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I get audio skipping when using a GoXLR on Arch. I don't get any skipping if I use my built-in sound card or a different USB DAC such as the Dragonfly Cobalt. I tried a few things with PulseAudio such as decreasing the nice level to -15, enabling realtime audio (and using the linux-zen kernel), setting different buffer sizes and sample rates, and setting tsched=0 but nothing worked. I found this thread and tried
aplay -Dplughw:2 test.wav
and the audio still skips.
pacmd list-cards
5 card(s) available.
index: 0
name: <alsa_card.usb-AudioQuest_AudioQuest_DragonFly_Cobalt_v1.0_AQDFCB0101011122-00>
driver: <module-alsa-card.c>
owner module: 6
properties:
alsa.card = "4"
alsa.card_name = "AudioQuest DragonFly Cobalt v1."
alsa.long_card_name = "AudioQuest AudioQuest DragonFly Cobalt v1. at usb-0000:03:00.0-1, full speed"
alsa.driver_name = "snd_usb_audio"
device.bus_path = "pci-0000:03:00.0-usb-0:1:1.0"
sysfs.path = "/devices/pci0000:00/0000:00:01.3/0000:03:00.0/usb1/1-1/1-1:1.0/sound/card4"
udev.id = "usb-AudioQuest_AudioQuest_DragonFly_Cobalt_v1.0_AQDFCB0101011122-00"
device.bus = "usb"
device.vendor.id = "21b4"
device.vendor.name = "AudioQuest"
device.product.id = "0085"
device.product.name = "AudioQuest DragonFly Cobalt v1.0"
device.serial = "AudioQuest_AudioQuest_DragonFly_Cobalt_v1.0_AQDFCB0101011122"
device.string = "4"
device.description = "AudioQuest DragonFly Cobalt v1.0"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-usb"
profiles:
output:analog-stereo: Analog Stereo Output (priority 6500, available: unknown)
output:iec958-stereo: Digital Stereo (IEC958) Output (priority 5500, available: unknown)
off: Off (priority 0, available: unknown)
active profile: <output:analog-stereo>
sinks:
alsa_output.usb-AudioQuest_AudioQuest_DragonFly_Cobalt_v1.0_AQDFCB0101011122-00.analog-stereo/#0: AudioQuest DragonFly Cobalt v1.0 Analog Stereo
sources:
alsa_output.usb-AudioQuest_AudioQuest_DragonFly_Cobalt_v1.0_AQDFCB0101011122-00.analog-stereo.monitor/#0: Monitor of AudioQuest DragonFly Cobalt v1.0 Analog Stereo
ports:
analog-output: Analog Output (priority 9900, latency offset 0 usec, available: unknown)
properties:
iec958-stereo-output: Digital Output (S/PDIF) (priority 0, latency offset 0 usec, available: unknown)
properties:
index: 1
name: <alsa_card.usb-046d_C922_Pro_Stream_Webcam_FAF598AF-02>
driver: <module-alsa-card.c>
owner module: 7
properties:
alsa.card = "3"
alsa.card_name = "C922 Pro Stream Webcam"
alsa.long_card_name = "C922 Pro Stream Webcam at usb-0000:1c:00.0-2, high speed"
alsa.driver_name = "snd_usb_audio"
device.bus_path = "pci-0000:1c:00.0-usb-0:2:1.2"
sysfs.path = "/devices/pci0000:00/0000:00:01.3/0000:03:00.2/0000:16:08.0/0000:1c:00.0/usb3/3-2/3-2:1.2/sound/card3"
udev.id = "usb-046d_C922_Pro_Stream_Webcam_FAF598AF-02"
device.bus = "usb"
device.vendor.id = "046d"
device.vendor.name = "Logitech, Inc."
device.product.id = "085c"
device.product.name = "C922 Pro Stream Webcam"
device.serial = "046d_C922_Pro_Stream_Webcam_FAF598AF"
device.form_factor = "webcam"
device.string = "3"
device.description = "C922 Pro Stream Webcam"
module-udev-detect.discovered = "1"
device.icon_name = "camera-web-usb"
profiles:
input:analog-stereo: Analog Stereo Input (priority 65, available: unknown)
input:iec958-stereo: Digital Stereo (IEC958) Input (priority 55, available: unknown)
off: Off (priority 0, available: unknown)
active profile: <input:analog-stereo>
sources:
alsa_input.usb-046d_C922_Pro_Stream_Webcam_FAF598AF-02.analog-stereo/#1: C922 Pro Stream Webcam Analog Stereo
ports:
analog-input-mic: Microphone (priority 8700, latency offset 0 usec, available: unknown)
properties:
device.icon_name = "audio-input-microphone"
iec958-stereo-input: Digital Input (S/PDIF) (priority 0, latency offset 0 usec, available: unknown)
properties:
index: 2
name: <alsa_card.pci-0000_1d_00.1>
driver: <module-alsa-card.c>
owner module: 8
properties:
alsa.card = "0"
alsa.card_name = "HDA NVidia"
alsa.long_card_name = "HDA NVidia at 0xf7080000 irq 62"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:1d:00.1"
sysfs.path = "/devices/pci0000:00/0000:00:03.1/0000:1d:00.1/sound/card0"
device.bus = "pci"
device.vendor.id = "10de"
device.vendor.name = "NVIDIA Corporation"
device.product.id = "10ef"
device.product.name = "GP102 HDMI Audio Controller"
device.string = "0"
device.description = "GP102 HDMI Audio Controller"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
profiles:
output:hdmi-stereo: Digital Stereo (HDMI) Output (priority 5900, available: unknown)
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: unknown)
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: no)
output:hdmi-surround-extra5: Digital Surround 5.1 (HDMI 6) Output (priority 600, available: no)
output:hdmi-surround71-extra5: Digital Surround 7.1 (HDMI 6) Output (priority 600, available: no)
output:hdmi-stereo-extra6: Digital Stereo (HDMI 7) Output (priority 5700, available: no)
output:hdmi-surround-extra6: Digital Surround 5.1 (HDMI 7) Output (priority 600, available: no)
output:hdmi-surround71-extra6: Digital Surround 7.1 (HDMI 7) Output (priority 600, available: no)
off: Off (priority 0, available: unknown)
active profile: <off>
ports:
hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: yes)
properties:
device.icon_name = "video-display"
device.product.name = "ROG PG279Q
"
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 -20000 usec, available: yes)
properties:
device.icon_name = "video-display"
device.product.name = "VG279QM
"
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: no)
properties:
device.icon_name = "video-display"
hdmi-output-6: HDMI / DisplayPort 7 (priority 5300, latency offset 0 usec, available: no)
properties:
device.icon_name = "video-display"
index: 3
name: <alsa_card.usb-TC-Helicon_GoXLR-00>
driver: <module-alsa-card.c>
owner module: 9
properties:
alsa.card = "2"
alsa.card_name = "GoXLR"
alsa.long_card_name = "TC-Helicon GoXLR at usb-0000:1e:00.3-2, high speed"
alsa.driver_name = "snd_usb_audio"
device.bus_path = "pci-0000:1e:00.3-usb-0:2:1.0"
sysfs.path = "/devices/pci0000:00/0000:00:07.1/0000:1e:00.3/usb5/5-2/5-2:1.0/sound/card2"
udev.id = "usb-TC-Helicon_GoXLR-00"
device.bus = "usb"
device.vendor.id = "1220"
device.vendor.name = "TC Electronic"
device.product.id = "8fe0"
device.product.name = "GoXLR"
device.serial = "TC-Helicon_GoXLR"
device.string = "2"
device.description = "GoXLR"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-usb"
profiles:
input:multichannel-input: Multichannel Input (priority 1, available: unknown)
output:multichannel-output: Multichannel Output (priority 100, available: unknown)
output:multichannel-output+input:multichannel-input: Multichannel Duplex (priority 101, available: unknown)
off: Off (priority 0, available: unknown)
active profile: <output:multichannel-output+input:multichannel-input>
sinks:
alsa_output.usb-TC-Helicon_GoXLR-00.multichannel-output/#1: GoXLR Multichannel
sources:
alsa_output.usb-TC-Helicon_GoXLR-00.multichannel-output.monitor/#2: Monitor of GoXLR Multichannel
alsa_input.usb-TC-Helicon_GoXLR-00.multichannel-input/#3: GoXLR Multichannel
index: 4
name: <alsa_card.pci-0000_1f_00.3>
driver: <module-alsa-card.c>
owner module: 10
properties:
alsa.card = "1"
alsa.card_name = "HD-Audio Generic"
alsa.long_card_name = "HD-Audio Generic at 0xf7800000 irq 64"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:1f:00.3"
sysfs.path = "/devices/pci0000:00/0000:00:08.1/0000:1f: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: no)
output:analog-stereo: Analog Stereo Output (priority 6500, available: no)
output:analog-stereo+input:analog-stereo: Analog Stereo Duplex (priority 6565, available: no)
output:analog-surround-21: Analog Surround 2.1 Output (priority 1300, available: no)
output:analog-surround-21+input:analog-stereo: Analog Surround 2.1 Output + Analog Stereo Input (priority 1365, available: no)
output:analog-surround-40: Analog Surround 4.0 Output (priority 1200, available: no)
output:analog-surround-40+input:analog-stereo: Analog Surround 4.0 Output + Analog Stereo Input (priority 1265, available: no)
output:analog-surround-41: Analog Surround 4.1 Output (priority 1300, available: no)
output:analog-surround-41+input:analog-stereo: Analog Surround 4.1 Output + Analog Stereo Input (priority 1365, available: no)
output:analog-surround-50: Analog Surround 5.0 Output (priority 1200, available: no)
output:analog-surround-50+input:analog-stereo: Analog Surround 5.0 Output + Analog Stereo Input (priority 1265, available: no)
output:analog-surround-51: Analog Surround 5.1 Output (priority 1300, available: no)
output:analog-surround-51+input:analog-stereo: Analog Surround 5.1 Output + Analog Stereo Input (priority 1365, available: no)
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: no)
off: Off (priority 0, available: unknown)
active profile: <off>
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: no)
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: no)
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:
pacmd list-sinks
3 sink(s) available.
index: 0
name: <alsa_output.usb-AudioQuest_AudioQuest_DragonFly_Cobalt_v1.0_AQDFCB0101011122-00.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: 15405 / 24% / -37.73 dB, front-right: 15405 / 24% / -37.73 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: s24le 2ch 48000Hz
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: 0 <alsa_card.usb-AudioQuest_AudioQuest_DragonFly_Cobalt_v1.0_AQDFCB0101011122-00>
module: 6
properties:
alsa.resolution_bits = "24"
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 = "4"
alsa.card_name = "AudioQuest DragonFly Cobalt v1."
alsa.long_card_name = "AudioQuest AudioQuest DragonFly Cobalt v1. at usb-0000:03:00.0-1, full speed"
alsa.driver_name = "snd_usb_audio"
device.bus_path = "pci-0000:03:00.0-usb-0:1:1.0"
sysfs.path = "/devices/pci0000:00/0000:00:01.3/0000:03:00.0/usb1/1-1/1-1:1.0/sound/card4"
udev.id = "usb-AudioQuest_AudioQuest_DragonFly_Cobalt_v1.0_AQDFCB0101011122-00"
device.bus = "usb"
device.vendor.id = "21b4"
device.vendor.name = "AudioQuest"
device.product.id = "0085"
device.product.name = "AudioQuest DragonFly Cobalt v1.0"
device.serial = "AudioQuest_AudioQuest_DragonFly_Cobalt_v1.0_AQDFCB0101011122"
device.string = "front:4"
device.buffering.buffer_size = "576000"
device.buffering.fragment_size = "288000"
device.access_mode = "mmap+timer"
device.profile.name = "analog-stereo"
device.profile.description = "Analog Stereo"
device.description = "AudioQuest DragonFly Cobalt v1.0 Analog Stereo"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-usb"
ports:
analog-output: Analog Output (priority 9900, latency offset 0 usec, available: unknown)
properties:
active port: <analog-output>
* index: 1
name: <alsa_output.usb-TC-Helicon_GoXLR-00.multichannel-output>
driver: <module-alsa-card.c>
flags: HARDWARE DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
state: RUNNING
suspend cause: (none)
priority: 9040
volume: front-left: 44390 / 68% / -10.15 dB, front-right: 43950 / 67% / -10.41 dB, rear-left: 0 / 0% / -inf dB, rear-right: 0 / 0% / -inf dB, front-center: 0 / 0% / -inf dB, lfe: 0 / 0% / -inf dB, side-left: 0 / 0% / -inf dB, side-right: 0 / 0% / -inf dB, aux0: 0 / 0% / -inf dB, aux1: 0 / 0% / -inf dB
balance -0.01
base volume: 65536 / 100% / 0.00 dB
volume steps: 65537
muted: no
current latency: 82.89 ms
max request: 140 KiB
max rewind: 140 KiB
monitor source: 2
sample spec: s32le 10ch 48000Hz
channel map: front-left,front-right,rear-left,rear-right,front-center,lfe,side-left,side-right,aux0,aux1
used by: 1
linked by: 1
configured latency: 75.00 ms; range is 0.50 .. 546.12 ms
card: 3 <alsa_card.usb-TC-Helicon_GoXLR-00>
module: 9
properties:
alsa.resolution_bits = "32"
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 = "GoXLR"
alsa.long_card_name = "TC-Helicon GoXLR at usb-0000:1e:00.3-2, high speed"
alsa.driver_name = "snd_usb_audio"
device.bus_path = "pci-0000:1e:00.3-usb-0:2:1.0"
sysfs.path = "/devices/pci0000:00/0000:00:07.1/0000:1e:00.3/usb5/5-2/5-2:1.0/sound/card2"
udev.id = "usb-TC-Helicon_GoXLR-00"
device.bus = "usb"
device.vendor.id = "1220"
device.vendor.name = "TC Electronic"
device.product.id = "8fe0"
device.product.name = "GoXLR"
device.serial = "TC-Helicon_GoXLR"
device.string = "hw:2"
device.buffering.buffer_size = "1048560"
device.buffering.fragment_size = "524280"
device.access_mode = "mmap+timer"
device.profile.name = "multichannel-output"
device.profile.description = "Multichannel"
device.description = "GoXLR Multichannel"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-usb"
index: 2
name: <alsa_output.pci-0000_1f_00.3.iec958-stereo>
driver: <module-alsa-card.c>
flags: HARDWARE HW_MUTE_CTRL DECIBEL_VOLUME LATENCY
state: IDLE
suspend cause: (none)
priority: 9038
volume: front-left: 58977 / 90% / -2.75 dB, front-right: 58977 / 90% / -2.75 dB
balance 0.00
base volume: 65536 / 100% / 0.00 dB
volume steps: 65537
muted: no
current latency: 100.69 ms
max request: 37 KiB
max rewind: 37 KiB
monitor source: 4
sample spec: s32le 2ch 48000Hz
channel map: front-left,front-right
Stereo
used by: 0
linked by: 0
fixed latency: 100.00 ms
card: 4 <alsa_card.pci-0000_1f_00.3>
module: 10
properties:
alsa.resolution_bits = "32"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALC1220 Digital"
alsa.id = "ALC1220 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 0xf7800000 irq 64"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:1f:00.3"
sysfs.path = "/devices/pci0000:00/0000:00:08.1/0000:1f: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 = "iec958:1"
device.buffering.buffer_size = "38400"
device.buffering.fragment_size = "9600"
device.access_mode = "mmap"
device.profile.name = "iec958-stereo"
device.profile.description = "Digital Stereo (IEC958)"
device.description = "Family 17h (Models 00h-0fh) HD Audio Controller Digital Stereo (IEC958)"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
ports:
iec958-stereo-output: Digital Output (S/PDIF) (priority 0, latency offset 0 usec, available: unknown)
properties:
active port: <iec958-stereo-output>
pacmd list-sink-inputs
1 sink input(s) available.
index: 6
driver: <protocol-native.c>
flags: START_CORKED
state: RUNNING
sink: 1 <alsa_output.usb-TC-Helicon_GoXLR-00.multichannel-output>
volume: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% / 0.00 dB
balance 0.00
muted: no
current latency: 121.92 ms
requested latency: 75.00 ms
sample spec: float32le 2ch 48000Hz
channel map: front-left,front-right
Stereo
resample method: copy
module: 15
client: 6 <Firefox>
properties:
media.name = "AudioStream"
application.name = "Firefox"
native-protocol.peer = "UNIX socket client"
native-protocol.version = "34"
application.process.id = "2140"
application.process.user = "ryan"
application.process.host = "JohnShepard"
application.process.binary = "firefox"
application.language = "en_US.UTF-8"
window.x11.display = ":1"
application.process.machine_id = "becc4748bcea48da86def31dddb5d239"
application.icon_name = "firefox"
module-stream-restore.id = "sink-input-by-application-name:Firefox"
Is there anything else I can try to get this fixed?
Offline
Have you tried Jack?
If I remember right Pulse isn't recommended for low latency applications.
Offline
I disabled PulseAudio and tried Jack and got the same audio stuttering. I again went through different combinations of Frames/Periods but there was no difference in the stuttering based on those settings.
Offline
If aplay -Dhw:2,0 stutters then all implementations that sit on top of it will usually stutter as well.
Maybe try and disable usb auto suspension and can you post a
sudo lsusb -vd 21b4:0085
Offline
I disabled USB autosuspend by adding
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash usbcore.autosuspend=-1"
in my /etc/default/grub (and regenerated grub config) and am still getting the stuttering.
sudo lsusb -vd 21b4:0085
prints nothing and exits with code 1.
Offline
Hmm weird I took those from the pulse outputs, check the direct output of lsusb and pass the vendorId:productId of the dragonfly (are there multiple different ones?)
Offline
Oh, my bad. I assumed that was for the GoXLR so I didn't have the Dragonfly plugged in when I ran the command. With the Dragonfly plugged in I get
Bus 001 Device 005: ID 21b4:0085 AudioQuest AudioQuest DragonFly Cobalt v1.0
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x21b4 AudioQuest
idProduct 0x0085
bcdDevice 1.10
iManufacturer 1 AudioQuest
iProduct 2 AudioQuest DragonFly Cobalt v1.0
iSerial 3 AQDFCB0101011122
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x0098
bNumInterfaces 3
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 70mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 0x0027
bInCollection 1
baInterfaceNr(0) 1
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 9
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bNrChannels 2
wChannelConfig 0x0003
Left Front (L)
Right Front (R)
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 5
bSourceID 9
bControlSize 2
bmaControls(0) 0x0003
Mute Control
Volume Control
iFeature 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 2
wTerminalType 0x0301 Speaker
bAssocTerminal 0
bSourceID 5
iTerminal 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 1
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioStreaming Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 9
bDelay 1 frames
wFormatTag 0x0001 PCM
AudioStreaming Interface Descriptor:
bLength 20
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 3
bBitResolution 24
bSamFreqType 4 Discrete
tSamFreq[ 0] 44100
tSamFreq[ 1] 48000
tSamFreq[ 2] 88200
tSamFreq[ 3] 96000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x024c 1x 588 bytes
bInterval 1
bRefresh 0
bSynchAddress 129
AudioStreaming Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0x0000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0003 1x 3 bytes
bInterval 1
bRefresh 5
bSynchAddress 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 5 DragonFly HID MQA
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.11
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 21
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 32
can't get device qualifier: Resource temporarily unavailable
can't get debug descriptor: Resource temporarily unavailable
Device Status: 0x0001
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