Hello,
I just started to build my NixOS a few weeks ago (using Unstable repo), not ready yet to use it cuz I want to make sure I can configure all I need. I am on Garuda Arch at the moment.
I know the Nix language is quite a challenge for me to grasp, takes time but I learn everyday, that’s what counts!
I do have a lot of difficulties trying to setup my sound correctly. I have spent probably 15+ hours troubleshooting this and reading stuff. I have gathered a lot of information, so much that it may scare people if I post everything loll, but I have to show at least the most important stuff I did/found to get the ball rolling.
My expected result:
I am trying to enable IEC958/AC3 output as you can see here in my Arch installation (this shot is from Plasma System Settings/Audio).
This should enable something similar to the following list of Audio Devices in VLC:
What this does is it passes AC3 through S/PDIF by emulating stereo into 5.1 surround, so it uses all 6 speakers I got, for all sounds produced by the machine, not just the true recordings that are encoded in 5.1 (hence the emulator from stereo to 5.1).
lsof /dev/snd/*
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
pulseaudi 7490 frank 18u CHR 116,5 0t0 484 /dev/snd/controlC0
pulseaudi 7490 frank 23u CHR 116,5 0t0 484 /dev/snd/controlC0
pulseaudi 7490 frank 24u CHR 116,11 0t0 526 /dev/snd/controlC1
ps -e | grep pipewire
7027 ? 00:00:00 pipewire
pactl info
Server String: /run/user/1000/pulse/native
Library Protocol Version: 35
Server Protocol Version: 35
Is Local: yes
Client Index: 14
Tile Size: 65472
User Name: frank
Host Name: Garuda
Server Name: pulseaudio
Server Version: 16.1
Default Sample Specification: s16le 2ch 44100Hz
Default Channel Map: front-left,front-right
Default Sink: alsa_output.pci-0000_0c_00.4.iec958-ac3-surround-51
Default Source: alsa_output.pci-0000_0c_00.4.iec958-ac3-surround-51.monitor
Cookie: 4055:16a2
systemctl status | grep -E 'pipewire|pulseaudio|wireplumber'
│ ├─pipewire.service
│ │ └─7027 /usr/bin/pipewire
│ ├─pulseaudio.service
│ │ ├─7490 /usr/bin/pulseaudio --daemonize=no --log-target=journal
│ ├─wireplumber.service
│ │ └─7028 /usr/bin/wireplumber
This is really what I am trying to enable:
Default Sink: alsa_output.pci-0000_0c_00.4.iec958-ac3-surround-51
Default Source: alsa_output.pci-0000_0c_00.4.iec958-ac3-surround-51.monitor
What I do have in Nix right now:
sudo lsof /dev/snd/*
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
pipewire 1691 frank 49u CHR 116,1 0t0 541 /dev/snd/seq
pipewire 1691 frank 50u CHR 116,1 0t0 541 /dev/snd/seq
wireplumb 1694 frank 37u CHR 116,11 0t0 828 /dev/snd/controlC1
wireplumb 1694 frank 39u CHR 116,5 0t0 802 /dev/snd/controlC0
ps -e | grep pipewire
1760 ? 00:00:00 pipewire
2045 ? 00:00:00 pipewire-pulse
pactl info
Server String: /run/user/1000/pulse/native
Library Protocol Version: 35
Server Protocol Version: 35
Is Local: yes
Client Index: 69
Tile Size: 65472
User Name: frank
Host Name: Garuda
Server Name: PulseAudio (on PipeWire 0.3.74)
Server Version: 15.0.0
Default Sample Specification: float32le 2ch 48000Hz
Default Channel Map: front-left,front-right
Default Sink: alsa_output.pci-0000_0c_00.4.iec958-stereo
Default Source: alsa_output.pci-0000_0c_00.4.iec958-stereo.monitor
Cookie: 60db:241d
systemctl status | grep -E 'pipewire|pulseaudio|wireplumber'
│ │ └─3993 grep --color=auto -E "pipewire|pulseaudio|wireplumber"
├─pipewire-pulse.service
│ └─1939 /nix/store/9cnbzcws30p5b3r8cng5dzqdyhxyzmps-pipewire-0.3.74-pulse/bin/pipewire-pulse
├─pipewire.service
│ └─1697 /nix/store/jsajy583svnxjbfynfizhnn5aqwy7v61-pipewire-0.3.74/bin/pipewire
├─wireplumber.service
│ └─1701 /nix/store/vp3r1lq5vxdrbcgkvqdlpbsm4mbb3z9m-wireplumber-0.4.14/bin/wireplumber
pw-link -o
Midi-Bridge:Midi Through:(capture_0) Midi Through Port-0
alsa_output.pci-0000_0a_00.1.hdmi-stereo:monitor_FL
alsa_output.pci-0000_0a_00.1.hdmi-stereo:monitor_FR
alsa_output.pci-0000_0c_00.4.iec958-stereo:monitor_FL
alsa_output.pci-0000_0c_00.4.iec958-stereo:monitor_FR
grep Codec /proc/asound/card1/codec*
Codec: Realtek ALCS1200A
spa-acp-tool -c 1 lv
card 1: profiles:17 devices:12 ports:6
properties: (8)
use-ucm = "true"
verbose = "true"
alsa.card = "1"
alsa.card_name = "HD-Audio Generic"
alsa.long_card_name = "HD-Audio Generic at 0xfcb00000 irq 138"
alsa.driver_name = "snd_hda_intel"
device.string = "1"
device.description = "HD-Audio Generic"
profile 0: name:"off" prio:0 (available: yes)
description:"Off"
devices: (0)
profile 1: name:"output:analog-stereo+input:analog-stereo" prio:6565 (available: no)
description:"Analog Stereo Duplex"
devices: (2)
device 5: direction:playback name:"analog-stereo" prio:65 flags:00000000 devices: "front:%f"
* device 0: direction:capture name:"analog-stereo" prio:65 flags:00000007 devices: "front:%f"
profile 2: name:"output:analog-stereo" prio:6500 (available: no)
description:"Analog Stereo Output"
devices: (1)
device 5: direction:playback name:"analog-stereo" prio:65 flags:00000000 devices: "front:%f"
* profile 3: name:"output:iec958-stereo+input:analog-stereo" prio:5565 (available: yes)
description:"Digital Stereo (IEC958) Output + Analog Stereo Input"
devices: (2)
* device 11: direction:playback name:"iec958-stereo" prio:55 flags:00000015 devices: "iec958:%f"
* device 0: direction:capture name:"analog-stereo" prio:65 flags:00000007 devices: "front:%f"
profile 4: name:"output:iec958-stereo" prio:5500 (available: yes)
description:"Digital Stereo (IEC958) Output"
devices: (1)
* device 11: direction:playback name:"iec958-stereo" prio:55 flags:00000015 devices: "iec958:%f"
profile 5: name:"output:analog-surround-21+input:analog-stereo" prio:1365 (available: no)
description:"Analog Surround 2.1 Output + Analog Stereo Input"
devices: (2)
device 6: direction:playback name:"analog-surround-21" prio:13 flags:00000000 devices: "surround21:%f"
* device 0: direction:capture name:"analog-stereo" prio:65 flags:00000007 devices: "front:%f"
profile 6: name:"output:analog-surround-41+input:analog-stereo" prio:1365 (available: no)
description:"Analog Surround 4.1 Output + Analog Stereo Input"
devices: (2)
device 8: direction:playback name:"analog-surround-41" prio:13 flags:00000000 devices: "surround41:%f"
* device 0: direction:capture name:"analog-stereo" prio:65 flags:00000007 devices: "front:%f"
profile 7: name:"output:analog-surround-51+input:analog-stereo" prio:1365 (available: no)
description:"Analog Surround 5.1 Output + Analog Stereo Input"
devices: (2)
device 10: direction:playback name:"analog-surround-51" prio:13 flags:00000000 devices: "surround51:%f"
* device 0: direction:capture name:"analog-stereo" prio:65 flags:00000007 devices: "front:%f"
profile 8: name:"output:analog-surround-21" prio:1300 (available: no)
description:"Analog Surround 2.1 Output"
devices: (1)
device 6: direction:playback name:"analog-surround-21" prio:13 flags:00000000 devices: "surround21:%f"
profile 9: name:"output:analog-surround-41" prio:1300 (available: no)
description:"Analog Surround 4.1 Output"
devices: (1)
device 8: direction:playback name:"analog-surround-41" prio:13 flags:00000000 devices: "surround41:%f"
profile 10: name:"output:analog-surround-51" prio:1300 (available: no)
description:"Analog Surround 5.1 Output"
devices: (1)
device 10: direction:playback name:"analog-surround-51" prio:13 flags:00000000 devices: "surround51:%f"
profile 11: name:"output:analog-surround-40+input:analog-stereo" prio:1265 (available: no)
description:"Analog Surround 4.0 Output + Analog Stereo Input"
devices: (2)
device 7: direction:playback name:"analog-surround-40" prio:12 flags:00000000 devices: "surround40:%f"
* device 0: direction:capture name:"analog-stereo" prio:65 flags:00000007 devices: "front:%f"
profile 12: name:"output:analog-surround-50+input:analog-stereo" prio:1265 (available: no)
description:"Analog Surround 5.0 Output + Analog Stereo Input"
devices: (2)
device 9: direction:playback name:"analog-surround-50" prio:12 flags:00000000 devices: "surround50:%f"
* device 0: direction:capture name:"analog-stereo" prio:65 flags:00000007 devices: "front:%f"
profile 13: name:"output:analog-surround-40" prio:1200 (available: no)
description:"Analog Surround 4.0 Output"
devices: (1)
device 7: direction:playback name:"analog-surround-40" prio:12 flags:00000000 devices: "surround40:%f"
profile 14: name:"output:analog-surround-50" prio:1200 (available: no)
description:"Analog Surround 5.0 Output"
devices: (1)
device 9: direction:playback name:"analog-surround-50" prio:12 flags:00000000 devices: "surround50:%f"
profile 15: name:"input:analog-stereo" prio:65 (available: no)
description:"Analog Stereo Input"
devices: (1)
* device 0: direction:capture name:"analog-stereo" prio:65 flags:00000007 devices: "front:%f"
profile 16: name:"pro-audio" prio:1 (available: unknown)
description:"Pro Audio"
devices: (4)
device 1: direction:playback name:"pro-output-0" prio:0 flags:00000000 devices: "hw:1,0"
device 2: direction:playback name:"pro-output-1" prio:0 flags:00000000 devices: "hw:1,1"
device 3: direction:capture name:"pro-input-0" prio:0 flags:00000000 devices: "hw:1,0"
device 4: direction:capture name:"pro-input-2" prio:0 flags:00000000 devices: "hw:1,2"
* port 0: name:"analog-input-front-mic" direction:capture prio:8500 (available: no)
properties: (4)
port.type = "mic"
port.availability-group = "Legacy 1"
device.icon_name = "audio-input-microphone"
card.profile.port = "0"
profiles: (8)
profile 15: name:"input:analog-stereo" prio:65 (available: no)
profile 1: name:"output:analog-stereo+input:analog-stereo" prio:6565 (available: no)
profile 5: name:"output:analog-surround-21+input:analog-stereo" prio:1365 (available: no)
profile 11: name:"output:analog-surround-40+input:analog-stereo" prio:1265 (available: no)
profile 6: name:"output:analog-surround-41+input:analog-stereo" prio:1365 (available: no)
profile 12: name:"output:analog-surround-50+input:analog-stereo" prio:1265 (available: no)
profile 7: name:"output:analog-surround-51+input:analog-stereo" prio:1365 (available: no)
* profile 3: name:"output:iec958-stereo+input:analog-stereo" prio:5565 (available: yes)
devices: (1)
* device 0: direction:capture name:"analog-stereo" prio:65 flags:00000007 devices: "front:%f"
port 1: name:"analog-input-rear-mic" direction:capture prio:8200 (available: no)
properties: (4)
port.type = "mic"
port.availability-group = "Legacy 2"
device.icon_name = "audio-input-microphone"
card.profile.port = "1"
profiles: (8)
profile 15: name:"input:analog-stereo" prio:65 (available: no)
profile 1: name:"output:analog-stereo+input:analog-stereo" prio:6565 (available: no)
profile 5: name:"output:analog-surround-21+input:analog-stereo" prio:1365 (available: no)
profile 11: name:"output:analog-surround-40+input:analog-stereo" prio:1265 (available: no)
profile 6: name:"output:analog-surround-41+input:analog-stereo" prio:1365 (available: no)
profile 12: name:"output:analog-surround-50+input:analog-stereo" prio:1265 (available: no)
profile 7: name:"output:analog-surround-51+input:analog-stereo" prio:1365 (available: no)
* profile 3: name:"output:iec958-stereo+input:analog-stereo" prio:5565 (available: yes)
devices: (1)
* device 0: direction:capture name:"analog-stereo" prio:65 flags:00000007 devices: "front:%f"
port 2: name:"analog-input-linein" direction:capture prio:8100 (available: no)
properties: (3)
port.type = "line"
port.availability-group = "Legacy 3"
card.profile.port = "2"
profiles: (8)
profile 15: name:"input:analog-stereo" prio:65 (available: no)
profile 1: name:"output:analog-stereo+input:analog-stereo" prio:6565 (available: no)
profile 5: name:"output:analog-surround-21+input:analog-stereo" prio:1365 (available: no)
profile 11: name:"output:analog-surround-40+input:analog-stereo" prio:1265 (available: no)
profile 6: name:"output:analog-surround-41+input:analog-stereo" prio:1365 (available: no)
profile 12: name:"output:analog-surround-50+input:analog-stereo" prio:1265 (available: no)
profile 7: name:"output:analog-surround-51+input:analog-stereo" prio:1365 (available: no)
* profile 3: name:"output:iec958-stereo+input:analog-stereo" prio:5565 (available: yes)
devices: (1)
* device 0: direction:capture name:"analog-stereo" prio:65 flags:00000007 devices: "front:%f"
port 3: name:"analog-output-lineout" direction:playback prio:9000 (available: no)
properties: (3)
port.type = "line"
port.availability-group = "Legacy 4"
card.profile.port = "3"
profiles: (12)
profile 2: name:"output:analog-stereo" prio:6500 (available: no)
profile 1: name:"output:analog-stereo+input:analog-stereo" prio:6565 (available: no)
profile 8: name:"output:analog-surround-21" prio:1300 (available: no)
profile 5: name:"output:analog-surround-21+input:analog-stereo" prio:1365 (available: no)
profile 13: name:"output:analog-surround-40" prio:1200 (available: no)
profile 11: name:"output:analog-surround-40+input:analog-stereo" prio:1265 (available: no)
profile 9: name:"output:analog-surround-41" prio:1300 (available: no)
profile 6: name:"output:analog-surround-41+input:analog-stereo" prio:1365 (available: no)
profile 14: name:"output:analog-surround-50" prio:1200 (available: no)
profile 12: name:"output:analog-surround-50+input:analog-stereo" prio:1265 (available: no)
profile 10: name:"output:analog-surround-51" prio:1300 (available: no)
profile 7: name:"output:analog-surround-51+input:analog-stereo" prio:1365 (available: no)
devices: (6)
device 5: direction:playback name:"analog-stereo" prio:65 flags:00000000 devices: "front:%f"
device 6: direction:playback name:"analog-surround-21" prio:13 flags:00000000 devices: "surround21:%f"
device 7: direction:playback name:"analog-surround-40" prio:12 flags:00000000 devices: "surround40:%f"
device 8: direction:playback name:"analog-surround-41" prio:13 flags:00000000 devices: "surround41:%f"
device 9: direction:playback name:"analog-surround-50" prio:12 flags:00000000 devices: "surround50:%f"
device 10: direction:playback name:"analog-surround-51" prio:13 flags:00000000 devices: "surround51:%f"
port 4: name:"analog-output-headphones" direction:playback prio:9900 (available: no)
properties: (4)
port.type = "headphones"
port.availability-group = "Legacy 5"
device.icon_name = "audio-headphones"
card.profile.port = "4"
profiles: (2)
profile 2: name:"output:analog-stereo" prio:6500 (available: no)
profile 1: name:"output:analog-stereo+input:analog-stereo" prio:6565 (available: no)
devices: (1)
device 5: direction:playback name:"analog-stereo" prio:65 flags:00000000 devices: "front:%f"
* port 5: name:"iec958-stereo-output" direction:playback prio:0 (available: unknown)
properties: (2)
port.type = "spdif"
card.profile.port = "5"
profiles: (2)
profile 4: name:"output:iec958-stereo" prio:5500 (available: yes)
* profile 3: name:"output:iec958-stereo+input:analog-stereo" prio:5565 (available: yes)
devices: (1)
* device 11: direction:playback name:"iec958-stereo" prio:55 flags:00000015 devices: "iec958:%f"
* device 0: direction:capture name:"analog-stereo" prio:65 flags:00000007 devices: "front:%f"
rate:0 channels:2
properties: (17)
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALCS1200A Analog"
alsa.id = "ALCS1200A Analog"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "1"
alsa.card_name = "HD-Audio Generic"
alsa.long_card_name = "HD-Audio Generic at 0xfcb00000 irq 138"
alsa.driver_name = "snd_hda_intel"
device.profile.name = "analog-stereo"
device.profile.description = "Analog Stereo"
card.profile.device = "0"
ports: (3)
* port 0: name:"analog-input-front-mic" direction:capture prio:8500 (available: no)
port 1: name:"analog-input-rear-mic" direction:capture prio:8200 (available: no)
port 2: name:"analog-input-linein" direction:capture prio:8100 (available: no)
device 1: direction:playback name:"pro-output-0" prio:0 flags:00000000 devices: "hw:1,0"
rate:48000 channels:6
properties: (18)
alsa.resolution_bits = "32"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALCS1200A Analog"
alsa.id = "ALCS1200A Analog"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "1"
alsa.card_name = "HD-Audio Generic"
alsa.long_card_name = "HD-Audio Generic at 0xfcb00000 irq 138"
alsa.driver_name = "snd_hda_intel"
clock.name = "api.alsa.1"
device.profile.name = "pro-output-0"
device.profile.description = "Pro"
card.profile.device = "1"
ports: (0)
device 2: direction:playback name:"pro-output-1" prio:0 flags:00000000 devices: "hw:1,1"
rate:48000 channels:2
properties: (18)
alsa.resolution_bits = "32"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALCS1200A Digital"
alsa.id = "ALCS1200A Digital"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "1"
alsa.card = "1"
alsa.card_name = "HD-Audio Generic"
alsa.long_card_name = "HD-Audio Generic at 0xfcb00000 irq 138"
alsa.driver_name = "snd_hda_intel"
clock.name = "api.alsa.1"
device.profile.name = "pro-output-1"
device.profile.description = "Pro 1"
card.profile.device = "2"
ports: (0)
device 3: direction:capture name:"pro-input-0" prio:0 flags:00000000 devices: "hw:1,0"
rate:48000 channels:2
properties: (18)
alsa.resolution_bits = "32"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALCS1200A Analog"
alsa.id = "ALCS1200A Analog"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "1"
alsa.card_name = "HD-Audio Generic"
alsa.long_card_name = "HD-Audio Generic at 0xfcb00000 irq 138"
alsa.driver_name = "snd_hda_intel"
clock.name = "api.alsa.1"
device.profile.name = "pro-input-0"
device.profile.description = "Pro"
card.profile.device = "3"
ports: (0)
device 4: direction:capture name:"pro-input-2" prio:0 flags:00000000 devices: "hw:1,2"
rate:48000 channels:2
properties: (18)
alsa.resolution_bits = "32"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALCS1200A Alt Analog"
alsa.id = "ALCS1200A Alt Analog"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "2"
alsa.card = "1"
alsa.card_name = "HD-Audio Generic"
alsa.long_card_name = "HD-Audio Generic at 0xfcb00000 irq 138"
alsa.driver_name = "snd_hda_intel"
clock.name = "api.alsa.1"
device.profile.name = "pro-input-2"
device.profile.description = "Pro 2"
card.profile.device = "4"
ports: (0)
device 5: direction:playback name:"analog-stereo" prio:65 flags:00000000 devices: "front:%f"
rate:0 channels:2
properties: (17)
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALCS1200A Analog"
alsa.id = "ALCS1200A Analog"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "1"
alsa.card_name = "HD-Audio Generic"
alsa.long_card_name = "HD-Audio Generic at 0xfcb00000 irq 138"
alsa.driver_name = "snd_hda_intel"
device.profile.name = "analog-stereo"
device.profile.description = "Analog Stereo"
card.profile.device = "5"
ports: (2)
port 3: name:"analog-output-lineout" direction:playback prio:9000 (available: no)
port 4: name:"analog-output-headphones" direction:playback prio:9900 (available: no)
device 6: direction:playback name:"analog-surround-21" prio:13 flags:00000000 devices: "surround21:%f"
rate:0 channels:3
properties: (17)
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALCS1200A Analog"
alsa.id = "ALCS1200A Analog"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "1"
alsa.card_name = "HD-Audio Generic"
alsa.long_card_name = "HD-Audio Generic at 0xfcb00000 irq 138"
alsa.driver_name = "snd_hda_intel"
device.profile.name = "analog-surround-21"
device.profile.description = "Analog Surround 2.1"
card.profile.device = "6"
ports: (1)
port 3: name:"analog-output-lineout" direction:playback prio:9000 (available: no)
device 7: direction:playback name:"analog-surround-40" prio:12 flags:00000000 devices: "surround40:%f"
rate:0 channels:4
properties: (17)
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALCS1200A Analog"
alsa.id = "ALCS1200A Analog"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "1"
alsa.card_name = "HD-Audio Generic"
alsa.long_card_name = "HD-Audio Generic at 0xfcb00000 irq 138"
alsa.driver_name = "snd_hda_intel"
device.profile.name = "analog-surround-40"
device.profile.description = "Analog Surround 4.0"
card.profile.device = "7"
ports: (1)
port 3: name:"analog-output-lineout" direction:playback prio:9000 (available: no)
device 8: direction:playback name:"analog-surround-41" prio:13 flags:00000000 devices: "surround41:%f"
rate:0 channels:5
properties: (17)
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALCS1200A Analog"
alsa.id = "ALCS1200A Analog"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "1"
alsa.card_name = "HD-Audio Generic"
alsa.long_card_name = "HD-Audio Generic at 0xfcb00000 irq 138"
alsa.driver_name = "snd_hda_intel"
device.profile.name = "analog-surround-41"
device.profile.description = "Analog Surround 4.1"
card.profile.device = "8"
ports: (1)
port 3: name:"analog-output-lineout" direction:playback prio:9000 (available: no)
device 9: direction:playback name:"analog-surround-50" prio:12 flags:00000000 devices: "surround50:%f"
rate:0 channels:5
properties: (17)
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALCS1200A Analog"
alsa.id = "ALCS1200A Analog"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "1"
alsa.card_name = "HD-Audio Generic"
alsa.long_card_name = "HD-Audio Generic at 0xfcb00000 irq 138"
alsa.driver_name = "snd_hda_intel"
device.profile.name = "analog-surround-50"
device.profile.description = "Analog Surround 5.0"
card.profile.device = "9"
ports: (1)
port 3: name:"analog-output-lineout" direction:playback prio:9000 (available: no)
device 10: direction:playback name:"analog-surround-51" prio:13 flags:00000000 devices: "surround51:%f"
rate:0 channels:6
properties: (17)
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALCS1200A Analog"
alsa.id = "ALCS1200A Analog"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "1"
alsa.card_name = "HD-Audio Generic"
alsa.long_card_name = "HD-Audio Generic at 0xfcb00000 irq 138"
alsa.driver_name = "snd_hda_intel"
device.profile.name = "analog-surround-51"
device.profile.description = "Analog Surround 5.1"
card.profile.device = "10"
ports: (1)
port 3: name:"analog-output-lineout" direction:playback prio:9000 (available: no)
* device 11: direction:playback name:"iec958-stereo" prio:55 flags:00000015 devices: "iec958:%f"
rate:0 channels:2
properties: (17)
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALCS1200A Digital"
alsa.id = "ALCS1200A Digital"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "1"
alsa.card = "1"
alsa.card_name = "HD-Audio Generic"
alsa.long_card_name = "HD-Audio Generic at 0xfcb00000 irq 138"
alsa.driver_name = "snd_hda_intel"
device.profile.name = "iec958-stereo"
device.profile.description = "Digital Stereo (IEC958)"
card.profile.device = "11"
ports: (1)
* port 5: name:"iec958-stereo-output" direction:playback prio:0 (available: unknown)
This is what is missing the AC3:
Default Sink: alsa_output.pci-0000_0c_00.4.iec958-stereo
Default Source: alsa_output.pci-0000_0c_00.4.iec958-stereo.monitor
What I believe is I don’t have the proper alsa-card-profile in Nix. I am able to locate all the alsa .conf files in Arch, including some that have “ac3” in them, but I think in Nix all those profiles are built-in pipewire or wireplumber or something.
Maybe I need to patch one of those packages (or alsa itself, I don’t know) in my config.nix.
But that’s my problem, I have no idea what code to use, where to patch it (IF a patch is required) and how to patch it.
I have installed all the Codec packages I could find in Nix repo that match the ones I got in Arch:
Audio/Video codecs in Nix
ffmpegthumbnailer
libdvdcss
libdv
libdvdread
gst_all_1.gstreamer
gst_all_1.gst-vaapi
gst_all_1.gst-plugins-ugly
gst_all_1.gst-plugins-good
gst_all_1.gst-plugins-bad
gst_all_1.gst-plugins-base
apulse
alsa-plugins
alsa-lib
alsa-firmware
alsa-plugins-wrapper
alsa-topology-conf
alsa-ucm-conf
faac
ffmpeg_6-full
ffmpeg_4-full
ffmpeg
pavucontrol
libsForQt5.ffmpegthumbs
gst_all_1.gst-libav
flac
faad2
libaom
libavif
libva
libva1
libva-utils
libavc1394
libbluray
libde265
libsForQt5.phonon
libsForQt5.phonon-backend-gstreamer
libsForQt5.phonon-backend-vlc
vaapiVdpau
aribb25
a52dec
brotli
l-smash
lame
fdk-aac-encoder
libiec61883
libmad
libmpeg2
libtheora
apulse
libsForQt5.pulseaudio-qt
pulseaudioFull
libpulseaudio
libsForQt5.kpipewire
rtkit
svt-av1
v4l-utils
x264
x265
xvidcore
zita-resampler
zita-alsa-pcmi
I have kept many URLs I tried to understand:
Web sites visited
PulseAudio - NixOS Wiki
PipeWire - NixOS Wiki
WirePlumber - ArchWiki
Wireplumber completely broke audio and video playback · Issue #163066 · NixOS/nixpkgs · GitHub
pulse/alsa: No output devices detected since last update · Issue #128925 · NixOS/nixpkgs · GitHub
Asus UX390 add a pulseaudio configuration - #4 by hmenke
Pipewire does not recognize my 4.1 sound system (#2023) · Issues · PipeWire / pipewire · GitLab
No input devices available · Issue #80960 · NixOS/nixpkgs · GitHub
PipeWire status tracking issue · Issue #102547 · NixOS/nixpkgs · GitHub
ALSA configuration — WirePlumber 0.4.14 documentation
FAQ · Wiki · PipeWire / pipewire · GitLab
I usually never run out of ideas when it comes to troubleshooting and testing stuff, but on this one I have…
Any ideas what else I can try?
Thanks!!
