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#1 2025-05-17 20:08:36
- gh4ever
- Member
- Registered: 2010-12-14
- Posts: 2
Pipewire + Nvidia only outputs audio on first device
I just set up Arch on a new PC and am having a strange issue with audio through my Nvidia GPU. The GPU has three monitors attached, and I would like audio to play through one of them.
pavucontrol sees "Digital Stereo (HDMI x) Output" for x=1,2,3, as various profiles for the HDA NVidia card. I would like audio to play on the HDMI 2 output. However, regardless of which profile I choose, audio only plays to a single, fixed monitor (HDMI 1). If I unplug monitors 1 and 3, audio is correctly routed to HDMI 2. This is still true when I plug back in monitors 1 and 3. Once again, though, regardless of which profile I pick in pavucontrol, audio will only be routed through (now) HDMI 2. This same behavior is reproduced by disabling monitors 1 and 3 through Gnome's display settings. Running
speaker-test -D hdmi:1,1 -c 2 --test wavcorrectly outputs audio to HDMI 2, even before I do the whole rigamarole of disabling monitors 1 and 3. I'll also note that this post over on the Fedora forums seems to describe the exact same problem that I'm encountering, though when I choose the Pro Audio profile in pavucontrol (their proposed solution) I get no sound at all (regardless of whether I've unplugged monitors 1 and 3).
Here are the relevant parts of the outputs of some relevant commands. They were run with HDMI 2 as the profile set in pavucontrol and Gnome's settings, before I disabled monitors 1 and 3. The outputs are identical after disabling/renabling monitors 1 and 3, however (up to some changed sink #s, etc.).
$ pactl list sinks
Sink #362
State: IDLE
Name: alsa_output.pci-0000_01_00.1.hdmi-stereo-extra1
Description: HDA NVidia Digital Stereo (HDMI 2)
Driver: PipeWire
Sample Specification: s32le 2ch 48000Hz
Channel Map: front-left,front-right
Owner Module: 4294967295
Mute: no
Volume: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% / 0.00 dB
balance 0.00
Base Volume: 65536 / 100% / 0.00 dB
Monitor Source: alsa_output.pci-0000_01_00.1.hdmi-stereo-extra1.monitor
Latency: 0 usec, configured 0 usec
Flags: HARDWARE DECIBEL_VOLUME LATENCY SET_FORMATS
Properties:
alsa.card = "1"
alsa.card_name = "HDA NVidia"
alsa.class = "generic"
alsa.components = "HDA:10de00ab,10de0000,00100100"
alsa.device = "7"
alsa.driver_name = "snd_hda_intel"
alsa.id = "HDMI 1"
alsa.long_card_name = "HDA NVidia at 0x88080000 irq 17"
alsa.mixer_name = "Nvidia Generic HDMI"
alsa.name = "NS39DF510NA19"
alsa.resolution_bits = "16"
alsa.subclass = "generic-mix"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.sync.id = "00000000:00000000:00000000:00000000"
api.alsa.card.longname = "HDA NVidia at 0x88080000 irq 17"
api.alsa.card.name = "HDA NVidia"
api.alsa.path = "hdmi:1,1"
api.alsa.pcm.card = "1"
api.alsa.pcm.stream = "playback"
audio.channels = "2"
audio.position = "FL,FR"
card.profile.device = "5"
device.api = "alsa"
device.class = "sound"
device.icon_name = "audio-card-analog"
device.id = "53"
device.profile.description = "Digital Stereo (HDMI 2)"
device.profile.name = "hdmi-stereo-extra1"
device.routes = "1"
factory.name = "api.alsa.pcm.sink"
iec958.codecs = "[\"PCM\",\"AC3\",\"EAC3\"]"
media.class = "Audio/Sink"
device.description = "HDA NVidia"
node.name = "alsa_output.pci-0000_01_00.1.hdmi-stereo-extra1"
node.nick = "NS39DF510NA19"
node.pause-on-idle = "false"
object.path = "alsa:acp:NVidia:5:playback"
port.group = "playback"
priority.driver = "632"
priority.session = "632"
factory.id = "19"
clock.quantum-limit = "8192"
client.id = "47"
node.driver = "true"
node.loop.name = "data-loop.0"
library.name = "audioconvert/libspa-audioconvert"
object.id = "111"
object.serial = "362"
node.max-latency = "16384/48000"
api.alsa.period-size = "1024"
api.alsa.period-num = "32"
api.alsa.headroom = "0"
api.acp.auto-port = "false"
api.acp.auto-profile = "false"
api.alsa.card = "1"
api.alsa.split-enable = "true"
api.alsa.use-acp = "true"
api.dbus.ReserveDevice1 = "Audio1"
api.dbus.ReserveDevice1.Priority = "-20"
device.bus = "pci"
device.bus_path = "pci-0000:01:00.1"
device.enum.api = "udev"
device.name = "alsa_card.pci-0000_01_00.1"
device.nick = "HDA NVidia"
device.plugged.usec = "5662275"
device.product.id = "0x22e9"
device.subsystem = "sound"
sysfs.path = "/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1"
device.vendor.id = "0x10de"
device.vendor.name = "NVIDIA Corporation"
spa.object.id = "4"
device.string = "1"
Ports:
hdmi-output-1: HDMI / DisplayPort 2 (type: HDMI, priority: 5800, availability group: Legacy 2, available)
Active Port: hdmi-output-1
Formats:
pcm
ac3-iec61937, format.rate = "{ \"min\": 32000, \"max\": 48000 }"$ wpctl status
PipeWire 'pipewire-0'
Audio
├─ Devices:
│ 53. HDA NVidia [alsa]
│ 54. Yeti Stereo Microphone [alsa]
│ 55. USB Camera [alsa]
│ 56. USB Audio [alsa]
│ 57. Built-in Audio [alsa]
│
├─ Sinks:
│ 38. Yeti Stereo Microphone Analog Stereo [vol: 0.00]
│ 43. USB Audio Front Headphones [vol: 1.00]
│ 45. USB Audio S/PDIF Output [vol: 1.00]
│ 67. USB Audio Speakers [vol: 1.00]
│ * 111. HDA NVidia Digital Stereo (HDMI 2) [vol: 1.00]
│
├─ Sources:
│ 44. USB Camera Analog Stereo [vol: 1.00]
│ * 46. Yeti Stereo Microphone Analog Stereo [vol: 1.00]
│ 68. USB Audio Microphone [vol: 1.00]
│ 69. USB Audio Line Input [vol: 1.00]
│
├─ Filters:
│
└─ Streams:
Video
├─ Devices:
│ 65. USB Camera [v4l2]
│ 66. USB Camera [v4l2]
│
├─ Sinks:
│
├─ Sources:
│ * 98. USB Camera (V4L2)
│
├─ Filters:
│
└─ Streams:
Settings
└─ Default Configured Devices:
0. Audio/Sink alsa_output.pci-0000_01_00.1.hdmi-stereo-extra1
1. Audio/Source alsa_input.usb-Blue_Microphones_Yeti_Stereo_Microphone_REV8-00.analog-stereo$ sudo fuser -v /dev/snd/*
USER PID ACCESS COMMAND
/dev/snd/controlC0: (username) 1968 F.... wireplumber
/dev/snd/controlC1: (username) 1968 F.... wireplumber
/dev/snd/controlC2: (username) 1968 F.... wireplumber
/dev/snd/controlC3: (username) 1967 F.... pipewire
(username) 1968 F.... wireplumber
/dev/snd/controlC4: (username) 1968 F.... wireplumber
/dev/snd/seq: (username) 1967 F.... pipewireOffline