No internal microphone with AMD ACP/ACP3X/ACP6x

Hello everyone!
I’m back from about a year on Arch because I needed to compile my own kernel module for getting the internal microphone to work.

I really really want to use NixOS though so here I am. I will stay even with no mic this time but I thought I’d at least try my luck asking for help from you knowledgeable people.

Here’s some info - let me know what else you need, and thank you for your time!

My relevant config:

  # hardware.url = "github:nixos/nixos-hardware";
  imports = [
    inputs.hardware.nixosModules.common-cpu-amd
    inputs.hardware.nixosModules.common-gpu-amd
    inputs.hardware.nixosModules.common-gpu-nvidia-disable
    inputs.hardware.nixosModules.common-pc-laptop
    inputs.hardware.nixosModules.common-pc-ssd
    ./hardware-configuration.nix
  ];

  boot.initrd.kernelModules = [ "amdgpu" "snd_pci_acp6x"];
  boot.kernelPackages = pkgs.linuxPackages_latest;
  sound.enable = true;
  services.pipewire = {
    enable = true;
    alsa.enable = true;
    pulse.enable = true;
    wireplumber.enable = true;
  };

Info about my system:

neofetch --off
ab@abdev
--------
OS: NixOS 23.11.20240225.5bf1cad (Tapir) x86_64
Host: ASUSTeK COMPUTER INC. M6501RM
Kernel: 6.7.6
Uptime: 3 mins
Packages: 1005 (nix-system), 400 (nix-user)
Shell: fish 3.7.0
Resolution: 2880x1620
WM: sway
Theme: Dracula [GTK3]
Icons: Adwaita [GTK3]
Terminal: WezTerm
CPU: AMD Ryzen 7 6800H with Radeon Graphics (16) @ 4.785GHz
GPU: AMD ATI Radeon 680M
Memory: 1725MiB / 31344MiB
dmidecode -t baseboard
# dmidecode 3.5
Getting SMBIOS data from sysfs.
SMBIOS 3.4.0 present.

Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
        Manufacturer: ASUSTeK COMPUTER INC.
        Product Name: M6501RM
        Version: 1.0
        Serial Number: N938NBCV00BWX9MB
        Asset Tag: ATN12345678901234567
        Features:
                Board is a hosting board
                Board is replaceable
        Location In Chassis: MIDDLE
        Chassis Handle: 0x0003
        Type: Motherboard
        Contained Object Handles: 0

Handle 0x002A, DMI type 10, 26 bytes
On Board Device 1 Information
        Type: Video
        Status: Enabled
        Description: VGA
On Board Device 2 Information
        Type: Ethernet
        Status: Enabled
        Description: GLAN
On Board Device 3 Information
        Type: Ethernet
        Status: Enabled
        Description: WLAN
On Board Device 4 Information
        Type: Sound
        Status: Enabled
        Description: Audio CODEC
On Board Device 5 Information
        Type: SATA Controller
        Status: Enabled
        Description: SATA Controller
On Board Device 6 Information
        Type: Other
        Status: Enabled
        Description: USB 2.0 Controller
On Board Device 7 Information
        Type: Other
        Status: Enabled
        Description: USB 3.0 Controller
On Board Device 8 Information
        Type: Other
        Status: Enabled
        Description: SMBus Controller
On Board Device 9 Information
        Type: Other
        Status: Enabled
        Description: Card Reader
On Board Device 10 Information
        Type: Other
        Status: Enabled
        Description: Cmos Camera
On Board Device 11 Information
        Type: Other
        Status: Enabled
        Description: Bluetooth
lspci | grep Audio
66:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Rembrandt Radeon High Definition Audio Controller
66:00.5 Multimedia controller: Advanced Micro Devices, Inc. [AMD] ACP/ACP3X/ACP6x Audio Coprocessor (rev 60)
66:00.6 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h/19h HD Audio Controller```
arecord -l

**** List of CAPTURE Hardware Devices ****
card 1: Generic_1 [HD-Audio Generic], device 0: ALC294 Analog [ALC294 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0

lsmod | grep acp
snd_acp6x_pdm_dma      12288  0
snd_soc_acp6x_mach     28672  0
snd_sof_amd_acp63      16384  0
snd_sof_amd_acp        61440  4 snd_sof_amd_rembrandt,snd_sof_amd_vangogh,snd_sof_amd_acp63,snd_sof_amd_renoir
snd_sof_pci            24576  4 snd_sof_amd_rembrandt,snd_sof_amd_vangogh,snd_sof_amd_acp63,snd_sof_amd_renoir
snd_sof_xtensa_dsp     16384  1 snd_sof_amd_acp
snd_sof               360448  2 snd_sof_amd_acp,snd_sof_pci
snd_soc_core          430080  4 snd_soc_acp6x_mach,snd_sof,snd_acp6x_pdm_dma,snd_soc_dmic
snd_rpl_pci_acp6x      16384  0
snd_intel_sdw_acpi     16384  1 snd_intel_dspcfg
snd_acp_pci            12288  0
snd_acp_legacy_common    16384  1 snd_acp_pci
snd_pci_acp5x          16384  0
snd_rn_pci_acp3x       20480  0
ucsi_acpi              12288  0
typec_ucsi             61440  1 ucsi_acpi
snd_pci_acp3x          16384  0
i2c_hid_acpi           12288  0
i2c_hid                40960  1 i2c_hid_acpi
acpi_tad               20480  0
snd_pci_acp6x          16384  0
snd_pcm               196608  13 snd_sof_amd_acp,snd_hda_codec_hdmi,snd_pci_acp6x,snd_hda_intel,snd_hda_codec,snd_sof,snd_acp6x_pdm_dma,snd_compress,snd_soc_core,snd_sof_utils,snd_hda_core,snd_pci_ps,snd_pcm_dmaengine
snd_acp_config         20480  9 snd_rn_pci_acp3x,snd_pci_acp6x,snd_pci_acp5x,snd_sof_amd_rembrandt,snd_sof_amd_vangogh,snd_sof_amd_acp63,snd_acp_pci,snd_pci_ps,snd_sof_amd_renoir
snd_soc_acpi           16384  2 snd_sof_amd_acp,snd_acp_config
firmware_class         53248  18 r8169,mt792x_lib,ccp,btrtl,snd_sof_amd_acp,snd_hda_intel,xhci_pci_renesas,btmtk,snd_sof,drm_display_helper,btintel,btbcm,amdgpu,btusb,mt7921_common,mt76_connac_lib,cfg80211,drm
lshw -c multimedia
  *-multimedia:0
       description: Generic
       physical id: 0.1
       bus info: pci@0000:66:00.1
       logical name: card0
       logical name: /dev/snd/controlC0
       logical name: /dev/snd/hwC0D0
       logical name: /dev/snd/pcmC0D3p
       logical name: /dev/snd/pcmC0D7p
       version: 00
       width: 32 bits
       clock: 33MHz
       capabilities: pm pciexpress msi bus_master cap_list
       configuration: driver=snd_hda_intel latency=0
       resources: irq:113 memory:dd9c8000-dd9cbfff
  *-multimedia:1
       physical id: 0.5
       bus info: pci@0000:66:00.5
       version: 60
       width: 32 bits
       clock: 33MHz
       capabilities: pm pciexpress msi bus_master cap_list
       configuration: driver=snd_pci_acp6x latency=0
       resources: irq:44 memory:dd980000-dd9bffff
  *-multimedia:2
       description: Generic_1
       physical id: 0.6
       bus info: pci@0000:66:00.6
       logical name: card1
       logical name: /dev/snd/controlC1
       logical name: /dev/snd/hwC1D0
       logical name: /dev/snd/pcmC1D0c
       logical name: /dev/snd/pcmC1D0p
       version: 00
       width: 32 bits
       clock: 33MHz
       capabilities: pm pciexpress msi bus_master cap_list
       configuration: driver=snd_hda_intel latency=0
       resources: irq:114 memory:dd9c0000-dd9c7fff
  *-usb
       description: Video
       product: USB2.0 FHD UVC WebCam
       vendor: Sonix Technology Co., Ltd.
       physical id: 1
       bus info: usb@5:1
       version: 0.03
       capabilities: usb-2.01
       configuration: driver=uvcvideo maxpower=500mA speed=480Mbit/s
inxi -Azy
Audio:
  Device-1: AMD Rembrandt Radeon High Definition Audio driver: snd_hda_intel
  Device-2: AMD ACP/ACP3X/ACP6x Audio Coprocessor driver: snd_pci_acp6x
  Device-3: AMD Family 17h/19h HD Audio driver: snd_hda_intel
  Sound Server-1: ALSA v: k6.7.6 running: yes
  Sound Server-2: PipeWire v: 1.0.1 running: yes

Any and all help much appreciated!