!!################################ !!ALSA Information Script v 0.5.1 !!################################ !!Script ran on: Mon Jul 21 17:38:22 UTC 2025 !!Linux Distribution !!------------------ ID_LIKE=debian !!DMI Information !!--------------- Manufacturer: Product Name: Product Version: Firmware Version: System SKU: Board Vendor: Board Name: !!ACPI Device Status Information !!--------------- !!Kernel Information !!------------------ Kernel release: 6.12.34 rpt-rpi-v7 Operating System: GNU/Linux Architecture: armv7l Processor: unknown SMP Enabled: Yes !!ALSA Version !!------------ Driver version: k6.12.34 rpt-rpi-v7 Library version: 1.2.8 Utilities version: 1.2.8 !!Loaded ALSA modules !!------------------- snd_bcm2835 (card 0) snd_usb_audio (card 1) vc4 (card 2) !!Sound Servers on this system !!---------------------------- No sound servers found. !!Soundcards recognised by ALSA !!----------------------------- 0 [Headphones ]: bcm2835_headpho - bcm2835 Headphones bcm2835 Headphones 1 [Audio ]: USB-Audio - USB Audio Generic USB Audio at usb-3f980000.usb-1.3, full speed 2 [vc4hdmi ]: vc4-hdmi - vc4-hdmi vc4-hdmi !!PCI Soundcards installed in the system !!-------------------------------------- !!Modprobe options (Sound related) !!-------------------------------- snd_pcsp: index=-2 snd_atiixp_modem: index=-2 snd_intel8x0m: index=-2 snd_via82xx_modem: index=-2 snd_bcm2835: enable_headphones=0 snd_bcm2835: enable_headphones=1 snd_bcm2835: enable_hdmi=1 snd_bcm2835: enable_hdmi=0 !!Loaded sound module options !!--------------------------- !!Module: snd_bcm2835 enable_hdmi : N enable_headphones : Y force_bulk : N num_channels : 8 !!Module: snd_usb_audio autoclock : Y delayed_register : (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) 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 implicit_fb : N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N index : -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 lowlatency : Y 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) quirk_flags : 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 skip_validation : N 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 !!Module: vc4 fkms_max_refresh_rate : 85 force_hotplug : 0 tv_norm : !!Sysfs card info !!--------------- !!Card: /sys/class/sound/card0 Driver: /sys/bus/vchiq-bus/drivers/bcm2835-audio Tree: !!Card: /sys/class/sound/card1 Driver: /sys/bus/usb/drivers/snd-usb-audio Tree: !!Card: /sys/class/sound/card2 Driver: /sys/bus/platform/drivers/vc4_hdmi Tree: !!USB Descriptors !!--------------- --startcollapse-- Bus 001 Device 004: ID 0020:0b21 Generic USB Audio Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.01 bDeviceClass 239 Miscellaneous Device bDeviceSubClass 2 bDeviceProtocol 1 Interface Association bMaxPacketSize0 64 idVendor 0x0020 idProduct 0x0b21 bcdDevice 26.81 iManufacturer 1 Generic iProduct 2 USB Audio iSerial 3 20210726905926 bNumConfigurations 3 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 0x01a7 bNumInterfaces 5 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xa0 (Bus Powered) Remote Wakeup MaxPower 300mA Interface Association: bLength 8 bDescriptorType 11 bFirstInterface 0 bInterfaceCount 3 bFunctionClass 1 Audio bFunctionSubClass 0 bFunctionProtocol 32 iFunction 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 1 Control Device bInterfaceProtocol 32 iInterface 0 AudioControl Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 1 (HEADER) bcdADC 2.00 bCategory 4 wTotalLength 0x0091 bmControls 0x00 AudioControl Interface Descriptor: bLength 17 bDescriptorType 36 bDescriptorSubtype 2 (INPUT_TERMINAL) bTerminalID 1 wTerminalType 0x0101 USB Streaming bAssocTerminal 0 bCSourceID 9 bNrChannels 2 bmChannelConfig 0x00000003 Front Left (FL) Front Right (FR) iChannelNames 0 bmControls 0x0000 iTerminal 0 AudioControl Interface Descriptor: bLength 18 bDescriptorType 36 bDescriptorSubtype 6 (FEATURE_UNIT) bUnitID 2 bSourceID 8 bmaControls(0) 0x00000003 Mute Control (read/write) bmaControls(1) 0x0000000c Volume Control (read/write) bmaControls(2) 0x0000000c Volume Control (read/write) iFeature 0 AudioControl Interface Descriptor: bLength 12 bDescriptorType 36 bDescriptorSubtype 3 (OUTPUT_TERMINAL) bTerminalID 3 wTerminalType 0x0402 Headset bAssocTerminal 4 bSourceID 2 bCSourceID 9 bmControls 0x0000 iTerminal 0 AudioControl Interface Descriptor: bLength 17 bDescriptorType 36 bDescriptorSubtype 2 (INPUT_TERMINAL) bTerminalID 4 wTerminalType 0x0402 Headset bAssocTerminal 3 bCSourceID 10 bNrChannels 1 bmChannelConfig 0x00000004 Front Center (FC) iChannelNames 0 bmControls 0x0000 iTerminal 0 AudioControl Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 6 (FEATURE_UNIT) bUnitID 5 bSourceID 4 bmaControls(0) 0x00000003 Mute Control (read/write) bmaControls(1) 0x0000000c Volume Control (read/write) iFeature 0 AudioControl Interface Descriptor: bLength 12 bDescriptorType 36 bDescriptorSubtype 3 (OUTPUT_TERMINAL) bTerminalID 6 wTerminalType 0x0101 USB Streaming bAssocTerminal 0 bSourceID 5 bCSourceID 10 bmControls 0x0000 iTerminal 0 AudioControl Interface Descriptor: bLength 14 bDescriptorType 36 bDescriptorSubtype 6 (FEATURE_UNIT) bUnitID 7 bSourceID 4 bmaControls(0) 0x00000003 Mute Control (read/write) bmaControls(1) 0x0000000c Volume Control (read/write) iFeature 0 AudioControl Interface Descriptor: bLength 16 bDescriptorType 36 bDescriptorSubtype 4 (MIXER_UNIT) bUnitID 8 bNrInPins 2 baSourceID(0) 1 baSourceID(1) 7 bNrChannels 2 bmChannelConfig 0x00000003 Front Left (FL) Front Right (FR) iChannelNames 0 bmMixerControls(0) 0x00 bmControls 0x00 iMixer 0 AudioControl Interface Descriptor: bLength 8 bDescriptorType 36 bDescriptorSubtype 10 (CLOCK_SOURCE) bClockID 9 bmAttributes 7 Internal programmable clock (synchronized to SOF) bmControls 0x07 Clock Frequency Control (read/write) Clock Validity Control (read-only) bAssocTerminal 0 iClockSource 0 AudioControl Interface Descriptor: bLength 8 bDescriptorType 36 bDescriptorSubtype 10 (CLOCK_SOURCE) bClockID 10 bmAttributes 7 Internal programmable clock (synchronized to SOF) bmControls 0x07 Clock Frequency Control (read/write) Clock Validity Control (read-only) bAssocTerminal 0 iClockSource 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 32 iInterface 4 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 32 iInterface 4 AudioStreaming Interface Descriptor: bLength 16 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 1 bmControls 0x05 Active Alternate Setting Control (read-only) Valid Alternate Setting Control (read-only) bFormatType 1 bmFormats 0x00000001 PCM bNrChannels 2 bmChannelConfig 0x00000003 Front Left (FL) Front Right (FR) iChannelNames 0 AudioStreaming Interface Descriptor: bLength 6 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bSubslotSize 3 bBitResolution 24 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 13 Transfer Type Isochronous Synch Type Synchronous Usage Type Data wMaxPacketSize 0x0120 1x 288 bytes bInterval 1 AudioStreaming Endpoint Descriptor: bLength 8 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x00 bmControls 0x00 bLockDelayUnits 1 Milliseconds wLockDelay 0x0064 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 2 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 32 iInterface 4 AudioStreaming Interface Descriptor: bLength 16 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 1 bmControls 0x05 Active Alternate Setting Control (read-only) Valid Alternate Setting Control (read-only) bFormatType 1 bmFormats 0x00000001 PCM bNrChannels 2 bmChannelConfig 0x00000003 Front Left (FL) Front Right (FR) iChannelNames 0 AudioStreaming Interface Descriptor: bLength 6 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bSubslotSize 2 bBitResolution 16 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 13 Transfer Type Isochronous Synch Type Synchronous Usage Type Data wMaxPacketSize 0x00c0 1x 192 bytes bInterval 1 AudioStreaming Endpoint Descriptor: bLength 8 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x00 bmControls 0x00 bLockDelayUnits 1 Milliseconds wLockDelay 0x0064 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 32 iInterface 5 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 32 iInterface 5 AudioStreaming Interface Descriptor: bLength 16 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 6 bmControls 0x05 Active Alternate Setting Control (read-only) Valid Alternate Setting Control (read-only) bFormatType 1 bmFormats 0x00000001 PCM bNrChannels 1 bmChannelConfig 0x00000004 Front Center (FC) iChannelNames 0 AudioStreaming Interface Descriptor: bLength 6 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bSubslotSize 2 bBitResolution 16 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 13 Transfer Type Isochronous Synch Type Synchronous Usage Type Data wMaxPacketSize 0x0060 1x 96 bytes bInterval 1 AudioStreaming Endpoint Descriptor: bLength 8 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x00 bmControls 0x00 bLockDelayUnits 1 Milliseconds wLockDelay 0x0064 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 2 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 32 iInterface 5 AudioStreaming Interface Descriptor: bLength 16 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 6 bmControls 0x05 Active Alternate Setting Control (read-only) Valid Alternate Setting Control (read-only) bFormatType 1 bmFormats 0x00000001 PCM bNrChannels 1 bmChannelConfig 0x00000004 Front Center (FC) iChannelNames 0 AudioStreaming Interface Descriptor: bLength 6 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bSubslotSize 3 bBitResolution 24 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 13 Transfer Type Isochronous Synch Type Synchronous Usage Type Data wMaxPacketSize 0x0090 1x 144 bytes bInterval 1 AudioStreaming Endpoint Descriptor: bLength 8 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x00 bmControls 0x00 bLockDelayUnits 1 Milliseconds wLockDelay 0x0064 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 3 Human Interface Device bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 HID Device Descriptor: bLength 9 bDescriptorType 33 bcdHID 1.11 bCountryCode 0 Not supported bNumDescriptors 1 bDescriptorType 34 Report wDescriptorLength 56 Report Descriptors: ** UNAVAILABLE ** Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 4 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 3 Human Interface Device bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 HID Device Descriptor: bLength 9 bDescriptorType 33 bcdHID 1.11 bCountryCode 0 Not supported bNumDescriptors 1 bDescriptorType 34 Report wDescriptorLength 42 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 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 0x009e bNumInterfaces 5 bConfigurationValue 2 iConfiguration 0 bmAttributes 0xa0 (Bus Powered) Remote Wakeup MaxPower 300mA Interface Association: bLength 8 bDescriptorType 11 bFirstInterface 0 bInterfaceCount 3 bFunctionClass 1 Audio bFunctionSubClass 36 bFunctionProtocol 48 iFunction 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 1 Control Device bInterfaceProtocol 48 iInterface 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 48 iInterface 4 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 48 iInterface 4 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 13 Transfer Type Isochronous Synch Type Synchronous Usage Type Data wMaxPacketSize 0x0120 1x 288 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 2 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 48 iInterface 4 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 13 Transfer Type Isochronous Synch Type Synchronous Usage Type Data wMaxPacketSize 0x00c0 1x 192 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 48 iInterface 5 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 48 iInterface 5 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 13 Transfer Type Isochronous Synch Type Synchronous Usage Type Data wMaxPacketSize 0x0060 1x 96 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 2 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 48 iInterface 5 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 13 Transfer Type Isochronous Synch Type Synchronous Usage Type Data wMaxPacketSize 0x0090 1x 144 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 3 Human Interface Device bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 HID Device Descriptor: bLength 9 bDescriptorType 33 bcdHID 1.11 bCountryCode 0 Not supported bNumDescriptors 1 bDescriptorType 34 Report wDescriptorLength 56 Report Descriptors: ** UNAVAILABLE ** Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 4 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 3 Human Interface Device bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 HID Device Descriptor: bLength 9 bDescriptorType 33 bcdHID 1.11 bCountryCode 0 Not supported bNumDescriptors 1 bDescriptorType 34 Report wDescriptorLength 42 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 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 0x01ed bNumInterfaces 5 bConfigurationValue 3 iConfiguration 0 bmAttributes 0xa0 (Bus Powered) Remote Wakeup MaxPower 300mA Interface Association: bLength 8 bDescriptorType 11 bFirstInterface 0 bInterfaceCount 3 bFunctionClass 1 Audio bFunctionSubClass 1 Control Device bFunctionProtocol 48 iFunction 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 1 Control Device bInterfaceProtocol 48 iInterface 0 AudioControl Interface Descriptor: bLength 10 bDescriptorType 36 bDescriptorSubtype 1 (HEADER) bCategory 4 wTotalLength 0x00cb bmControls 0x00000001 Latency control Control (read-only) AudioControl Interface Descriptor: bLength 20 bDescriptorType 36 bDescriptorSubtype 2 (INPUT_TERMINAL) bTerminalID 1 wTerminalType 0x0101 USB Streaming bAssocTerminal 0 bCSourceID 9 bmControls 0x00000000 wClusterDescrID 0x0020 wExTerminalDescrID 0x0000 wConnectorsDescrID 0x0000 wTerminalDescrStr 0x0000 AudioControl Interface Descriptor: bLength 19 bDescriptorType 36 bDescriptorSubtype 7 (FEATURE_UNIT) bUnitID 2 bSourceID 8 bmaControls(0) 0x00000003 Mute Control (read/write) bmaControls(1) 0x0000000c Volume Control (read/write) bmaControls(2) 0x0000000c Volume Control (read/write) wFeatureDescrStr 0x0000 AudioControl Interface Descriptor: bLength 19 bDescriptorType 36 bDescriptorSubtype 3 (OUTPUT_TERMINAL) bTerminalID 3 wTerminalType 0x0402 Headset bAssocTerminal 4 bSourceID 2 bCSourceID 9 bmControls 0x00000000 wExTerminalDescrID 0x0000 wConnectorsDescrID 0x0000 wTerminalDescrStr 0x0000 AudioControl Interface Descriptor: bLength 20 bDescriptorType 36 bDescriptorSubtype 2 (INPUT_TERMINAL) bTerminalID 4 wTerminalType 0x0402 Headset bAssocTerminal 3 bCSourceID 10 bmControls 0x00000000 wClusterDescrID 0x0010 wExTerminalDescrID 0x0000 wConnectorsDescrID 0x0000 wTerminalDescrStr 0x0000 AudioControl Interface Descriptor: bLength 15 bDescriptorType 36 bDescriptorSubtype 7 (FEATURE_UNIT) bUnitID 5 bSourceID 4 bmaControls(0) 0x00000003 Mute Control (read/write) bmaControls(1) 0x0000000c Volume Control (read/write) wFeatureDescrStr 0x0000 AudioControl Interface Descriptor: bLength 19 bDescriptorType 36 bDescriptorSubtype 3 (OUTPUT_TERMINAL) bTerminalID 6 wTerminalType 0x0101 USB Streaming bAssocTerminal 0 bSourceID 5 bCSourceID 10 bmControls 0x00000000 wExTerminalDescrID 0x0000 wConnectorsDescrID 0x0000 wTerminalDescrStr 0x0000 AudioControl Interface Descriptor: bLength 15 bDescriptorType 36 bDescriptorSubtype 7 (FEATURE_UNIT) bUnitID 7 bSourceID 4 bmaControls(0) 0x00000003 Mute Control (read/write) bmaControls(1) 0x0000000c Volume Control (read/write) wFeatureDescrStr 0x0000 AudioControl Interface Descriptor: bLength 16 bDescriptorType 36 bDescriptorSubtype 5 (MIXER_UNIT) bUnitID 8 bNrInPins 2 baSourceID(0) 1 baSourceID(1) 7 wClusterDescrID 0x0020 bmMixerControls(0) 0x00 bmControls 0x00000000 wMixerDescrStr 0x0000 AudioControl Interface Descriptor: bLength 12 bDescriptorType 36 bDescriptorSubtype 11 (CLOCK_SOURCE) bClockID 9 bmAttributes 3 Internal clock (synchronized to SOF) bmControls 0x00000007 Clock Frequency Control (read/write) Clock Validity Control (read-only) bReferenceTerminal 0 wClockSourceStr 0x0000 AudioControl Interface Descriptor: bLength 12 bDescriptorType 36 bDescriptorSubtype 11 (CLOCK_SOURCE) bClockID 10 bmAttributes 3 Internal clock (synchronized to SOF) bmControls 0x00000007 Clock Frequency Control (read/write) Clock Validity Control (read-only) bReferenceTerminal 0 wClockSourceStr 0x0000 AudioControl Interface Descriptor: bLength 13 bDescriptorType 36 bDescriptorSubtype 16 (POWER_DOMAIN) bPowerDomainID 40 waRecoveryTime(1) 0x0258 waRecoveryTime(2) 0x1770 bNrEntities 2 baEntityID(0) 1 baEntityID(1) 3 wPDomainDescrStr 0x0000 AudioControl Interface Descriptor: bLength 13 bDescriptorType 36 bDescriptorSubtype 16 (POWER_DOMAIN) bPowerDomainID 41 waRecoveryTime(1) 0x0258 waRecoveryTime(2) 0x1770 bNrEntities 2 baEntityID(0) 4 baEntityID(1) 6 wPDomainDescrStr 0x0000 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 48 iInterface 4 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 48 iInterface 4 AudioStreaming Interface Descriptor: bLength 23 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 1 bmControls 0x00000005 Active Alternate Setting Control (read-only) Valid Alternate Setting Control (read-only) wClusterDescrID 0x0020 bmFormats 0x0000000000000001 bSubslotSize 3 bBitResolution 24 bmAuxProtocols 0x0000 bControlSize 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 13 Transfer Type Isochronous Synch Type Synchronous Usage Type Data wMaxPacketSize 0x0120 1x 288 bytes bInterval 1 AudioStreaming Endpoint Descriptor: bLength 10 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmControls 0x00000000 bLockDelayUnits 1 Milliseconds wLockDelay 0x0064 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 2 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 48 iInterface 4 AudioStreaming Interface Descriptor: bLength 23 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 1 bmControls 0x00000005 Active Alternate Setting Control (read-only) Valid Alternate Setting Control (read-only) wClusterDescrID 0x0020 bmFormats 0x0000000000000001 bSubslotSize 2 bBitResolution 16 bmAuxProtocols 0x0000 bControlSize 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 13 Transfer Type Isochronous Synch Type Synchronous Usage Type Data wMaxPacketSize 0x00c0 1x 192 bytes bInterval 1 AudioStreaming Endpoint Descriptor: bLength 10 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmControls 0x00000000 bLockDelayUnits 1 Milliseconds wLockDelay 0x0064 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 48 iInterface 5 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 48 iInterface 5 AudioStreaming Interface Descriptor: bLength 23 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 6 bmControls 0x00000005 Active Alternate Setting Control (read-only) Valid Alternate Setting Control (read-only) wClusterDescrID 0x0010 bmFormats 0x0000000000000001 bSubslotSize 2 bBitResolution 16 bmAuxProtocols 0x0000 bControlSize 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 13 Transfer Type Isochronous Synch Type Synchronous Usage Type Data wMaxPacketSize 0x0060 1x 96 bytes bInterval 1 AudioStreaming Endpoint Descriptor: bLength 10 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmControls 0x00000000 bLockDelayUnits 1 Milliseconds wLockDelay 0x0064 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 2 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 48 iInterface 5 AudioStreaming Interface Descriptor: bLength 23 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 6 bmControls 0x00000005 Active Alternate Setting Control (read-only) Valid Alternate Setting Control (read-only) wClusterDescrID 0x0010 bmFormats 0x0000000000000001 bSubslotSize 3 bBitResolution 24 bmAuxProtocols 0x0000 bControlSize 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 13 Transfer Type Isochronous Synch Type Synchronous Usage Type Data wMaxPacketSize 0x0090 1x 144 bytes bInterval 1 AudioStreaming Endpoint Descriptor: bLength 10 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmControls 0x00000000 bLockDelayUnits 1 Milliseconds wLockDelay 0x0064 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 3 Human Interface Device bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 HID Device Descriptor: bLength 9 bDescriptorType 33 bcdHID 1.11 bCountryCode 0 Not supported bNumDescriptors 1 bDescriptorType 34 Report wDescriptorLength 56 Report Descriptors: ** UNAVAILABLE ** Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 4 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 3 Human Interface Device bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 HID Device Descriptor: bLength 9 bDescriptorType 33 bcdHID 1.11 bCountryCode 0 Not supported bNumDescriptors 1 bDescriptorType 34 Report wDescriptorLength 42 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 1 --endcollapse-- !!USB Stream information !!---------------------- --startcollapse-- Generic USB Audio at usb-3f980000.usb-1.3, full speed : USB Audio Playback: Status: Stop Interface 1 Altset 1 Format: S24_3LE Channels: 2 Endpoint: 0x03 (3 OUT) (SYNC) Rates: 48000 - 48000 (continuous) Bits: 0 Channel map: FL FR Interface 1 Altset 2 Format: S16_LE Channels: 2 Endpoint: 0x03 (3 OUT) (SYNC) Rates: 48000 - 48000 (continuous) Bits: 0 Channel map: FL FR Capture: Status: Stop Interface 2 Altset 1 Format: S16_LE Channels: 1 Endpoint: 0x83 (3 IN) (SYNC) Rates: 48000 - 48000 (continuous) Bits: 0 Channel map: MONO Interface 2 Altset 2 Format: S24_3LE Channels: 1 Endpoint: 0x83 (3 IN) (SYNC) Rates: 48000 - 48000 (continuous) Bits: 0 Channel map: MONO --endcollapse-- !!USB Mixer information !!--------------------- --startcollapse-- USB Mixer: usb_id=0x00200b21, ctrlif=0, ctlerr=0 Card: Generic USB Audio at usb-3f980000.usb-1.3, full speed Unit: 2 Control: name="Headset Playback Volume", index=0 Info: id=2, control=2, cmask=0x3, channels=2, type="S16" Volume: min=-15360, max=0, dBmin=-6000, dBmax=0 Unit: 2 Control: name="Headset Playback Switch", index=0 Info: id=2, control=1, cmask=0x0, channels=1, type="INV_BOOLEAN" Volume: min=0, max=1, dBmin=0, dBmax=0 Unit: 5 Control: name="Headset Capture Volume", index=0 Info: id=5, control=2, cmask=0x1, channels=1, type="S16" Volume: min=-768, max=8192, dBmin=-300, dBmax=3200 Unit: 5 Control: name="Headset 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 Unit: 7 Control: name="Sidetone Mixing Volume", index=0 Info: id=7, control=2, cmask=0x1, channels=1, type="S16" Volume: min=-15872, max=-6144, dBmin=-6200, dBmax=-2400 Unit: 7 Control: name="Sidetone Mixing Switch", index=0 Info: id=7, 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 Jul 21 09:32 /dev/snd/controlC0 crw-rw---- 1 root audio 116, 6 Jul 21 09:32 /dev/snd/controlC1 crw-rw---- 1 root audio 116, 8 Jul 21 09:32 /dev/snd/controlC2 crw-rw---- 1 root audio 116, 2 Jul 21 09:32 /dev/snd/pcmC0D0p crw-rw---- 1 root audio 116, 5 Jul 21 09:32 /dev/snd/pcmC1D0c crw-rw---- 1 root audio 116, 4 Jul 21 09:32 /dev/snd/pcmC1D0p crw-rw---- 1 root audio 116, 7 Jul 21 09:32 /dev/snd/pcmC2D0p crw-rw---- 1 root audio 116, 1 Jul 21 09:32 /dev/snd/seq crw-rw---- 1 root audio 116, 33 Jul 21 09:32 /dev/snd/timer /dev/snd/by-id: total 0 drwxr-xr-x 2 root root 60 Jul 21 09:32 . drwxr-xr-x 4 root root 260 Jul 21 09:32 .. lrwxrwxrwx 1 root root 12 Jul 21 09:32 usb-Generic_USB_Audio_20210726905926-00 -> ../controlC1 /dev/snd/by-path: total 0 drwxr-xr-x 2 root root 100 Jul 21 09:32 . drwxr-xr-x 4 root root 260 Jul 21 09:32 .. lrwxrwxrwx 1 root root 12 Jul 21 09:32 platform-3f00b840.mailbox -> ../controlC0 lrwxrwxrwx 1 root root 12 Jul 21 09:32 platform-3f902000.hdmi -> ../controlC2 lrwxrwxrwx 1 root root 12 Jul 21 09:32 platform-3f980000.usb-usb-0:1.3:2.0 -> ../controlC1 !!ALSA configuration files !!------------------------ !!User specific config file (~/.asoundrc) pcm.!default { type asym playback.pcm { type plug slave.pcm "output" } capture.pcm { type plug slave.pcm "input" } } pcm.output { type hw card 1 } ctl.!default { type hw card 1 } !!Aplay/Arecord output !!-------------------- APLAY **** List of PLAYBACK Hardware Devices **** card 0: Headphones [bcm2835 Headphones], device 0: bcm2835 Headphones [bcm2835 Headphones] Subdevices: 8/8 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 Subdevice #2: subdevice #2 Subdevice #3: subdevice #3 Subdevice #4: subdevice #4 Subdevice #5: subdevice #5 Subdevice #6: subdevice #6 Subdevice #7: subdevice #7 card 1: Audio [USB Audio], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0 card 2: vc4hdmi [vc4-hdmi], device 0: MAI PCM i2s-hifi-0 [MAI PCM i2s-hifi-0] Subdevices: 1/1 Subdevice #0: subdevice #0 ARECORD **** List of CAPTURE Hardware Devices **** card 1: Audio [USB Audio], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0 !!Amixer output !!------------- !!-------Mixer controls for card Headphones Card sysdefault:0 'Headphones'/'bcm2835 Headphones' Mixer name : 'Broadcom Mixer' Components : '' Controls : 2 Simple ctrls : 1 Simple mixer control 'PCM',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback -10239 - 400 Mono: Playback -6284 [37%] [-62.84dB] [on] !!-------Mixer controls for card Audio Card sysdefault:1 'Audio'/'Generic USB Audio at usb-3f980000.usb-1.3, full speed' Mixer name : 'USB Mixer' Components : 'USB0020:0b21' Controls : 8 Simple ctrls : 2 Simple mixer control 'Sidetone Mixing',0 Capabilities: volume volume-joined pswitch pswitch-joined Playback channels: Mono Capture channels: Mono Limits: 0 - 38 Mono: 8 [21%] [-54.00dB] Playback [off] Simple mixer control 'Headset',0 Capabilities: pvolume cvolume cvolume-joined pswitch pswitch-joined cswitch cswitch-joined Playback channels: Front Left - Front Right Capture channels: Mono Limits: Playback 0 - 120 Capture 0 - 70 Mono: Capture 14 [20%] [4.00dB] [on] Front Left: Playback 36 [30%] [-42.00dB] [on] Front Right: Playback 36 [30%] [-42.00dB] [on] !!-------Mixer controls for card vc4hdmi Card sysdefault:2 'vc4hdmi'/'vc4-hdmi' Mixer name : '' Components : '' Controls : 5 Simple ctrls : 0 !!Alsactl output !!-------------- --startcollapse-- state.Headphones { control.1 { iface MIXER name 'PCM Playback Volume' value -6284 comment { access 'read write' type INTEGER count 1 range '-10239 - 400' dbmin -9999999 dbmax 400 dbvalue.0 -6284 } } control.2 { iface MIXER name 'PCM Playback Switch' value true comment { access 'read write' type BOOLEAN count 1 } } } state.Audio { control.1 { iface PCM name 'Playback Channel Map' value.0 0 value.1 0 comment { access 'read volatile' type INTEGER count 2 range '0 - 36' } } control.2 { iface PCM name 'Capture Channel Map' value 0 comment { access 'read volatile' type INTEGER count 1 range '0 - 36' } } control.3 { iface MIXER name 'Headset Playback Switch' value true comment { access 'read write' type BOOLEAN count 1 } } control.4 { iface MIXER name 'Headset Playback Volume' value.0 36 value.1 36 comment { access 'read write' type INTEGER count 2 range '0 - 120' dbmin -6000 dbmax 0 dbvalue.0 -4200 dbvalue.1 -4200 } } control.5 { iface MIXER name 'Headset Capture Switch' value true comment { access 'read write' type BOOLEAN count 1 } } control.6 { iface MIXER name 'Headset Capture Volume' value 14 comment { access 'read write' type INTEGER count 1 range '0 - 70' dbmin -300 dbmax 3200 dbvalue.0 400 } } control.7 { iface MIXER name 'Sidetone Mixing Switch' value false comment { access 'read write' type BOOLEAN count 1 } } control.8 { iface MIXER name 'Sidetone Mixing Volume' value 8 comment { access 'read write' type INTEGER count 1 range '0 - 38' dbmin -6200 dbmax -2400 dbvalue.0 -5400 } } } state.vc4hdmi { control.1 { iface CARD name 'HDMI Jack' value true comment { access read type BOOLEAN count 1 } } control.2 { iface PCM name 'Playback Channel Map' value.0 0 value.1 0 value.2 0 value.3 0 value.4 0 value.5 0 value.6 0 value.7 0 comment { access 'read volatile' type INTEGER count 8 range '0 - 36' } } control.3 { iface PCM name 'IEC958 Playback Mask' value ffffffffffffffffffffffffffffffffffffffffffffffff0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 comment { access read type IEC958 count 1 } } control.4 { iface PCM name 'IEC958 Playback Default' value '0400000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000' comment { access 'read write' type IEC958 count 1 } } control.5 { iface PCM name ELD value '100008006a12000100000000000000000472650041636572205831383348097f070000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000' comment { access 'read volatile' type BYTES count 128 } } } --endcollapse-- !!All Loaded Modules !!------------------ aes_arm aes_arm_bs af_alg algif_hash algif_skcipher backlight bcm2835_codec bcm2835_isp bcm2835_mmal_vchiq bcm2835_v4l2 binfmt_misc bluetooth bnep brcmfmac brcmfmac_wcc brcmutil btbcm cec cfg80211 cmac cryptd crypto_simd dm_mod drm drm_display_helper drm_dma_helper drm_kms_helper drm_panel_orientation_quirks ecc ecdh_generic fixed fuse hci_uart i2c_bcm2835 ip_tables ipv6 mc raspberrypi_gpiomem raspberrypi_hwmon rfkill snd snd_bcm2835 snd_compress snd_hwdep snd_pcm snd_pcm_dmaengine snd_rawmidi snd_seq_device snd_soc_core snd_soc_hdmi_codec snd_timer snd_usb_audio snd_usbmidi_lib uio uio_pdrv_genirq 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] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3 [ 0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_headphones=0 cgroup_disable=memory snd_bcm2835.enable_headphones=1 snd_bcm2835.enable_hdmi=1 snd_bcm2835.enable_hdmi=0 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 console=ttyS0,115200 console=tty1 root=PARTUUID=b0fb4d94-02 rootfstype=ext4 fsck.repair=yes rootwait [ 0.000000] cgroup: Disabling memory control group subsystem -- [ 11.176735] mc: Linux media interface: v0.10 [ 11.196798] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned. [ 11.200128] bcm2835-audio bcm2835-audio: card created with 8 channels [ 11.346951] videodev: Linux video capture interface: v2.00 -- [ 11.956576] Loaded X.509 cert 'wens: 61c038651aabdcf94bd0ac7ff06c7248db18c600' [ 12.058585] usbcore: registered new interface driver snd-usb-audio [ 12.112962] brcmfmac: F1 signature read @0x18000000=0x1541a9a6 -- [ 12.834784] input: vc4-hdmi as /devices/platform/soc/3f902000.hdmi/rc/rc0/input3 [ 12.839221] input: vc4-hdmi HDMI Jack as /devices/platform/soc/3f902000.hdmi/sound/card2/input4 [ 12.853028] vc4-drm soc:gpu: bound 3f902000.hdmi (ops vc4_hdmi_ops [vc4]) !!Packages installed !!-------------------- ii alsa-topology-conf 1.2.5.1-2 all ALSA topology configuration files ii alsa-ucm-conf 1.2.8-1 all ALSA Use Case Manager configuration files ii alsa-utils 1.2.8-1 rpt1 armhf Utilities for configuring and using ALSA