Bizarre failure of USB headset

Getting your soundcard to work, using Debian on non-i386 hardware, etc

Bizarre failure of USB headset

Postby ribault » 2020-10-21 18:10

I have installed Debian 10 on a laptop and on a desktop. I am trying to use a Wantek USB headset (earphones + microphone). On both computers I observe the same bizarre failures:

- The earphones play the Skype ringtones, but no other sound from Skype or internet.
- The microphone passes the online microphone test https://www.onlinemictest.com/ , but not the Skype call test.

Checking parameters on Alsamixer, and installing firmware-linux-nonfree do not help. Both computers work well if I plug a non-USB headset with two coaxial connectors (one for microphone, one for earphones). The headset works well with Ubuntu 18.04 on another laptop.

Any ideas on explaining these symptoms, and curing the disease?
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Re: Bizarre failure of USB headset

Postby Head_on_a_Stick » 2020-10-22 15:49

Run this command in both distributions:
Code: Select all
udevadm monitor

Then plug in the headset and compare & contrast the outputs in both to see what Ubuntu is doing differently.
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Re: Bizarre failure of USB headset

Postby ribault » 2020-10-22 18:30

Thank you for the suggestion. The main difference seems to be that Debian loads the two modules 'snd_seq_device' and 'snd_rawmidi', in addition to the two modules 'snd_usbmidi_lib' and 'snd_usb_audio' that Ubuntu also loads. See below for the raw outputs.

Debian 10 laptop W550SU1:
Code: Select all
KERNEL[2233.243197] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6 (usb)
KERNEL[2233.249030] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.0 (usb)
KERNEL[2233.249097] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.1 (usb)
KERNEL[2233.249141] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.2 (usb)
KERNEL[2233.249180] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.3 (usb)
KERNEL[2233.249221] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.3/0003:0D8C:0014.0002 (hid)
KERNEL[2233.249272] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.3/0003:0D8C:0014.0002/input/input25 (input)
KERNEL[2233.305341] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.3/0003:0D8C:0014.0002/input/input25/event18 (input)
KERNEL[2233.305588] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.3/0003:0D8C:0014.0002/hidraw/hidraw1 (hidraw)
KERNEL[2233.305669] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.3/0003:0D8C:0014.0002 (hid)
KERNEL[2233.305742] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.3 (usb)
KERNEL[2233.305815] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-6 (usb)
UDEV  [2233.327011] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6 (usb)
UDEV  [2233.338867] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.1 (usb)
UDEV  [2233.341096] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.3 (usb)
UDEV  [2233.344097] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.3/0003:0D8C:0014.0002 (hid)
KERNEL[2233.344211] add      /module/snd_seq_device (module)
KERNEL[2233.344300] add      /bus/snd_seq (bus)
UDEV  [2233.344869] add      /module/snd_seq_device (module)
UDEV  [2233.346780] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.2 (usb)
KERNEL[2233.350321] add      /module/snd_rawmidi (module)
UDEV  [2233.350827] add      /module/snd_rawmidi (module)
UDEV  [2233.351811] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.3/0003:0D8C:0014.0002/input/input25 (input)
UDEV  [2233.353491] add      /bus/snd_seq (bus)
UDEV  [2233.357704] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.3/0003:0D8C:0014.0002/hidraw/hidraw1 (hidraw)
KERNEL[2233.358817] add      /module/snd_usbmidi_lib (module)
UDEV  [2233.359352] add      /module/snd_usbmidi_lib (module)
KERNEL[2233.372741] add      /module/snd_usb_audio (module)
UDEV  [2233.373216] add      /module/snd_usb_audio (module)
KERNEL[2233.376016] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.1 (usb)
KERNEL[2233.376966] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.2 (usb)
KERNEL[2233.381731] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.0/sound/card2 (sound)
KERNEL[2233.382063] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.0/sound/card2/pcmC2D0p (sound)
KERNEL[2233.382088] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.0/sound/card2/pcmC2D0c (sound)
KERNEL[2233.382105] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.0/sound/card2/controlC2 (sound)
KERNEL[2233.382130] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.0 (usb)
KERNEL[2233.384944] add      /bus/usb/drivers/snd-usb-audio (drivers)
UDEV  [2233.385850] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.0 (usb)
UDEV  [2233.385882] add      /bus/usb/drivers/snd-usb-audio (drivers)
UDEV  [2233.407559] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.3/0003:0D8C:0014.0002/input/input25/event18 (input)
UDEV  [2233.411017] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.3/0003:0D8C:0014.0002 (hid)
UDEV  [2233.411062] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.3 (usb)
UDEV  [2233.418799] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-6 (usb)
UDEV  [2233.421218] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.2 (usb)
UDEV  [2233.421261] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.0/sound/card2 (sound)
KERNEL[2233.425988] change   /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.0/sound/card2 (sound)
UDEV  [2233.427788] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.0/sound/card2/pcmC2D0p (sound)
UDEV  [2233.428292] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.1 (usb)
UDEV  [2233.434767] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.0/sound/card2/pcmC2D0c (sound)
UDEV  [2233.444774] add      /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.0/sound/card2/controlC2 (sound)
UDEV  [2233.446492] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.0 (usb)
UDEV  [2233.448717] change   /devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.0/sound/card2 (sound)


Ubuntu 18.04 laptop Acer Swift 3 :
Code: Select all
KERNEL[6153.898828] add /devices/pci0000:00/0000:00:14.0/usb1/1-1 (usb)
KERNEL[6153.899650] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0 (usb)
KERNEL[6153.899744] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.1 (usb)
KERNEL[6153.899836] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.2 (usb)
KERNEL[6153.899935] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.3 (usb)
KERNEL[6153.900543] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.3/0003:0D8C:0014.0003 (hid)
KERNEL[6153.900872] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.3/0003:0D8C:0014.0003/input/input21 (input)
KERNEL[6153.957651] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.3/0003:0D8C:0014.0003/input/input21/event17 (input)
KERNEL[6153.957817] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.3/0003:0D8C:0014.0003/hidraw/hidraw2 (hidraw)
KERNEL[6153.957941] bind /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.3/0003:0D8C:0014.0003 (hid)
KERNEL[6153.958047] bind /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.3 (usb)
KERNEL[6153.958177] bind /devices/pci0000:00/0000:00:14.0/usb1/1-1 (usb)
UDEV  [6153.970884] add /devices/pci0000:00/0000:00:14.0/usb1/1-1 (usb)
UDEV  [6153.974891] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.2 (usb)
UDEV  [6153.974942] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.1 (usb)
KERNEL[6153.976919] add      /module/snd_usbmidi_lib (module)
UDEV  [6153.977257] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.3 (usb)
UDEV  [6153.977554] add      /module/snd_usbmidi_lib (module)
UDEV  [6153.978588] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.3/0003:0D8C:0014.0003 (hid)
UDEV  [6153.980081] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.3/0003:0D8C:0014.0003/input/input21 (input)
UDEV  [6153.980135] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.3/0003:0D8C:0014.0003/hidraw/hidraw2 (hidraw)
KERNEL[6153.982468] add      /module/snd_usb_audio (module)
UDEV  [6153.983118] add      /module/snd_usb_audio (module)
KERNEL[6153.983922] bind /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.1 (usb)
KERNEL[6153.984596] bind /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.2 (usb)
KERNEL[6153.989830] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/sound/card1 (sound)
KERNEL[6153.989890] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/sound/card1/pcmC1D0p (sound)
KERNEL[6153.989944] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/sound/card1/pcmC1D0c (sound)
KERNEL[6153.990004] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/sound/card1/controlC1 (sound)
KERNEL[6153.990082] bind /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0 (usb)
KERNEL[6153.990104] add      /bus/usb/drivers/snd-usb-audio (drivers)
UDEV  [6153.990224] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0 (usb)
UDEV  [6153.990874] add      /bus/usb/drivers/snd-usb-audio (drivers)
UDEV  [6154.031810] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.3/0003:0D8C:0014.0003/input/input21/event17 (input)
UDEV  [6154.035204] bind /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.3/0003:0D8C:0014.0003 (hid)
UDEV  [6154.038236] bind /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.3 (usb)
UDEV  [6154.042039] bind /devices/pci0000:00/0000:00:14.0/usb1/1-1 (usb)
UDEV  [6154.045931] bind /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.1 (usb)
UDEV  [6154.046210] bind /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.2 (usb)
UDEV  [6154.046392] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/sound/card1 (sound)
UDEV  [6154.052746] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/sound/card1/pcmC1D0p (sound)
UDEV  [6154.052923] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/sound/card1/pcmC1D0c (sound)
KERNEL[6154.053038] change /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/sound/card1 (sound)
UDEV  [6154.070643] add /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/sound/card1/controlC1 (sound)
UDEV  [6154.074236] bind /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0 (usb)
UDEV  [6154.076430] change /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/sound/card1 (sound)
Last edited by ribault on 2020-10-23 17:53, edited 1 time in total.
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Re: Bizarre failure of USB headset

Postby Head_on_a_Stick » 2020-10-23 16:52

Which desktop is this?

Can we also see the output of this command with the headset plugged in:
Code: Select all
pacmd list-sinks
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Re: Bizarre failure of USB headset

Postby ribault » 2020-10-23 18:23

The data are not for the desktop (which I cannot access at the moment) but for two laptops. Here is now the output for the command 'pacmd list-sinks' that you suggest:

Debian 10 laptop W550SU1:
Code: Select all
2 sink(s) available.
    index: 0
        name: <alsa_output.pci-0000_00_1b.0.analog-stereo>
        driver: <module-alsa-card.c>
        flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY FLAT_VOLUME DYNAMIC_LATENCY
        state: SUSPENDED
        suspend cause: IDLE
        priority: 9039
        volume: front-left: 19661 /  30% / -31.37 dB,   front-right: 19661 /  30% / -31.37 dB
                balance 0.00
        base volume: 65536 / 100% / 0.00 dB
        volume steps: 65537
        muted: no
        current latency: 0.00 ms
        max request: 0 KiB
        max rewind: 0 KiB
        monitor source: 0
        sample spec: s16le 2ch 44100Hz
        channel map: front-left,front-right
                     Stereo
        used by: 0
        linked by: 0
        configured latency: 0.00 ms; range is 0.50 .. 2000.00 ms
        card: 1 <alsa_card.pci-0000_00_1b.0>
        module: 7
        properties:
                alsa.resolution_bits = "16"
                device.api = "alsa"
                device.class = "sound"
                alsa.class = "generic"
                alsa.subclass = "generic-mix"
                alsa.name = "ALC269VB Analog"
                alsa.id = "ALC269VB Analog"
                alsa.subdevice = "0"
                alsa.subdevice_name = "subdevice #0"
                alsa.device = "0"
                alsa.card = "1"
                alsa.card_name = "HDA Intel PCH"
                alsa.long_card_name = "HDA Intel PCH at 0xf7e10000 irq 31"
                alsa.driver_name = "snd_hda_intel"
                device.bus_path = "pci-0000:00:1b.0"
                sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card1"
                device.bus = "pci"
                device.vendor.id = "8086"
                device.vendor.name = "Intel Corporation"
                device.product.id = "8c20"
                device.product.name = "8 Series/C220 Series Chipset High Definition Audio Controller"
                device.form_factor = "internal"
                device.string = "front:1"
                device.buffering.buffer_size = "352800"
                device.buffering.fragment_size = "176400"
                device.access_mode = "mmap+timer"
                device.profile.name = "analog-stereo"
                device.profile.description = "Analog Stereo"
                device.description = "Built-in Audio Analog Stereo"
                alsa.mixer_name = "Realtek ALC269VB"
                alsa.components = "HDA:10ec0269,15585456,00100100"
                module-udev-detect.discovered = "1"
                device.icon_name = "audio-card-pci"
        ports:
                analog-output-speaker: Speakers (priority 10000, latency offset 0 usec, available: unknown)
                        properties:
                                device.icon_name = "audio-speakers"
                analog-output-headphones: Headphones (priority 9000, latency offset 0 usec, available: no)
                        properties:
                                device.icon_name = "audio-headphones"
        active port: <analog-output-speaker>
  * index: 1
        name: <alsa_output.usb-C-Media_Electronics_Inc._USB_Audio_Device-00.analog-stereo>
        driver: <module-alsa-card.c>
        flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY FLAT_VOLUME DYNAMIC_LATENCY
        state: SUSPENDED
        suspend cause: IDLE
        priority: 9049
        volume: front-left: 33423 /  51% / -17.55 dB,   front-right: 33423 /  51% / -17.55 dB
                balance 0.00
        base volume: 65536 / 100% / 0.00 dB
        volume steps: 65537
        muted: no
        current latency: 0.00 ms
        max request: 0 KiB
        max rewind: 0 KiB
        monitor source: 2
        sample spec: s16le 2ch 44100Hz
        channel map: front-left,front-right
                     Stereo
        used by: 0
        linked by: 0
        configured latency: 0.00 ms; range is 0.50 .. 2000.00 ms
        card: 2 <alsa_card.usb-C-Media_Electronics_Inc._USB_Audio_Device-00>
        module: 24
        properties:
                alsa.resolution_bits = "16"
                device.api = "alsa"
                device.class = "sound"
                alsa.class = "generic"
                alsa.subclass = "generic-mix"
                alsa.name = "USB Audio"
                alsa.id = "USB Audio"
                alsa.subdevice = "0"
                alsa.subdevice_name = "subdevice #0"
                alsa.device = "0"
                alsa.card = "2"
                alsa.card_name = "USB Audio Device"
                alsa.long_card_name = "C-Media Electronics Inc. USB Audio Device at usb-0000:00:14.0-6, full speed"
                alsa.driver_name = "snd_usb_audio"
                device.bus_path = "pci-0000:00:14.0-usb-0:6:1.0"
                sysfs.path = "/devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.0/sound/card2"
                udev.id = "usb-C-Media_Electronics_Inc._USB_Audio_Device-00"
                device.bus = "usb"
                device.vendor.id = "0d8c"
                device.vendor.name = "C-Media Electronics, Inc."
                device.product.id = "0014"
                device.product.name = "Audio Adapter (Unitek Y-247A)"
                device.serial = "C-Media_Electronics_Inc._USB_Audio_Device"
                device.string = "front:2"
                device.buffering.buffer_size = "352800"
                device.buffering.fragment_size = "176400"
                device.access_mode = "mmap+timer"
                device.profile.name = "analog-stereo"
                device.profile.description = "Analog Stereo"
                device.description = "Audio Adapter (Unitek Y-247A) Analog Stereo"
                alsa.mixer_name = "USB Mixer"
                alsa.components = "USB0d8c:0014"
                module-udev-detect.discovered = "1"
                device.icon_name = "audio-card-usb"
        ports:
                analog-output-speaker: Speakers (priority 10000, latency offset 0 usec, available: unknown)
                        properties:
                                device.icon_name = "audio-speakers"
        active port: <analog-output-speaker>


Ubuntu 18.04 laptop Acer Swift 3:
Code: Select all
2 sink(s) available.
    index: 0
    name: <alsa_output.pci-0000_00_1f.3.analog-stereo>
    driver: <module-alsa-card.c>
    flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
    state: SUSPENDED
    suspend cause: IDLE
    priority: 9039
    volume: front-left: 34080 /  52% / -17,04 dB,   front-right: 34080 /  52% / -17,04 dB
            balance 0,00
    base volume: 65536 / 100% / 0,00 dB
    volume steps: 65537
    muted: no
    current latency: 0,00 ms
    max request: 0 KiB
    max rewind: 0 KiB
    monitor source: 0
    sample spec: s16le 2ch 44100Hz
    channel map: front-left,front-right
                 Stéréo
    used by: 0
    linked by: 0
    configured latency: 0,00 ms; range is 0,50 .. 371,52 ms
    card: 0 <alsa_card.pci-0000_00_1f.3>
    module: 7
    properties:
        alsa.resolution_bits = "16"
        device.api = "alsa"
        device.class = "sound"
        alsa.class = "generic"
        alsa.subclass = "generic-mix"
        alsa.name = "ALC256 Analog"
        alsa.id = "ALC256 Analog"
        alsa.subdevice = "0"
        alsa.subdevice_name = "subdevice #0"
        alsa.device = "0"
        alsa.card = "0"
        alsa.card_name = "HDA Intel PCH"
        alsa.long_card_name = "HDA Intel PCH at 0xa121c000 irq 147"
        alsa.driver_name = "snd_hda_intel"
        device.bus_path = "pci-0000:00:1f.3"
        sysfs.path = "/devices/pci0000:00/0000:00:1f.3/sound/card0"
        device.bus = "pci"
        device.vendor.id = "8086"
        device.vendor.name = "Intel Corporation"
        device.product.id = "9dc8"
        device.form_factor = "internal"
        device.string = "front:0"
        device.buffering.buffer_size = "65536"
        device.buffering.fragment_size = "32768"
        device.access_mode = "mmap+timer"
        device.profile.name = "analog-stereo"
        device.profile.description = "Stéréo analogique"
        device.description = "Audio interne Stéréo analogique"
        alsa.mixer_name = "Realtek ALC256"
        alsa.components = "HDA:10ec0256,10251300,00100002 HDA:8086280b,80860101,00100000"
        module-udev-detect.discovered = "1"
        device.icon_name = "audio-card-pci"
    ports:
        analog-output-speaker: Haut-parleurs (priority 10000, latency offset 0 usec, available: unknown)
            properties:
                device.icon_name = "audio-speakers"
        analog-output-headphones: Casque audio (priority 9000, latency offset 0 usec, available: no)
            properties:
                device.icon_name = "audio-headphones"
    active port: <analog-output-speaker>
  * index: 1
    name: <alsa_output.usb-C-Media_Electronics_Inc._USB_Audio_Device-00.analog-stereo>
    driver: <module-alsa-card.c>
    flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
    state: SUSPENDED
    suspend cause: IDLE
    priority: 9049
    volume: front-left: 46147 /  70% / -9,14 dB,   front-right: 46147 /  70% / -9,14 dB
            balance 0,00
    base volume: 65536 / 100% / 0,00 dB
    volume steps: 65537
    muted: no
    current latency: 0,00 ms
    max request: 0 KiB
    max rewind: 0 KiB
    monitor source: 2
    sample spec: s16le 2ch 44100Hz
    channel map: front-left,front-right
                 Stéréo
    used by: 0
    linked by: 0
    configured latency: 0,00 ms; range is 0,50 .. 2000,00 ms
    card: 1 <alsa_card.usb-C-Media_Electronics_Inc._USB_Audio_Device-00>
    module: 25
    properties:
        alsa.resolution_bits = "16"
        device.api = "alsa"
        device.class = "sound"
        alsa.class = "generic"
        alsa.subclass = "generic-mix"
        alsa.name = "USB Audio"
        alsa.id = "USB Audio"
        alsa.subdevice = "0"
        alsa.subdevice_name = "subdevice #0"
        alsa.device = "0"
        alsa.card = "1"
        alsa.card_name = "USB Audio Device"
        alsa.long_card_name = "C-Media Electronics Inc. USB Audio Device at usb-0000:00:14.0-1, full speed"
        alsa.driver_name = "snd_usb_audio"
        device.bus_path = "pci-0000:00:14.0-usb-0:1:1.0"
        sysfs.path = "/devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/sound/card1"
        udev.id = "usb-C-Media_Electronics_Inc._USB_Audio_Device-00"
        device.bus = "usb"
        device.vendor.id = "0d8c"
        device.vendor.name = "C-Media Electronics, Inc."
        device.product.id = "0014"
        device.product.name = "Audio Adapter (Unitek Y-247A)"
        device.serial = "C-Media_Electronics_Inc._USB_Audio_Device"
        device.string = "front:1"
        device.buffering.buffer_size = "352800"
        device.buffering.fragment_size = "176400"
        device.access_mode = "mmap+timer"
        device.profile.name = "analog-stereo"
        device.profile.description = "Stéréo analogique"
        device.description = "Audio Adapter (Unitek Y-247A) Stéréo analogique"
        alsa.mixer_name = "USB Mixer"
        alsa.components = "USB0d8c:0014"
        module-udev-detect.discovered = "1"
        device.icon_name = "audio-card-usb"
    ports:
        analog-output-speaker: Haut-parleurs (priority 10000, latency offset 0 usec, available: unknown)
            properties:
                device.icon_name = "audio-speakers"
    active port: <analog-output-speaker>
ribault
 
Posts: 12
Joined: 2020-08-26 09:50

Re: Bizarre failure of USB headset

Postby Head_on_a_Stick » 2020-10-24 15:15

ribault wrote:The data are not for the desktop (which I cannot access at the moment) but for two laptops

Sorry, I meant to ask which desktop environment is this? Is it GNOME?

ribault wrote:Here is now the output for the command 'pacmd list-sinks' that you suggest

Well they both look the same. I am perplexed.
Black Lives Matter

Debian buster-backports ISO image: for new hardware support
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Head_on_a_Stick
 
Posts: 12756
Joined: 2014-06-01 17:46
Location: /dev/chair

Re: Bizarre failure of USB headset

Postby ribault » 2020-10-25 08:41

The desktop environment for the Debian laptop is KDE.

Thank you for your help and for the useful commands.
ribault
 
Posts: 12
Joined: 2020-08-26 09:50


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