b0-dsp1-misc-17aa3921-amp2.bin
(v1): v3.11.21
cs35l56-hda ...hda.0: Calibration applied
cs35l56-hda ...hda.1: Calibration applied
Audibly: bass returns and the speakers are considerably louder.
Verified by placing the three names in /lib/firmware/updates/cirrus/ and
rebooting.
[Workaround]
Alias the firmware under the name the kernel requests, in
/lib/firmware/updates/cirrus/, which the kernel searches ahead of
/lib/firmware and which package upgrades do not touch:
S=/lib/firmware/cirrus; D=/lib/firmware/updates/cirrus
B=cs35l56-b0-dsp1-misc-17aa3921
sudo install -d $D
sudo ln -sfn $S/$B-spkid1.wmfw.zst $D/$B.wmfw.zst
sudo ln -sfn $S/$B-spkid1-amp1.bin.zst $D/$B-amp1.bin.zst
sudo ln -sfn $S/$B-spkid1-amp2.bin.zst $D/$B-amp2.bin.zst
then reboot. Undo with: sudo rm -rf /lib/firmware/updates/cirrus
- ** Script, verification steps and a fuller explanation: **
+ ### ** Script, verification steps and a fuller explanation: **
https://github.com/saied89/thinkbook-16p-g6-iax-speaker-fix
Note also that the amplifiers' 'AMP1/AMP2 Speaker Playback Volume' controls
default to 0 dB with 12 dB of headroom unused, which accounts for much of the
remaining loudness difference against Windows. That is a separate issue from
this bug.
[Where problems could occur]
The change adds filenames only. No existing file is renamed, moved or
modified,
so machines whose BIOS does declare spk-id-gpios continue to resolve the
-spkid1 names exactly as before. Impact is confined to SSID 17aa3921.
[Other Info]
System: Lenovo ThinkBook 16p G6 IAX, BIOS R2CN57WW (2026-02-24)
Ubuntu 26.04, kernel 7.0.0-30-generic, linux-firmware 20260319.git217ca6e4
A user reports the same symptom and the same resolution on SSID 17aa391e, also
a ThinkBook 16p G6, which likewise ships only one spkid variant (-spkid0).
https://www.reddit.com/r/Ubuntu/comments/1q0d6tt/solved_lenovo_thinkbook_16p_g6_iax_legion_7/
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https://bugs.launchpad.net/bugs/2166808
Title:
[Lenovo ThinkBook 16p G6 IAX, 17aa:3921] Misnamed Cirrus CS35L56
firmware leaves speakers untuned
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