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Bug#1136179: Regression: no sound on Lunar Lake laptops due to missing spi-cs42l43 module

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  Bug#1136179: Regression: no sound on Lunar Lake laptops due to missing spi-cs42l43 module Lennart Ackermans <lennart@ackermans.ch> - 2026-05-10 17:30 +0200
    Bug#1136179: Regression: no sound on Lunar Lake laptops due to missing spi-cs42l43 module Uwe Kleine-König <ukleinek@debian.org> - 2026-05-17 14:20 +0200
    Processed: Re: Bug#1136179: Regression: no sound on Lunar Lake  laptops due to missing spi-cs42l43 module "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-05-17 14:20 +0200
    Bug#1136179: marked as done (Regression: no sound on Lunar Lake  laptops due to missing spi-cs42l43 module) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-05-19 17:10 +0200
    Bug#1136179: marked as done (Regression: no sound on Lunar Lake  laptops due to missing spi-cs42l43 module) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-07-11 13:10 +0200

#92440 — Bug#1136179: Regression: no sound on Lunar Lake laptops due to missing spi-cs42l43 module

Package: linux-image-amd64
Version: 7.0.4-1
Severity: important
Tags: upstream

Dear Maintainer,

Since updating from 6.19.11 to (I believe) 6.19.12 I have had no audio
on my laptop, Dell Pro 14 PA14250.

Previously the kernel included the module spi-cs42l43. I believe the
cause of the regression is that the module is no longer automatically
selected in the upstream Kconfig:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e920c36f2073d533bdf19ba6ab690432c8173b63

This fix is to set CONFIG_SPI_CS42L43 explicitly.

Diagnostics:

$ aplay -l
aplay: device_list:279: no soundcards found...
$ ls /sys/bus/spi/devices/
$ modprobe spi-cs42l43
modprobe: FATAL: Module spi-cs42l43 not found in directory /lib/modules/7.0.4+deb14-amd64
$ grep CS42L43 /boot/config-7.0.4+deb14-amd64
# CONFIG_PINCTRL_CS42L43 is not set
CONFIG_MFD_CS42L43=m
# CONFIG_MFD_CS42L43_I2C is not set
CONFIG_MFD_CS42L43_SDW=m
CONFIG_SND_SOC_CS42L43=m
CONFIG_SND_SOC_CS42L43_SDW=m
$ dmesg | grep -E 'cs42l43|sof_sdw'
[    5.951190] cs42l43 sdw:0:0:01fa:4243:01: supply vdd-p not found, using dummy regulator
[    5.951231] cs42l43 sdw:0:0:01fa:4243:01: supply vdd-d not found, using dummy regulator
[    5.951236] cs42l43 sdw:0:0:01fa:4243:01: supply vdd-a not found, using dummy regulator
[    5.951243] cs42l43 sdw:0:0:01fa:4243:01: supply vdd-io not found, using dummy regulator
[    5.951248] cs42l43 sdw:0:0:01fa:4243:01: supply vdd-cp not found, using dummy regulator
[    5.954422] cs42l43 sdw:0:0:01fa:4243:01: devid: 0x042a43, rev: 0xa1, otp: 0x03
[    5.992265] cs42l43 sdw:0:0:01fa:4243:01: Slave 6 state check1: UNATTACHED, status was 1
[   16.395497] platform sof_sdw: deferred probe pending: sof_sdw: snd_soc_register_card failed -517
$ lspci -v -s 00:1f.3
00:1f.3 Audio device: Intel Corporation Lunar Lake-M HD Audio Controller (rev 10) (prog-if 80 [HDA compatible with vendor specific extensions])
	Subsystem: Dell Device 0ce4
	Flags: bus master, fast devsel, latency 64, IRQ 194, IOMMU group 19
	Memory at 3015200000 (64-bit, non-prefetchable) [size=512K]
	Memory at 3015000000 (64-bit, non-prefetchable) [size=2M]
	Capabilities: [50] Power Management version 3
	Capabilities: [c0] Vendor Specific Information: Intel <unknown>
	Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
	Kernel driver in use: sof-audio-pci-intel-lnl
	Kernel modules: snd_sof_pci_intel_lnl, snd_hda_intel


-- System Information:
Debian Release: forky/sid
  APT prefers testing
  APT policy: (500, 'testing'), (500, 'oldstable'), (100, 'unstable'), (1, 'resolute')
Architecture: amd64 (x86_64)

Kernel: Linux 7.0.4+deb14-amd64 (SMP w/8 CPU threads; PREEMPT)
Kernel taint flags: TAINT_CRAP
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages linux-image-amd64 depends on:
ii  linux-base-amd64               7.0.4-1
ii  linux-image-7.0.4+deb14-amd64  7.0.4-1

linux-image-amd64 recommends no packages.

linux-image-amd64 suggests no packages.

-- no debconf information

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#92556

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Control: forwarded -1 https://salsa.debian.org/kernel-team/linux/-/merge_requests/1942

Hello,

On Sun, May 10, 2026 at 05:11:35PM +0200, Lennart Ackermans wrote:
> Package: linux-image-amd64
> Version: 7.0.4-1
> Severity: important
> Tags: upstream
> 
> Dear Maintainer,
> 
> Since updating from 6.19.11 to (I believe) 6.19.12 I have had no audio
> on my laptop, Dell Pro 14 PA14250.
> 
> Previously the kernel included the module spi-cs42l43. I believe the
> cause of the regression is that the module is no longer automatically
> selected in the upstream Kconfig:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e920c36f2073d533bdf19ba6ab690432c8173b63

Indeed this commit (e920c36f2073 ("ASoC: Intel: boards: fix unmet
dependency on PINCTRL")) was backported to v6.19.12~236 = de7076a98502
and also to v6.12.81~176 = 8b079642413d. Older kernels that are relevant
for Debian are not affected, as the commit that introduced the issue is
only in 6.11-rc1 (i.e. v6.11-rc1~108^2~6^2~75^2 = c073f0757663).

(Though our 6.1 kernel has SND_SOC_INTEL_SOUNDWIRE_SOF_MACH=m but the
two CS42L43 not enabled. I didn't research if these exist there already
and are needed, too. Might be worth a look from someone with that
hardware.)

I created a MR for this at
https://salsa.debian.org/kernel-team/linux/-/merge_requests/1942

Best regards
Uwe

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#92557 — Processed: Re: Bug#1136179: Regression: no sound on Lunar Lake laptops due to missing spi-cs42l43 module

Processing control commands:

> forwarded -1 https://salsa.debian.org/kernel-team/linux/-/merge_requests/1942
Bug #1136179 [src:linux] Regression: no sound on Lunar Lake laptops due to missing spi-cs42l43 module
Set Bug forwarded-to-address to 'https://salsa.debian.org/kernel-team/linux/-/merge_requests/1942'.

-- 
1136179: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1136179
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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#92614 — Bug#1136179: marked as done (Regression: no sound on Lunar Lake laptops due to missing spi-cs42l43 module)

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Your message dated Tue, 19 May 2026 15:05:47 +0000
with message-id <E1wPM0x-0000000CFKh-1ITP@fasolo.debian.org>
and subject line Bug#1136179: fixed in linux 7.1~rc4-1~exp1
has caused the Debian Bug report #1136179,
regarding Regression: no sound on Lunar Lake laptops due to missing spi-cs42l43 module
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
1136179: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1136179
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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#93313 — Bug#1136179: marked as done (Regression: no sound on Lunar Lake laptops due to missing spi-cs42l43 module)

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Your message dated Sat, 11 Jul 2026 11:04:02 +0000
with message-id <E1wiVV4-00000005vPL-2nIo@fasolo.debian.org>
and subject line Bug#1136179: fixed in linux 6.12.95-1
has caused the Debian Bug report #1136179,
regarding Regression: no sound on Lunar Lake laptops due to missing spi-cs42l43 module
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
1136179: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1136179
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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