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Void_Walker

Member

Registered: 2009-06-17

Posts: 53

Misterious audio loopback device

Hello there!

I have no real idea what is going on, but I have this weird issue. It occurs when I am calling while gaming or watching video. (Regardless whichever starts first.) The other call participants can hear my audio as if I was streaming. Which I am not aware of doing. (Nor is it intentional.)
At first I though that it might be a bad contact in my headset or simple echo, but then I noticed that the microphone seems to be picking up the audio I am playing, so I disconnected the microphone(removed the mic from the headset, disconnected the cable from the back of my PC). For an unknown reason it continued to pick up the audio still.   

I am using pulseuadio with the current linux kernel on ACL1220.

If there is any information that could help you helping me, please ask. I have no idea what I could provide that would help anybody debug my issue. I sup[pose I can say I am a noob in terms of configuring audio.
Thank for your patience and help.

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 21,743

Re: Misterious audio loopback device

aplay -l
amixer -c0 #Or whatever's the index of the correct card
pacmd list-cards
#During the issue
sudo fuser -v /dev/snd/*
pacmd list-sources
pacmd list-source-outputs

post these in [ code ] [ /code ] tags without the spaces.

Last edited by V1del (2020-05-04 13:23:53)

Roken

Member

From: South Wales, UK

Registered: 2012-01-16

Posts: 1,253

Re: Misterious audio loopback device

Do you have a webcam with a mic?

---

Ryzen 5900X 12 core/24 thread - RTX 3090 FE 24 Gb, Asus Prime B450 Plus, 32Gb Corsair DDR4, Cooler Master N300 chassis, 5 HD (1 NvME PCI, 4SSD) + 1 x optical.
Linux user #545703

Void_Walker

Member

Registered: 2009-06-17

Posts: 53

Re: Misterious audio loopback device

The result for aplay -l

void@shodan ~ $ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: HDMI [HDA ATI HDMI], device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: HDMI [HDA ATI HDMI], device 8: HDMI 2 [HDMI 2]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: HDMI [HDA ATI HDMI], device 9: HDMI 3 [HDMI 3]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: HDMI [HDA ATI HDMI], device 10: HDMI 4 [HDMI 4]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: HDMI [HDA ATI HDMI], device 11: HDMI 5 [HDMI 5]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 1: Generic [HD-Audio Generic], device 0: ALC1220 Analog [ALC1220 Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 1: Generic [HD-Audio Generic], device 1: ALC1220 Digital [ALC1220 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

The result for amixer -c1

void@shodan ~ $ amixer -c1
Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 87
  Mono: Playback 87 [100%] [0.00dB] [on]
Simple mixer control 'Headphone',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 87
  Mono:
  Front Left: Playback 0 [0%] [-65.25dB] [off]
  Front Right: Playback 0 [0%] [-65.25dB] [off]
Simple mixer control 'PCM',0
  Capabilities: pvolume
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 255 [100%] [0.00dB]
  Front Right: Playback 255 [100%] [0.00dB]
Simple mixer control 'Front',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 87
  Mono:
  Front Left: Playback 87 [100%] [0.00dB] [on]
  Front Right: Playback 87 [100%] [0.00dB] [on]
Simple mixer control 'Front Mic',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Front Mic Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 0 [0%] [0.00dB]
  Front Right: 0 [0%] [0.00dB]
Simple mixer control 'Surround',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 87
  Mono:
  Front Left: Playback 87 [100%] [0.00dB] [on]
  Front Right: Playback 87 [100%] [0.00dB] [on]
Simple mixer control 'Center',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 87
  Mono: Playback 87 [100%] [0.00dB] [on]
Simple mixer control 'LFE',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 87
  Mono: Playback 87 [100%] [0.00dB] [on]
Simple mixer control 'Line',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Line Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 0 [0%] [0.00dB]
  Front Right: 0 [0%] [0.00dB]
Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'IEC958 Default PCM',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 63
  Front Left: Capture 63 [100%] [30.00dB] [on]
  Front Right: Capture 63 [100%] [30.00dB] [on]
Simple mixer control 'Capture',1
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 63
  Front Left: Capture 0 [0%] [-17.25dB] [off]
  Front Right: Capture 0 [0%] [-17.25dB] [off]
Simple mixer control 'Auto-Mute Mode',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Enabled'
Simple mixer control 'Input Source',0
  Capabilities: cenum
  Items: 'Front Mic' 'Rear Mic' 'Line'
  Item0: 'Rear Mic'
Simple mixer control 'Input Source',1
  Capabilities: cenum
  Items: 'Front Mic' 'Rear Mic' 'Line'
  Item0: 'Front Mic'
Simple mixer control 'Loopback Mixing',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Disabled'
Simple mixer control 'Rear Mic',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 28 [90%] [7.50dB] [on]
  Front Right: Playback 28 [90%] [7.50dB] [on]
Simple mixer control 'Rear Mic Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 1 [33%] [10.00dB]
  Front Right: 1 [33%] [10.00dB]

the c0

void@shodan ~ $ amixer -c0
Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',1
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',2
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',3
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',4
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',5
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]

pacmd list-cards

void@shodan ~ $ pacmd list-cards
2 card(s) available.
    index: 0
	name: <alsa_card.pci-0000_30_00.1>
	driver: <module-alsa-card.c>
	owner module: 6
	properties:
		alsa.card = "0"
		alsa.card_name = "HDA ATI HDMI"
		alsa.long_card_name = "HDA ATI HDMI at 0xf7ba0000 irq 77"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:30:00.1"
		sysfs.path = "/devices/pci0000:00/0000:00:03.1/0000:2e:00.0/0000:2f:00.0/0000:30:00.1/sound/card0"
		device.bus = "pci"
		device.vendor.id = "1002"
		device.vendor.name = "Advanced Micro Devices, Inc. [AMD/ATI]"
		device.product.id = "aaf8"
		device.product.name = "Vega 10 HDMI Audio [Radeon Vega 56/64]"
		device.string = "0"
		device.description = "Vega 10 HDMI Audio [Radeon Vega 56/64]"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	profiles:
		output:hdmi-stereo: Digital Stereo (HDMI) Output (priority 5900, available: no)
		output:hdmi-surround: Digital Surround 5.1 (HDMI) Output (priority 800, available: no)
		output:hdmi-surround71: Digital Surround 7.1 (HDMI) Output (priority 800, available: no)
		output:hdmi-stereo-extra1: Digital Stereo (HDMI 2) Output (priority 5700, available: no)
		output:hdmi-surround-extra1: Digital Surround 5.1 (HDMI 2) Output (priority 600, available: no)
		output:hdmi-surround71-extra1: Digital Surround 7.1 (HDMI 2) Output (priority 600, available: no)
		output:hdmi-stereo-extra2: Digital Stereo (HDMI 3) Output (priority 5700, available: no)
		output:hdmi-surround-extra2: Digital Surround 5.1 (HDMI 3) Output (priority 600, available: no)
		output:hdmi-surround71-extra2: Digital Surround 7.1 (HDMI 3) Output (priority 600, available: no)
		output:hdmi-stereo-extra3: Digital Stereo (HDMI 4) Output (priority 5700, available: no)
		output:hdmi-surround-extra3: Digital Surround 5.1 (HDMI 4) Output (priority 600, available: no)
		output:hdmi-surround71-extra3: Digital Surround 7.1 (HDMI 4) Output (priority 600, available: no)
		output:hdmi-stereo-extra4: Digital Stereo (HDMI 5) Output (priority 5700, available: no)
		output:hdmi-surround-extra4: Digital Surround 5.1 (HDMI 5) Output (priority 600, available: no)
		output:hdmi-surround71-extra4: Digital Surround 7.1 (HDMI 5) Output (priority 600, available: no)
		output:hdmi-stereo-extra5: Digital Stereo (HDMI 6) Output (priority 5700, available: unknown)
		off: Off (priority 0, available: unknown)
	active profile: <output:hdmi-stereo-extra5>
	sinks:
		alsa_output.pci-0000_30_00.1.hdmi-stereo-extra5/#0: Vega 10 HDMI Audio [Radeon Vega 56/64] Digital Stereo (HDMI 6)
	sources:
		alsa_output.pci-0000_30_00.1.hdmi-stereo-extra5.monitor/#0: Monitor of Vega 10 HDMI Audio [Radeon Vega 56/64] Digital Stereo (HDMI 6)
	ports:
		hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "video-display"
		hdmi-output-1: HDMI / DisplayPort 2 (priority 5800, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "video-display"
		hdmi-output-2: HDMI / DisplayPort 3 (priority 5700, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "video-display"
		hdmi-output-3: HDMI / DisplayPort 4 (priority 5600, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "video-display"
		hdmi-output-4: HDMI / DisplayPort 5 (priority 5500, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "video-display"
		hdmi-output-5: HDMI / DisplayPort 6 (priority 5400, latency offset 0 usec, available: yes)
			properties:
				device.icon_name = "video-display"
				device.product.name = "Q3279WG5B"
    index: 1
	name: <alsa_card.pci-0000_32_00.3>
	driver: <module-alsa-card.c>
	owner module: 7
	properties:
		alsa.card = "1"
		alsa.card_name = "HD-Audio Generic"
		alsa.long_card_name = "HD-Audio Generic at 0xf7d00000 irq 79"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:32:00.3"
		sysfs.path = "/devices/pci0000:00/0000:00:08.1/0000:32:00.3/sound/card1"
		device.bus = "pci"
		device.vendor.id = "1022"
		device.vendor.name = "Advanced Micro Devices, Inc. [AMD]"
		device.product.id = "1457"
		device.product.name = "Family 17h (Models 00h-0fh) HD Audio Controller"
		device.string = "1"
		device.description = "Family 17h (Models 00h-0fh) HD Audio Controller"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	profiles:
		input:analog-stereo: Analog Stereo Input (priority 65, available: unknown)
		output:analog-stereo: Analog Stereo Output (priority 6500, available: unknown)
		output:analog-stereo+input:analog-stereo: Analog Stereo Duplex (priority 6565, available: unknown)
		output:analog-surround-21: Analog Surround 2.1 Output (priority 1300, available: unknown)
		output:analog-surround-21+input:analog-stereo: Analog Surround 2.1 Output + Analog Stereo Input (priority 1365, available: unknown)
		output:analog-surround-40: Analog Surround 4.0 Output (priority 1200, available: unknown)
		output:analog-surround-40+input:analog-stereo: Analog Surround 4.0 Output + Analog Stereo Input (priority 1265, available: unknown)
		output:analog-surround-41: Analog Surround 4.1 Output (priority 1300, available: unknown)
		output:analog-surround-41+input:analog-stereo: Analog Surround 4.1 Output + Analog Stereo Input (priority 1365, available: unknown)
		output:analog-surround-50: Analog Surround 5.0 Output (priority 1200, available: unknown)
		output:analog-surround-50+input:analog-stereo: Analog Surround 5.0 Output + Analog Stereo Input (priority 1265, available: unknown)
		output:analog-surround-51: Analog Surround 5.1 Output (priority 1300, available: unknown)
		output:analog-surround-51+input:analog-stereo: Analog Surround 5.1 Output + Analog Stereo Input (priority 1365, available: unknown)
		output:iec958-stereo: Digital Stereo (IEC958) Output (priority 5500, available: unknown)
		output:iec958-stereo+input:analog-stereo: Digital Stereo (IEC958) Output + Analog Stereo Input (priority 5565, available: unknown)
		off: Off (priority 0, available: unknown)
	active profile: <output:analog-stereo+input:analog-stereo>
	sinks:
		alsa_output.pci-0000_32_00.3.analog-stereo/#1: Family 17h (Models 00h-0fh) HD Audio Controller Analog Stereo
	sources:
		alsa_output.pci-0000_32_00.3.analog-stereo.monitor/#1: Monitor of Family 17h (Models 00h-0fh) HD Audio Controller Analog Stereo
		alsa_input.pci-0000_32_00.3.analog-stereo/#2: Family 17h (Models 00h-0fh) HD Audio Controller Analog Stereo
	ports:
		analog-input-front-mic: Front Microphone (priority 8500, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "audio-input-microphone"
		analog-input-rear-mic: Rear Microphone (priority 8200, latency offset 0 usec, available: yes)
			properties:
				device.icon_name = "audio-input-microphone"
		analog-input-linein: Line In (priority 8100, latency offset 0 usec, available: no)
			properties:
				
		analog-output-lineout: Line Out (priority 9000, latency offset 0 usec, available: yes)
			properties:
				
		analog-output-headphones: Headphones (priority 9900, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "audio-headphones"
		iec958-stereo-output: Digital Output (S/PDIF) (priority 0, latency offset 0 usec, available: unknown)
			properties:
				

And now I am testing it with friend and he hears the sound of the video I am watching.

sudo fuser -v /dev/snd/*

void@shodan ~ $ sudo fuser -v /dev/snd/*
[sudo] password for void: 
                     USER        PID ACCESS COMMAND
/dev/snd/controlC0:  void      37534 F.... pulseaudio
/dev/snd/controlC1:  void      37534 F.... pulseaudio
/dev/snd/pcmC0D11p:  void      37534 F...m pulseaudio
/dev/snd/pcmC1D0c:   void      37534 F...m pulseaudio
/dev/snd/pcmC1D0p:   void      37534 F...m pulseaudio
/dev/snd/timer:      void      37534 f.... pulseaudio

void@shodan ~ $ pacmd list-sources
3 source(s) available.
    index: 0
	name: <alsa_output.pci-0000_30_00.1.hdmi-stereo-extra5.monitor>
	driver: <module-alsa-card.c>
	flags: DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
	state: RUNNING
	suspend cause: (none)
	priority: 1030
	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
	volume steps: 65537
	muted: yes
	current latency: 0,00 ms
	max rewind: 6 KiB
	sample spec: s16le 2ch 44100Hz
	channel map: front-left,front-right
	             Stereo
	used by: 1
	linked by: 1
	configured latency: 40,00 ms; range is 0,50 .. 1999,82 ms
	monitor_of: 0
	card: 0 <alsa_card.pci-0000_30_00.1>
	module: 6
	properties:
		device.description = "Monitor of Vega 10 HDMI Audio [Radeon Vega 56/64] Digital Stereo (HDMI 6)"
		device.class = "monitor"
		alsa.card = "0"
		alsa.card_name = "HDA ATI HDMI"
		alsa.long_card_name = "HDA ATI HDMI at 0xf7ba0000 irq 77"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:30:00.1"
		sysfs.path = "/devices/pci0000:00/0000:00:03.1/0000:2e:00.0/0000:2f:00.0/0000:30:00.1/sound/card0"
		device.bus = "pci"
		device.vendor.id = "1002"
		device.vendor.name = "Advanced Micro Devices, Inc. [AMD/ATI]"
		device.product.id = "aaf8"
		device.product.name = "Vega 10 HDMI Audio [Radeon Vega 56/64]"
		device.string = "0"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
    index: 1
	name: <alsa_output.pci-0000_32_00.3.analog-stereo.monitor>
	driver: <module-alsa-card.c>
	flags: DECIBEL_VOLUME LATENCY 
	state: RUNNING
	suspend cause: (none)
	priority: 1030
	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
	volume steps: 65537
	muted: yes
	current latency: 0,00 ms
	max rewind: 17 KiB
	sample spec: s16le 2ch 44100Hz
	channel map: front-left,front-right
	             Stereo
	used by: 3
	linked by: 3
	fixed latency: 100,14 ms
	monitor_of: 1
	card: 1 <alsa_card.pci-0000_32_00.3>
	module: 7
	properties:
		device.description = "Monitor of Family 17h (Models 00h-0fh) HD Audio Controller Analog Stereo"
		device.class = "monitor"
		alsa.card = "1"
		alsa.card_name = "HD-Audio Generic"
		alsa.long_card_name = "HD-Audio Generic at 0xf7d00000 irq 79"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:32:00.3"
		sysfs.path = "/devices/pci0000:00/0000:00:08.1/0000:32:00.3/sound/card1"
		device.bus = "pci"
		device.vendor.id = "1022"
		device.vendor.name = "Advanced Micro Devices, Inc. [AMD]"
		device.product.id = "1457"
		device.product.name = "Family 17h (Models 00h-0fh) HD Audio Controller"
		device.string = "1"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
  * index: 2
	name: <alsa_input.pci-0000_32_00.3.analog-stereo>
	driver: <module-alsa-card.c>
	flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY 
	state: RUNNING
	suspend cause: (none)
	priority: 9039
	volume: front-left: 30421 /  46% / -20,00 dB,   front-right: 30421 /  46% / -20,00 dB
	        balance 0,00
	base volume: 6554 /  10% / -60,00 dB
	volume steps: 65537
	muted: no
	current latency: 0,74 ms
	max rewind: 0 KiB
	sample spec: s16le 2ch 44100Hz
	channel map: front-left,front-right
	             Stereo
	used by: 2
	linked by: 2
	fixed latency: 100,14 ms
	card: 1 <alsa_card.pci-0000_32_00.3>
	module: 7
	properties:
		alsa.resolution_bits = "16"
		device.api = "alsa"
		device.class = "sound"
		alsa.class = "generic"
		alsa.subclass = "generic-mix"
		alsa.name = "ALC1220 Analog"
		alsa.id = "ALC1220 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 0xf7d00000 irq 79"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:32:00.3"
		sysfs.path = "/devices/pci0000:00/0000:00:08.1/0000:32:00.3/sound/card1"
		device.bus = "pci"
		device.vendor.id = "1022"
		device.vendor.name = "Advanced Micro Devices, Inc. [AMD]"
		device.product.id = "1457"
		device.product.name = "Family 17h (Models 00h-0fh) HD Audio Controller"
		device.string = "front:1"
		device.buffering.buffer_size = "17664"
		device.buffering.fragment_size = "2944"
		device.access_mode = "mmap"
		device.profile.name = "analog-stereo"
		device.profile.description = "Analog Stereo"
		device.description = "Family 17h (Models 00h-0fh) HD Audio Controller Analog Stereo"
		alsa.mixer_name = "Realtek ALC1220"
		alsa.components = "HDA:10ec1220,18492221,00100101"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	ports:
		analog-input-front-mic: Front Microphone (priority 8500, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "audio-input-microphone"
		analog-input-rear-mic: Rear Microphone (priority 8200, latency offset 0 usec, available: yes)
			properties:
				device.icon_name = "audio-input-microphone"
		analog-input-linein: Line In (priority 8100, latency offset 0 usec, available: no)
			properties:
				
	active port: <analog-input-rear-mic>

void@shodan ~ $ pacmd list-source-outputs
6 source output(s) available.
    index: 0
	driver: <protocol-native.c>
	flags: DONT_MOVE 
	state: RUNNING
	source: 0 <alsa_output.pci-0000_30_00.1.hdmi-stereo-extra5.monitor>
	volume: mono: 65536 / 100% / 0,00 dB
	        balance 0,00
	muted: no
	current latency: 19,89 ms
	requested latency: 40,00 ms
	sample spec: float32le 1ch 25Hz
	channel map: mono
	             Mono
	resample method: peaks
	owner module: 12
	client: 5 <PulseAudio Volume Control>
	properties:
		media.name = "Peak detect"
		application.name = "PulseAudio Volume Control"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "33"
		application.id = "org.PulseAudio.pavucontrol"
		application.icon_name = "audio-card"
		application.version = "4.0"
		application.process.id = "27727"
		application.process.user = "void"
		application.process.host = "shodan"
		application.process.binary = "pavucontrol"
		application.language = "en_US.UTF-8"
		window.x11.display = ":0"
		application.process.machine_id = "f85db2becb7f4ea59b0739b9af9eaee7"
		module-stream-restore.id = "source-output-by-application-id:org.PulseAudio.pavucontrol"
    index: 1
	driver: <protocol-native.c>
	flags: DONT_MOVE 
	state: RUNNING
	source: 1 <alsa_output.pci-0000_32_00.3.analog-stereo.monitor>
	volume: mono: 65536 / 100% / 0,00 dB
	        balance 0,00
	muted: no
	current latency: 89,82 ms
	requested latency: 100,14 ms
	sample spec: float32le 1ch 25Hz
	channel map: mono
	             Mono
	resample method: peaks
	owner module: 12
	client: 5 <PulseAudio Volume Control>
	properties:
		media.name = "Peak detect"
		application.name = "PulseAudio Volume Control"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "33"
		application.id = "org.PulseAudio.pavucontrol"
		application.icon_name = "audio-card"
		application.version = "4.0"
		application.process.id = "27727"
		application.process.user = "void"
		application.process.host = "shodan"
		application.process.binary = "pavucontrol"
		application.language = "en_US.UTF-8"
		window.x11.display = ":0"
		application.process.machine_id = "f85db2becb7f4ea59b0739b9af9eaee7"
		module-stream-restore.id = "source-output-by-application-id:org.PulseAudio.pavucontrol"
    index: 2
	driver: <protocol-native.c>
	flags: DONT_MOVE 
	state: RUNNING
	source: 2 <alsa_input.pci-0000_32_00.3.analog-stereo>
	volume: mono: 65536 / 100% / 0,00 dB
	        balance 0,00
	muted: no
	current latency: 0,00 ms
	requested latency: 100,14 ms
	sample spec: float32le 1ch 25Hz
	channel map: mono
	             Mono
	resample method: peaks
	owner module: 12
	client: 5 <PulseAudio Volume Control>
	properties:
		media.name = "Peak detect"
		application.name = "PulseAudio Volume Control"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "33"
		application.id = "org.PulseAudio.pavucontrol"
		application.icon_name = "audio-card"
		application.version = "4.0"
		application.process.id = "27727"
		application.process.user = "void"
		application.process.host = "shodan"
		application.process.binary = "pavucontrol"
		application.language = "en_US.UTF-8"
		window.x11.display = ":0"
		application.process.machine_id = "f85db2becb7f4ea59b0739b9af9eaee7"
		module-stream-restore.id = "source-output-by-application-id:org.PulseAudio.pavucontrol"
    index: 18
	driver: <protocol-native.c>
	flags: DONT_MOVE 
	state: RUNNING
	source: 1 <alsa_output.pci-0000_32_00.3.analog-stereo.monitor>
	volume: mono: 65536 / 100% / 0,00 dB
	        balance 0,00
	muted: no
	current latency: 89,93 ms
	requested latency: 100,14 ms
	sample spec: float32le 1ch 25Hz
	channel map: mono
	             Mono
	resample method: peaks
	owner module: 12
	client: 5 <PulseAudio Volume Control>
	direct on input: 19
	properties:
		media.name = "Peak detect"
		application.name = "PulseAudio Volume Control"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "33"
		application.id = "org.PulseAudio.pavucontrol"
		application.icon_name = "audio-card"
		application.version = "4.0"
		application.process.id = "27727"
		application.process.user = "void"
		application.process.host = "shodan"
		application.process.binary = "pavucontrol"
		application.language = "en_US.UTF-8"
		window.x11.display = ":0"
		application.process.machine_id = "f85db2becb7f4ea59b0739b9af9eaee7"
		module-stream-restore.id = "source-output-by-application-id:org.PulseAudio.pavucontrol"
    index: 19
	driver: <protocol-native.c>
	flags: 
	state: RUNNING
	source: 2 <alsa_input.pci-0000_32_00.3.analog-stereo>
	volume: front-left: 65536 / 100% / 0,00 dB,   front-right: 65536 / 100% / 0,00 dB
	        balance 0,00
	muted: no
	current latency: 0,00 ms
	requested latency: 100,14 ms
	sample spec: s16le 2ch 44100Hz
	channel map: front-left,front-right
	             Stereo
	resample method: (null)
	owner module: 12
	client: 35 <WEBRTC VoiceEngine>
	properties:
		media.name = "recStream"
		application.name = "WEBRTC VoiceEngine"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "33"
		application.process.id = "40876"
		application.process.user = "void"
		application.process.host = "shodan"
		application.process.binary = "Discord"
		application.language = "en_US.UTF-8"
		window.x11.display = ":0"
		application.process.machine_id = "f85db2becb7f4ea59b0739b9af9eaee7"
		module-stream-restore.id = "source-output-by-application-name:WEBRTC VoiceEngine"
    index: 22
	driver: <protocol-native.c>
	flags: DONT_MOVE 
	state: RUNNING
	source: 1 <alsa_output.pci-0000_32_00.3.analog-stereo.monitor>
	volume: mono: 65536 / 100% / 0,00 dB
	        balance 0,00
	muted: no
	current latency: 90,09 ms
	requested latency: 100,14 ms
	sample spec: float32le 1ch 25Hz
	channel map: mono
	             Mono
	resample method: peaks
	owner module: 12
	client: 5 <PulseAudio Volume Control>
	direct on input: 22
	properties:
		media.name = "Peak detect"
		application.name = "PulseAudio Volume Control"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "33"
		application.id = "org.PulseAudio.pavucontrol"
		application.icon_name = "audio-card"
		application.version = "4.0"
		application.process.id = "27727"
		application.process.user = "void"
		application.process.host = "shodan"
		application.process.binary = "pavucontrol"
		application.language = "en_US.UTF-8"
		window.x11.display = ":0"
		application.process.machine_id = "f85db2becb7f4ea59b0739b9af9eaee7"
		module-stream-restore.id = "source-output-by-application-id:org.PulseAudio.pavucontrol"

Thank you once more for helping.

Do you have a webcam with a mic?

No, I have headphones with a removable microphone and speakers.

Last edited by Void_Walker (2020-05-04 15:17:11)

DarkSun

Member

Registered: 2018-09-25

Posts: 31

Re: Misterious audio loopback device

I'm having the same issue after today's update.

Microphone is acting like "Monitor devices", instead of recording what it hears, it records what computer plays.

Void_Walker

Member

Registered: 2009-06-17

Posts: 53

Re: Misterious audio loopback device

It behaves as if it had both the monitor device input as well as microphone input.
Do you also use gnome?

DarkSun

Member

Registered: 2018-09-25

Posts: 31

Re: Misterious audio loopback device

It behaves as if it had both the monitor device input as well as microphone input.
Do you also use gnome?

Nah, I'm using XFCE4

There is a small difference probably
I'm using a 3.5mm 2 to 1 jack converter, cause my laptop only has one 3.5mm jack input, It supports both Input and Output devices,

Last edited by DarkSun (2020-05-04 22:25:10)

Void_Walker

Member

Registered: 2009-06-17

Posts: 53

Re: Misterious audio loopback device

Ok, so the converter is at fault. Now I tried to disconnect the headphones (I left the mic from the headphones connected) and connected different headphones.
Now the behavior stopped. Still I would love to find out why this behaves like this. Should I find out something I will update this thread.

Last edited by Void_Walker (2020-05-06 12:38:53)

DarkSun

Member

Registered: 2018-09-25

Posts: 31

Re: Misterious audio loopback device

Ok, so the converter is at fault. Now I tried to disconnect the headphones (I left the mic connected) and connected different headphones.
Now the behavior stopped. Still I would love to find out why this behaves like this. Should I find out something I will update this thread.

And an update on myside,
My microphone's battery was dead -,-

Still it was weird that our microphones were having the same behavior on the same day

Last edited by DarkSun (2020-05-06 01:49:28)