USB sound card discovered at system boot about 50 percent of the time

Support & Help Requests
1

The subject pretty much says it all. The sound card is connected directly to a computer USB port. Here is the output:

$ pw-cli ls Node
id 29, type PipeWire:Interface:Node/3
object.serial = "29"
factory.id = "10"
priority.driver = "20000"
node.name = "Dummy-Driver"
id 30, type PipeWire:Interface:Node/3
object.serial = "30"
factory.id = "10"
priority.driver = "19000"
node.name = "Freewheel-Driver"
id 33, type PipeWire:Interface:Node/3
object.serial = "52"
object.path = "alsa:pcm:0:front:0:playback"
factory.id = "18"
client.id = "35"
device.id = "45"
priority.session = "1009"
priority.driver = "1009"
node.description = "Built-in Audio Analog Stereo"
node.name = "alsa_output.pci-0000_00_1f.3.analog-stereo"
node.nick = "CX20632 Analog"
media.class = "Audio/Sink"
id 39, type PipeWire:Interface:Node/3
object.serial = "39"
factory.id = "10"
client.id = "35"
priority.session = "100"
priority.driver = "1"
node.name = "Midi-Bridge"
media.class = "Midi/Bridge"
id 49, type PipeWire:Interface:Node/3
object.serial = "53"
object.path = "alsa:pcm:0:front:0:capture"
factory.id = "18"
client.id = "35"
device.id = "45"
priority.session = "2009"
priority.driver = "2009"
node.description = "Built-in Audio Analog Stereo"
node.name = "alsa_input.pci-0000_00_1f.3.analog-stereo"
node.nick = "CX20632 Analog"
media.class = "Audio/Source"
id 50, type PipeWire:Interface:Node/3
object.serial = "50"
object.path = "alsa:pcm:1:surround40:1:playback"
factory.id = "18"
client.id = "35"
device.id = "44"
priority.session = "1009"
priority.driver = "1009"
node.description = "UMC404HD 192k Analog Surround 4.0"
node.name = "alsa_output.usb-BEHRINGER_UMC404HD_192k-00.analog-surround-40"
node.nick = "UMC404HD 192k"
media.class = "Audio/Sink"
id 51, type PipeWire:Interface:Node/3
object.serial = "51"
object.path = "alsa:pcm:1:surround40:1:capture"
factory.id = "18"
client.id = "35"
device.id = "44"
priority.session = "2009"
priority.driver = "2009"
node.description = "UMC404HD 192k Analog Surround 4.0"
node.name = "alsa_input.usb-BEHRINGER_UMC404HD_192k-00.analog-surround-40"
node.nick = "UMC404HD 192k"
media.class = "Audio/Source"

Any ideas would be appreciated.

1 Like
2

It would help to have info about your setup.

Please share the output from the following:

lsb_release -a

inxi -SMCADxxx
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3

Sorry.

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 24.04.4 LTS
Release:        24.04
Codename:       noble

$ inxi -SMCADxxx
System:
Kernel: 6.17.0-19-generic arch: x86_64 bits: 64 compiler: gcc
v: 13.3.0 clocksource: tsc
Desktop: MATE v: 1.26.2 wm: marco v: 1.26.2 with: mate-panel
tools: mate-screensaver vt: 7 dm: LightDM v: 1.30.0 Distro: MATE 24.04.4
LTS (Noble Numbat) base: Ubuntu
Machine:
Type: Desktop System: HP product: HP EliteDesk 800 G5 Desktop Mini v: SBKPF
serial:  Chassis: type: 6 serial: 
Mobo: HP model: 8594 v: KBC Version 08.09.21 serial: 
part-nu: 9GB06UC#ABA uuid:  UEFI: HP
v: R21 Ver. 02.21.01 date: 08/30/2024
CPU:
Info: 8-core model: Intel Core i7-9700 bits: 64 type: MCP smt: 
arch: Coffee Lake rev: D cache: L1: 512 KiB L2: 2 MiB L3: 12 MiB
Speed (MHz): avg: 814 high: 912 min/max: 800/4700 cores: 1: 800 2: 800
3: 800 4: 800 5: 800 6: 912 7: 800 8: 800 bogomips: 48000
Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
Audio:
Device-1: Intel Cannon Lake PCH cAVS vendor: Hewlett-Packard
driver: snd_hda_intel v: kernel bus-ID: 00:1f.3 chip-ID: 8086:a348
class-ID: 0403
Device-2: BEHRINGER GmbH UMC404HD 192k driver: snd-usb-audio type: USB
rev: 2.0 speed: 480 Mb/s lanes: 1 bus-ID: 1-5:4 chip-ID: 1397:0509
class-ID: 0103
API: ALSA v: k6.17.0-19-generic status: kernel-api
Server-1: PipeWire v: 1.0.5 status: active with: 1: pipewire-pulse
status: active 2: wireplumber status: active
Drives:
Local Storage: total: 471.36 GiB used: 18.42 GiB (3.9%)
ID-1: /dev/nvme0n1 vendor: Toshiba model: N/A size: 238.47 GiB
speed: 31.6 Gb/s lanes: 4 tech: SSD serial: 38HF70MZF6FS fw-rev: AAHA4102
temp: 26.9 C scheme: GPT
ID-2: /dev/nvme1n1 vendor: Samsung model: SSD 970 EVO Plus 250GB
size: 232.89 GiB speed: 31.6 Gb/s lanes: 4 tech: SSD serial: S4EUNX0T115415R
fw-rev: 2B2QEXM7 temp: 32.9 C scheme: GPT
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