!!################################ !!ALSA Information Script v 0.4.65 !!################################ !!Script ran on: Sun Jan 3 17:14:18 UTC 2021 !!Linux Distribution !!------------------ Ubuntu 20.04.1 LTS \n \l DISTRIB_ID=Ubuntu DISTRIB_DESCRIPTION="Ubuntu 20.04.1 LTS" NAME="Ubuntu" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 20.04.1 LTS" HOME_URL="https://www.ubuntu.com/" SUPPORT_URL="https://help.ubuntu.com/" BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/" PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy" UBUNTU_CODENAME=focal Ubuntu 20.04.1 LTS (Focal Fossa) !!DMI Information !!--------------- Manufacturer: Product Name: Product Version: Firmware Version: System SKU: Board Vendor: Board Name: !!ACPI Device Status Information !!--------------- !!Kernel Information !!------------------ Kernel release: 5.4.0-1025-raspi Operating System: GNU/Linux Architecture: aarch64 Processor: aarch64 SMP Enabled: Yes !!ALSA Version !!------------ Driver version: k5.4.0-1025-raspi Library version: 1.2.2 Utilities version: 1.2.2 !!Loaded ALSA modules !!------------------- snd_bcm2835 snd_bcm2835 snd_usb_audio !!Sound Servers on this system !!---------------------------- Pulseaudio: Installed - Yes (/usr/bin/pulseaudio) Running - Yes !!Soundcards recognised by ALSA !!----------------------------- 0 [b1 ]: bcm2835_hdmi - bcm2835 HDMI 1 bcm2835 HDMI 1 1 [Headphones ]: bcm2835_headphonbcm2835 Headphones - bcm2835 Headphones bcm2835 Headphones 2 [gadget ]: USB-Audio - USB Webcam gadget Linux Foundation USB Webcam gadget at usb-0000:01:00.0-1.3, high speed !!PCI Soundcards installed in the system !!-------------------------------------- !!Modprobe options (Sound related) !!-------------------------------- snd_pcsp: index=-2 snd_usb_audio: index=-2 snd_atiixp_modem: index=-2 snd_intel8x0m: index=-2 snd_via82xx_modem: index=-2 snd_atiixp_modem: index=-2 snd_intel8x0m: index=-2 snd_via82xx_modem: index=-2 snd_usb_audio: index=-2 snd_usb_caiaq: index=-2 snd_usb_ua101: index=-2 snd_usb_us122l: index=-2 snd_usb_usx2y: index=-2 snd_cmipci: mpu_port=0x330 fm_port=0x388 snd_pcsp: index=-2 snd_usb_audio: index=-2 snd_bcm2835: enable_compat_alsa=0 snd_bcm2835: enable_hdmi=1 snd_bcm2835: enable_headphones=1 !!Loaded sound module options !!--------------------------- !!Module: snd_bcm2835 enable_compat_alsa : N enable_hdmi : Y enable_headphones : Y force_bulk : N !!Module: snd_bcm2835 enable_compat_alsa : N enable_hdmi : Y enable_headphones : Y force_bulk : N !!Module: snd_usb_audio autoclock : Y device_setup : 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 enable : Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y id : (null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null) ignore_ctl_error : N index : -2,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1 pid : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1 quirk_alias : (null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null) use_vmalloc : Y vid : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1 !!USB Descriptors !!--------------- --startcollapse-- Bus 001 Device 003: ID 1d6b:0102 Linux Foundation EEM Gadget Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 239 Miscellaneous Device bDeviceSubClass 2 bDeviceProtocol 1 Interface Association bMaxPacketSize0 64 idVendor 0x1d6b Linux Foundation idProduct 0x0102 EEM Gadget bcdDevice 4.09 iManufacturer 1 Linux Foundation iProduct 2 USB Webcam gadget iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 0x040f bNumInterfaces 4 bConfigurationValue 1 iConfiguration 4 Video bmAttributes 0xc0 Self Powered MaxPower 2mA Interface Association: bLength 8 bDescriptorType 11 bFirstInterface 0 bInterfaceCount 2 bFunctionClass 14 Video bFunctionSubClass 3 Video Interface Collection bFunctionProtocol 0 iFunction 5 UVC HD Camera Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 14 Video bInterfaceSubClass 1 Video Control bInterfaceProtocol 0 iInterface 5 UVC HD Camera VideoControl Interface Descriptor: bLength 13 bDescriptorType 36 bDescriptorSubtype 1 (HEADER) bcdUVC 1.00 wTotalLength 0x0069 dwClockFrequency 48.000000MHz bInCollection 1 baInterfaceNr( 0) 1 VideoControl Interface Descriptor: bLength 18 bDescriptorType 36 bDescriptorSubtype 2 (INPUT_TERMINAL) bTerminalID 1 wTerminalType 0x0201 Camera Sensor bAssocTerminal 0 iTerminal 0 wObjectiveFocalLengthMin 0 wObjectiveFocalLengthMax 0 wOcularFocalLength 0 bControlSize 3 bmControls 0x00000002 Auto-Exposure Mode VideoControl Interface Descriptor: bLength 11 bDescriptorType 36 bDescriptorSubtype 5 (PROCESSING_UNIT) Warning: Descriptor too short bUnitID 4 bSourceID 1 wMaxMultiplier 16384 bControlSize 2 bmControls 0x0000041f Brightness Contrast Hue Saturation Sharpness Power Line Frequency iProcessing 0 bmVideoStandards 0x1b None NTSC - 525/60 SECAM - 625/50 NTSC - 625/50 VideoControl Interface Descriptor: bLength 27 bDescriptorType 36 bDescriptorSubtype 6 (EXTENSION_UNIT) bUnitID 6 guidExtensionCode {23e49ed0-1178-4f31-ae52-d2fb8a8d3b48} bNumControl 14 bNrPins 1 baSourceID( 0) 4 bControlSize 2 bmControls( 0) 0xff bmControls( 1) 0x6f iExtension 0 VideoControl Interface Descriptor: bLength 27 bDescriptorType 36 bDescriptorSubtype 6 (EXTENSION_UNIT) bUnitID 2 guidExtensionCode {2c49d16a-32b8-4485-3ea8-643a152362f2} bNumControl 6 bNrPins 1 baSourceID( 0) 6 bControlSize 2 bmControls( 0) 0x3f bmControls( 1) 0x00 iExtension 0 VideoControl Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 3 (OUTPUT_TERMINAL) bTerminalID 3 wTerminalType 0x0101 USB Streaming bAssocTerminal 0 bSourceID 2 iTerminal 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0010 1x 16 bytes bInterval 8 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 14 Video bInterfaceSubClass 2 Video Streaming bInterfaceProtocol 0 iInterface 6 Video Streaming VideoStreaming Interface Descriptor: bLength 17 bDescriptorType 36 bDescriptorSubtype 1 (INPUT_HEADER) bNumFormats 4 wTotalLength 0x02fb bEndPointAddress 129 bmInfo 0 bTerminalLink 3 bStillCaptureMethod 0 bTriggerSupport 0 bTriggerUsage 0 bControlSize 1 bmaControls( 0) 0 bmaControls( 1) 0 bmaControls( 2) 4 bmaControls( 3) 4 VideoStreaming Interface Descriptor: bLength 11 bDescriptorType 36 bDescriptorSubtype 6 (FORMAT_MJPEG) bFormatIndex 1 bNumFrameDescriptors 5 bFlags 0 Fixed-size samples: No bDefaultFrameIndex 3 bAspectRatioX 0 bAspectRatioY 0 bmInterlaceFlags 0x00 Interlaced stream or variable: No Fields per frame: 1 fields Field 1 first: No Field pattern: Field 1 only bCopyProtect 0 VideoStreaming Interface Descriptor: bLength 38 bDescriptorType 36 bDescriptorSubtype 7 (FRAME_MJPEG) bFrameIndex 1 bmCapabilities 0x00 Still image unsupported wWidth 640 wHeight 480 dwMinBitRate 49152000 dwMaxBitRate 147456000 dwMaxVideoFrameBufferSize 614400 dwDefaultFrameInterval 333333 bFrameIntervalType 3 dwFrameInterval( 0) 333333 dwFrameInterval( 1) 666666 dwFrameInterval( 2) 1000000 VideoStreaming Interface Descriptor: bLength 38 bDescriptorType 36 bDescriptorSubtype 7 (FRAME_MJPEG) bFrameIndex 2 bmCapabilities 0x00 Still image unsupported wWidth 1280 wHeight 720 dwMinBitRate 147456000 dwMaxBitRate 442368000 dwMaxVideoFrameBufferSize 1843200 dwDefaultFrameInterval 333333 bFrameIntervalType 3 dwFrameInterval( 0) 333333 dwFrameInterval( 1) 666666 dwFrameInterval( 2) 1000000 VideoStreaming Interface Descriptor: bLength 38 bDescriptorType 36 bDescriptorSubtype 7 (FRAME_MJPEG) bFrameIndex 3 bmCapabilities 0x00 Still image unsupported wWidth 1920 wHeight 1080 dwMinBitRate 331776000 dwMaxBitRate 995328000 dwMaxVideoFrameBufferSize 4147200 dwDefaultFrameInterval 333333 bFrameIntervalType 3 dwFrameInterval( 0) 333333 dwFrameInterval( 1) 666666 dwFrameInterval( 2) 1000000 VideoStreaming Interface Descriptor: bLength 38 bDescriptorType 36 bDescriptorSubtype 7 (FRAME_MJPEG) bFrameIndex 5 bmCapabilities 0x00 Still image unsupported wWidth 2560 wHeight 1440 dwMinBitRate 589824000 dwMaxBitRate 589824000 dwMaxVideoFrameBufferSize 7372800 dwDefaultFrameInterval 500000 bFrameIntervalType 3 dwFrameInterval( 0) 500000 dwFrameInterval( 1) 666666 dwFrameInterval( 2) 1000000 VideoStreaming Interface Descriptor: bLength 38 bDescriptorType 36 bDescriptorSubtype 7 (FRAME_MJPEG) bFrameIndex 4 bmCapabilities 0x00 Still image unsupported wWidth 2304 wHeight 1296 dwMinBitRate 477757440 dwMaxBitRate 1433272320 dwMaxVideoFrameBufferSize 5971968 dwDefaultFrameInterval 333333 bFrameIntervalType 3 dwFrameInterval( 0) 333333 dwFrameInterval( 1) 666666 dwFrameInterval( 2) 1000000 VideoStreaming Interface Descriptor: bLength 27 bDescriptorType 36 bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED) bFormatIndex 2 bNumFrameDescriptors 2 guidFormat {32595559-0000-0010-8000-00aa00389b71} bBitsPerPixel 16 bDefaultFrameIndex 1 bAspectRatioX 0 bAspectRatioY 0 bmInterlaceFlags 0x00 Interlaced stream or variable: No Fields per frame: 2 fields Field 1 first: No Field pattern: Field 1 only bCopyProtect 0 VideoStreaming Interface Descriptor: bLength 38 bDescriptorType 36 bDescriptorSubtype 5 (FRAME_UNCOMPRESSED) bFrameIndex 1 bmCapabilities 0x00 Still image unsupported wWidth 640 wHeight 480 dwMinBitRate 49152000 dwMaxBitRate 147456000 dwMaxVideoFrameBufferSize 614400 dwDefaultFrameInterval 333333 bFrameIntervalType 3 dwFrameInterval( 0) 333333 dwFrameInterval( 1) 666666 dwFrameInterval( 2) 1000000 VideoStreaming Interface Descriptor: bLength 38 bDescriptorType 36 bDescriptorSubtype 5 (FRAME_UNCOMPRESSED) bFrameIndex 2 bmCapabilities 0x00 Still image unsupported wWidth 1280 wHeight 720 dwMinBitRate 147456000 dwMaxBitRate 442368000 dwMaxVideoFrameBufferSize 1843200 dwDefaultFrameInterval 333333 bFrameIntervalType 3 dwFrameInterval( 0) 333333 dwFrameInterval( 1) 666666 dwFrameInterval( 2) 1000000 VideoStreaming Interface Descriptor: bLength 28 bDescriptorType 36 bDescriptorSubtype 16 (FORMAT_FRAME_BASED) bFormatIndex 3 bNumFrameDescriptors 5 guidFormat {34363248-0000-0010-8000-00aa00389b71} bBitsPerPixel 16 bDefaultFrameIndex 4 bAspectRatioX 0 bAspectRatioY 0 bmInterlaceFlags 0x00 Interlaced stream or variable: No Fields per frame: 2 fields Field 1 first: No Field pattern: Field 1 only bCopyProtect 0 bVariableSize 1 VideoStreaming Interface Descriptor: bLength 38 bDescriptorType 36 bDescriptorSubtype 17 (FRAME_FRAME_BASED) bFrameIndex 1 bmCapabilities 0x00 Still image unsupported wWidth 640 wHeight 480 dwMinBitRate 49152000 dwMaxBitRate 147456000 dwDefaultFrameInterval 333333 bFrameIntervalType 3 dwBytesPerLine 0 dwFrameInterval( 0) 333333 dwFrameInterval( 1) 666666 dwFrameInterval( 2) 1000000 VideoStreaming Interface Descriptor: bLength 38 bDescriptorType 36 bDescriptorSubtype 17 (FRAME_FRAME_BASED) bFrameIndex 2 bmCapabilities 0x00 Still image unsupported wWidth 1280 wHeight 720 dwMinBitRate 147456000 dwMaxBitRate 442368000 dwDefaultFrameInterval 333333 bFrameIntervalType 3 dwBytesPerLine 0 dwFrameInterval( 0) 333333 dwFrameInterval( 1) 666666 dwFrameInterval( 2) 1000000 VideoStreaming Interface Descriptor: bLength 38 bDescriptorType 36 bDescriptorSubtype 17 (FRAME_FRAME_BASED) bFrameIndex 3 bmCapabilities 0x00 Still image unsupported wWidth 1920 wHeight 1080 dwMinBitRate 331776000 dwMaxBitRate 995328000 dwDefaultFrameInterval 333333 bFrameIntervalType 3 dwBytesPerLine 0 dwFrameInterval( 0) 333333 dwFrameInterval( 1) 666666 dwFrameInterval( 2) 1000000 VideoStreaming Interface Descriptor: bLength 38 bDescriptorType 36 bDescriptorSubtype 17 (FRAME_FRAME_BASED) bFrameIndex 4 bmCapabilities 0x00 Still image unsupported wWidth 2304 wHeight 1296 dwMinBitRate 477757440 dwMaxBitRate 1433272320 dwDefaultFrameInterval 333333 bFrameIntervalType 3 dwBytesPerLine 0 dwFrameInterval( 0) 333333 dwFrameInterval( 1) 666666 dwFrameInterval( 2) 1000000 VideoStreaming Interface Descriptor: bLength 38 bDescriptorType 36 bDescriptorSubtype 17 (FRAME_FRAME_BASED) bFrameIndex 5 bmCapabilities 0x00 Still image unsupported wWidth 2560 wHeight 1440 dwMinBitRate 589824000 dwMaxBitRate 589824000 dwDefaultFrameInterval 500000 bFrameIntervalType 3 dwBytesPerLine 0 dwFrameInterval( 0) 500000 dwFrameInterval( 1) 666666 dwFrameInterval( 2) 1000000 VideoStreaming Interface Descriptor: bLength 28 bDescriptorType 36 bDescriptorSubtype 16 (FORMAT_FRAME_BASED) bFormatIndex 4 bNumFrameDescriptors 5 guidFormat {35363248-0000-0010-8000-00aa00389b71} bBitsPerPixel 16 bDefaultFrameIndex 4 bAspectRatioX 0 bAspectRatioY 0 bmInterlaceFlags 0x00 Interlaced stream or variable: No Fields per frame: 2 fields Field 1 first: No Field pattern: Field 1 only bCopyProtect 0 bVariableSize 1 VideoStreaming Interface Descriptor: bLength 38 bDescriptorType 36 bDescriptorSubtype 17 (FRAME_FRAME_BASED) bFrameIndex 1 bmCapabilities 0x00 Still image unsupported wWidth 640 wHeight 480 dwMinBitRate 49152000 dwMaxBitRate 147456000 dwDefaultFrameInterval 333333 bFrameIntervalType 3 dwBytesPerLine 0 dwFrameInterval( 0) 333333 dwFrameInterval( 1) 666666 dwFrameInterval( 2) 1000000 VideoStreaming Interface Descriptor: bLength 38 bDescriptorType 36 bDescriptorSubtype 17 (FRAME_FRAME_BASED) bFrameIndex 2 bmCapabilities 0x00 Still image unsupported wWidth 1280 wHeight 720 dwMinBitRate 147456000 dwMaxBitRate 442368000 dwDefaultFrameInterval 333333 bFrameIntervalType 3 dwBytesPerLine 0 dwFrameInterval( 0) 333333 dwFrameInterval( 1) 666666 dwFrameInterval( 2) 1000000 VideoStreaming Interface Descriptor: bLength 38 bDescriptorType 36 bDescriptorSubtype 17 (FRAME_FRAME_BASED) bFrameIndex 3 bmCapabilities 0x00 Still image unsupported wWidth 1920 wHeight 1080 dwMinBitRate 331776000 dwMaxBitRate 995328000 dwDefaultFrameInterval 333333 bFrameIntervalType 3 dwBytesPerLine 0 dwFrameInterval( 0) 333333 dwFrameInterval( 1) 666666 dwFrameInterval( 2) 1000000 VideoStreaming Interface Descriptor: bLength 38 bDescriptorType 36 bDescriptorSubtype 17 (FRAME_FRAME_BASED) bFrameIndex 4 bmCapabilities 0x00 Still image unsupported wWidth 2304 wHeight 1296 dwMinBitRate 477757440 dwMaxBitRate 1433272320 dwDefaultFrameInterval 333333 bFrameIntervalType 3 dwBytesPerLine 0 dwFrameInterval( 0) 333333 dwFrameInterval( 1) 666666 dwFrameInterval( 2) 1000000 VideoStreaming Interface Descriptor: bLength 38 bDescriptorType 36 bDescriptorSubtype 17 (FRAME_FRAME_BASED) bFrameIndex 5 bmCapabilities 0x00 Still image unsupported wWidth 2560 wHeight 1440 dwMinBitRate 589824000 dwMaxBitRate 589824000 dwDefaultFrameInterval 500000 bFrameIntervalType 3 dwBytesPerLine 0 dwFrameInterval( 0) 500000 dwFrameInterval( 1) 666666 dwFrameInterval( 2) 1000000 VideoStreaming Interface Descriptor: bLength 6 bDescriptorType 36 bDescriptorSubtype 13 (COLORFORMAT) bColorPrimaries 1 (BT.709,sRGB) bTransferCharacteristics 1 (BT.709) bMatrixCoefficients 4 (SMPTE 170M (BT.601)) Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 14 Video bInterfaceSubClass 2 Video Streaming bInterfaceProtocol 0 iInterface 6 Video Streaming Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x1400 3x 1024 bytes bInterval 1 Interface Association: bLength 8 bDescriptorType 11 bFirstInterface 2 bInterfaceCount 2 bFunctionClass 1 Audio bFunctionSubClass 0 bFunctionProtocol 0 iFunction 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 1 Control Device bInterfaceProtocol 0 iInterface 8 UAC HD Camera AudioControl Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 1 (HEADER) bcdADC 1.00 wTotalLength 0x0027 bInCollection 1 baInterfaceNr(0) 3 AudioControl Interface Descriptor: bLength 12 bDescriptorType 36 bDescriptorSubtype 2 (INPUT_TERMINAL) bTerminalID 3 wTerminalType 0x0201 Microphone bAssocTerminal 0 bNrChannels 1 wChannelConfig 0x0003 Left Front (L) Right Front (R) iChannelNames 15 Capture Channels iTerminal 14 Capture Input terminal AudioControl Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 6 (FEATURE_UNIT) bUnitID 5 bSourceID 3 bControlSize 2 bmaControls(0) 0x0003 Mute Control Volume Control iFeature 0 AudioControl Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 3 (OUTPUT_TERMINAL) bTerminalID 4 wTerminalType 0x0101 USB Streaming bAssocTerminal 0 bSourceID 5 iTerminal 16 Capture Output terminal Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 17 Capture Inactive Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 18 Capture Active AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 4 bDelay 1 frames wFormatTag 0x0001 PCM AudioStreaming Interface Descriptor: bLength 11 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 1 bSubframeSize 2 bBitResolution 16 bSamFreqType 1 Discrete tSamFreq[ 0] 16000 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x0020 1x 32 bytes bInterval 4 bRefresh 0 bSynchAddress 0 AudioStreaming Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x01 Sampling Frequency bLockDelayUnits 0 Undefined wLockDelay 0x0000 Device Qualifier (for other device speed): bLength 10 bDescriptorType 6 bcdUSB 2.00 bDeviceClass 239 Miscellaneous Device bDeviceSubClass 2 bDeviceProtocol 1 Interface Association bMaxPacketSize0 64 bNumConfigurations 1 Device Status: 0x0001 Self Powered --endcollapse-- !!USB Stream information !!---------------------- --startcollapse-- Linux Foundation USB Webcam gadget at usb-0000:01:00.0-1.3, high speed : USB Audio Capture: Status: Stop Interface 3 Altset 1 Format: S16_LE Channels: 1 Endpoint: 2 IN (ASYNC) Rates: 16000 Data packet interval: 1000 us Bits: 16 --endcollapse-- !!USB Mixer information !!--------------------- --startcollapse-- USB Mixer: usb_id=0x1d6b0102, ctrlif=2, ctlerr=0 Card: Linux Foundation USB Webcam gadget at usb-0000:01:00.0-1.3, high speed Unit: 5 Control: name="Capture Input terminal Capture Volume", index=0 Info: id=5, control=2, cmask=0x0, channels=1, type="S16" Volume: min=512, max=5120, dBmin=200, dBmax=2000 Unit: 5 Control: name="Capture Input terminal Capture Switch", index=0 Info: id=5, control=1, cmask=0x0, channels=1, type="INV_BOOLEAN" Volume: min=0, max=1, dBmin=0, dBmax=0 --endcollapse-- !!ALSA Device nodes !!----------------- crw-rw---- 1 root audio 116, 3 Apr 1 2020 /dev/snd/controlC0 crw-rw---- 1 root audio 116, 5 Apr 1 2020 /dev/snd/controlC1 crw-rw---- 1 root audio 116, 7 Apr 1 2020 /dev/snd/controlC2 crw-rw---- 1 root audio 116, 2 Apr 1 2020 /dev/snd/pcmC0D0p crw-rw---- 1 root audio 116, 4 Apr 1 2020 /dev/snd/pcmC1D0p crw-rw---- 1 root audio 116, 6 Apr 1 2020 /dev/snd/pcmC2D0c crw-rw---- 1 root audio 116, 1 Apr 1 2020 /dev/snd/seq crw-rw---- 1 root audio 116, 33 Apr 1 2020 /dev/snd/timer /dev/snd/by-id: total 0 drwxr-xr-x 2 root root 60 Apr 1 2020 . drwxr-xr-x 4 root root 240 Apr 1 2020 .. lrwxrwxrwx 1 root root 12 Apr 1 2020 usb-Linux_Foundation_USB_Webcam_gadget-02 -> ../controlC2 /dev/snd/by-path: total 0 drwxr-xr-x 2 root root 80 Apr 1 2020 . drwxr-xr-x 4 root root 240 Apr 1 2020 .. lrwxrwxrwx 1 root root 12 Apr 1 2020 platform-bcm2835_audio -> ../controlC0 lrwxrwxrwx 1 root root 12 Apr 1 2020 platform-fd500000.pcie-pci-0000:01:00.0-usb-0:1.3:1.2 -> ../controlC2 !!Aplay/Arecord output !!-------------------- APLAY **** List of PLAYBACK Hardware Devices **** card 0: b1 [bcm2835 HDMI 1], device 0: bcm2835 HDMI 1 [bcm2835 HDMI 1] Subdevices: 3/4 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 Subdevice #2: subdevice #2 Subdevice #3: subdevice #3 card 1: Headphones [bcm2835 Headphones], device 0: bcm2835 Headphones [bcm2835 Headphones] Subdevices: 4/4 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 Subdevice #2: subdevice #2 Subdevice #3: subdevice #3 ARECORD **** List of CAPTURE Hardware Devices **** card 2: gadget [USB Webcam gadget], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0 !!Amixer output !!------------- !!-------Mixer controls for card b1 Card hw:0 'b1'/'bcm2835 HDMI 1' Mixer name : 'Broadcom Mixer' Components : '' Controls : 2 Simple ctrls : 1 Simple mixer control 'HDMI',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback -10239 - 400 Mono: Playback 0 [96%] [0.00dB] [on] !!-------Mixer controls for card Headphones Card hw:1 'Headphones'/'bcm2835 Headphones' Mixer name : 'Broadcom Mixer' Components : '' Controls : 2 Simple ctrls : 1 Simple mixer control 'Headphone',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback -10239 - 400 Mono: Playback -58 [96%] [-0.58dB] [on] !!-------Mixer controls for card gadget Card hw:2 'gadget'/'Linux Foundation USB Webcam gadget at usb-0000:01:00.0-1.3, high speed' Mixer name : 'USB Mixer' Components : 'USB1d6b:0102' Controls : 4 Simple ctrls : 1 Simple mixer control 'Capture Input terminal',0 Capabilities: cvolume cvolume-joined cswitch cswitch-joined Capture channels: Mono Limits: Capture 0 - 1152 Mono: Capture 384 [33%] [8.00dB] [on] !!Alsactl output !!-------------- --startcollapse-- state.b1 { control.1 { iface MIXER name 'HDMI Playback Volume' value 0 comment { access 'read write' type INTEGER count 1 range '-10239 - 400' dbmin -9999999 dbmax 400 dbvalue.0 0 } } control.2 { iface MIXER name 'HDMI Playback Switch' value true comment { access 'read write' type BOOLEAN count 1 } } } state.Headphones { control.1 { iface MIXER name 'Headphone Playback Volume' value -58 comment { access 'read write' type INTEGER count 1 range '-10239 - 400' dbmin -9999999 dbmax 400 dbvalue.0 -58 } } control.2 { iface MIXER name 'Headphone Playback Switch' value true comment { access 'read write' type BOOLEAN count 1 } } } state.gadget { control.1 { iface PCM name 'Capture Channel Map' value 0 comment { access read type INTEGER count 1 range '0 - 36' } } control.2 { iface MIXER name 'Capture Input terminal Capture Switch' value true comment { access 'read write' type BOOLEAN count 1 } } control.3 { iface MIXER name 'Capture Input terminal Capture Volume' value 384 comment { access 'read write' type INTEGER count 1 range '0 - 1152' dbmin 200 dbmax 2000 dbvalue.0 800 } } control.4 { iface CARD name 'Keep Interface' value false comment { access 'read write' type BOOLEAN count 1 } } } --endcollapse-- !!All Loaded Modules !!------------------ ac97_bus aes_neon_blk aes_neon_bs af_alg algif_hash algif_skcipher autofs4 bcm2835_codec bcm2835_isp bcm2835_mmal_vchiq bcm2835_v4l2 bluetooth bnep brcmfmac brcmutil btbcm btintel btqca btsdio cfg80211 crct10dif_ce cryptd crypto_simd drm drm_kms_helper ecc ecdh_generic fb_sys_fops gpu_sched hci_uart hid_generic hid_logitech_dj hid_logitech_hidpp input_leds ip_tables joydev lp mc parport phy_generic ppdev raspberrypi_hwmon rfcomm rpivid_mem sch_fq_codel snd snd_bcm2835 snd_compress snd_hwdep snd_mixer_oss snd_pcm snd_pcm_dmaengine snd_pcm_oss snd_rawmidi snd_seq snd_seq_device snd_seq_dummy snd_seq_midi snd_seq_midi_event snd_seq_oss snd_soc_core snd_timer snd_usb_audio snd_usbmidi_lib spidev st syscopyarea sysfillrect sysimgblt uio uio_pdrv_genirq usbhid uvcvideo v3d v4l2_mem2mem vc4 vc_sm_cma videobuf2_common videobuf2_dma_contig videobuf2_memops videobuf2_v4l2 videobuf2_vmalloc videodev x_tables !!ALSA/HDA dmesg !!-------------- [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 2015744 [ 0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=0 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 snd_bcm2835.enable_headphones=1 video=HDMI-A-1:1680x1050M@60 smsc95xx.macaddr=DC:A6:32:DC:02:B2 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 net.ifnames=0 dwc_otg.lpm_enable=0 console=tty1 root=LABEL=writable rootfstype=ext4 elevator=deadline rootwait fixrtc quiet splash quiet splash [ 0.000000] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, linear) -- [ 2.622229] usb 1-1.3: Manufacturer: Linux Foundation [ 2.638475] snd_pcm_dmaengine: Unknown symbol snd_pcm_format_physical_width (err -2) [ 2.638493] snd_pcm_dmaengine: Unknown symbol snd_pcm_hw_constraint_integer (err -2) [ 2.638500] snd_pcm_dmaengine: Unknown symbol snd_pcm_period_elapsed (err -2) [ 2.705149] usb 1-1.4: new full-speed USB device number 4 using xhci_hcd -- [ 10.298390] usbcore: registered new interface driver brcmfmac [ 10.502846] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned. [ 10.513734] bcm2835_audio bcm2835_audio: card created with 4 channels -- [ 10.687734] usb 1-1.3: [5] FU [Capture Input terminal Capture Volume] ch = 1, val = 512/5120/4 [ 10.690511] usbcore: registered new interface driver snd-usb-audio [ 10.705793] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4345/6 wl0: Mar 23 2020 02:19:54 version 7.45.206 (r725000 CY) FWID 01-88ee44ea !!Packages installed !!-------------------- ii alsa-topology-conf 1.2.2-1 all ALSA topology configuration files ii alsa-ucm-conf 1.2.2-1ubuntu0.5 all ALSA Use Case Manager configuration files ii alsa-utils 1.2.2-1ubuntu2 arm64 Utilities for configuring and using ALSA