!!################################ !!ALSA Information Script v 0.5.1 !!################################ !!Script ran on: Tue Jul 1 12:12:38 UTC 2025 !!Linux Distribution !!------------------ Debian GNU/Linux 12 \n \l ARCH=arm PRETTY_NAME="Debian GNU/Linux 12 (bookworm)" NAME="Debian GNU/Linux" ID=debian HOME_URL="https://www.debian.org/" SUPPORT_URL="https://www.debian.org/support" BUG_REPORT_URL="https://bugs.debian.org/" !!DMI Information !!--------------- Manufacturer: Product Name: Product Version: Firmware Version: System SKU: Board Vendor: Board Name: !!ACPI Device Status Information !!--------------- !!Kernel Information !!------------------ Kernel release: 4.14.111 Operating System: GNU/Linux Architecture: armv7l Processor: unknown SMP Enabled: Yes !!ALSA Version !!------------ Driver version: k4.14.111 Library version: 1.2.8 Utilities version: 1.2.8 !!Loaded ALSA modules !!------------------- !!Sound Servers on this system !!---------------------------- No sound servers found. !!Soundcards recognised by ALSA !!----------------------------- 0 [Dummy ]: Dummy - Dummy Dummy 1 1 [Loopback ]: Loopback - Loopback Loopback 1 2 [Codec ]: H3_Audio_Codec - H3 Audio Codec H3 Audio Codec 3 [allwinnerhdmi ]: allwinner_hdmi - allwinner,hdmi allwinner,hdmi 4 [Audio ]: USB-Audio - Realtek USB2.0 Audio Google Realtek USB2.0 Audio at usb-1c1d000.usb-1, high speed !!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_soc_core: pmdown_time=3600000 !!Loaded sound module options !!--------------------------- !!Sysfs card info !!--------------- !!Card: /sys/class/sound/card0 Driver: /sys/bus/platform/drivers/snd_dummy Tree: !!Card: /sys/class/sound/card1 Driver: /sys/bus/platform/drivers/snd_aloop Tree: !!Card: /sys/class/sound/card2 Driver: /sys/bus/platform/drivers/sun4i-codec Tree: !!Card: /sys/class/sound/card3 Driver: /sys/bus/platform/drivers/asoc-simple-card Tree: !!Card: /sys/class/sound/card4 Driver: /sys/bus/usb/drivers/snd-usb-audio Tree: !!USB Descriptors !!--------------- --startcollapse-- Bus 005 Device 004: ID 0bda:4ba6 Realtek Semiconductor Corp. Realtek USB2.0 Audio Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 239 Miscellaneous Device bDeviceSubClass 2 bDeviceProtocol 1 Interface Association bMaxPacketSize0 64 idVendor 0x0bda Realtek Semiconductor Corp. idProduct 0x4ba6 bcdDevice 0.06 iManufacturer 3 Google iProduct 1 Realtek USB2.0 Audio iSerial 2 201405280001 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 0x01be bNumInterfaces 4 bConfigurationValue 1 iConfiguration 4 Realtek USB2.0 Audio bmAttributes 0xa0 (Bus Powered) Remote Wakeup MaxPower 100mA Interface Association: bLength 8 bDescriptorType 11 bFirstInterface 0 bInterfaceCount 3 bFunctionClass 1 Audio bFunctionSubClass 0 bFunctionProtocol 32 iFunction 5 Realtek USB2.0 Audio Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 1 Control Device bInterfaceProtocol 32 iInterface 5 Realtek USB2.0 Audio AudioControl Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 1 (HEADER) bcdADC 2.00 bCategory 4 wTotalLength 0x00ba bmControls 0x00 AudioControl Interface Descriptor: bLength 8 bDescriptorType 36 bDescriptorSubtype 10 (CLOCK_SOURCE) bClockID 27 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 30 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 17 bDescriptorType 36 bDescriptorSubtype 2 (INPUT_TERMINAL) bTerminalID 1 wTerminalType 0x0201 Microphone bAssocTerminal 0 bCSourceID 27 bNrChannels 2 bmChannelConfig 0x00000003 Front Left (FL) Front Right (FR) iChannelNames 0 bmControls 0x0004 Connector Control (read-only) iTerminal 0 AudioControl Interface Descriptor: bLength 18 bDescriptorType 36 bDescriptorSubtype 6 (FEATURE_UNIT) bUnitID 3 bSourceID 1 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 2 wTerminalType 0x0101 USB Streaming bAssocTerminal 1 bSourceID 4 bCSourceID 27 bmControls 0x0000 iTerminal 0 AudioControl Interface Descriptor: bLength 17 bDescriptorType 36 bDescriptorSubtype 2 (INPUT_TERMINAL) bTerminalID 34 wTerminalType 0x0201 Microphone bAssocTerminal 0 bCSourceID 27 bNrChannels 2 bmChannelConfig 0x00000003 Front Left (FL) Front Right (FR) iChannelNames 0 bmControls 0x0000 iTerminal 24 Sidetone AudioControl Interface Descriptor: bLength 18 bDescriptorType 36 bDescriptorSubtype 6 (FEATURE_UNIT) bUnitID 35 bSourceID 34 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 16 bDescriptorType 36 bDescriptorSubtype 4 (MIXER_UNIT) bUnitID 36 bNrInPins 2 baSourceID(0) 16 baSourceID(1) 35 bNrChannels 2 bmChannelConfig 0x00000003 Front Left (FL) Front Right (FR) iChannelNames 0 bmMixerControls(0) 0x00 bmControls 0x00 iMixer 0 AudioControl Interface Descriptor: bLength 16 bDescriptorType 36 bDescriptorSubtype 9 (EXTENSION_UNIT) bUnitID 4 wExtensionCode 0x0bda bNrInPins 1 baSourceID(0) 3 bNrChannels 2 bmChannelConfig 0x00000003 Front Left (FL) Front Right (FR) iChannelNames 0 bmControls 0x01 Enable Control (read-only) iExtension 0 AudioControl Interface Descriptor: bLength 17 bDescriptorType 36 bDescriptorSubtype 2 (INPUT_TERMINAL) bTerminalID 14 wTerminalType 0x0101 USB Streaming bAssocTerminal 0 bCSourceID 30 bNrChannels 2 bmChannelConfig 0x00000003 Front Left (FL) Front Right (FR) iChannelNames 0 bmControls 0x0000 iTerminal 21 Headphone AudioControl Interface Descriptor: bLength 18 bDescriptorType 36 bDescriptorSubtype 6 (FEATURE_UNIT) bUnitID 16 bSourceID 14 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 15 wTerminalType 0x0302 Headphones bAssocTerminal 14 bSourceID 36 bCSourceID 30 bmControls 0x0004 Connector Control (read-only) iTerminal 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x85 EP 5 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 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 32 iInterface 18 Microphone Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 32 iInterface 0 AudioStreaming Interface Descriptor: bLength 16 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 2 bmControls 0x00 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 0x81 EP 1 IN bmAttributes 5 Transfer Type Isochronous Synch Type Asynchronous Usage Type Data wMaxPacketSize 0x001c 1x 28 bytes bInterval 1 AudioStreaming Endpoint Descriptor: bLength 8 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x00 bmControls 0x00 bLockDelayUnits 0 Undefined wLockDelay 0x0000 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 32 iInterface 21 Headphone Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 32 iInterface 0 AudioStreaming Interface Descriptor: bLength 16 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 14 bmControls 0x00 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 0x07 EP 7 OUT bmAttributes 9 Transfer Type Isochronous Synch Type Adaptive Usage Type Data wMaxPacketSize 0x00f8 1x 248 bytes bInterval 1 AudioStreaming Endpoint Descriptor: bLength 8 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x00 bmControls 0x00 bLockDelayUnits 0 Undefined wLockDelay 0x0000 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 2 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 32 iInterface 0 AudioStreaming Interface Descriptor: bLength 16 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 14 bmControls 0x00 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 0x07 EP 7 OUT bmAttributes 9 Transfer Type Isochronous Synch Type Adaptive Usage Type Data wMaxPacketSize 0x0174 1x 372 bytes bInterval 1 AudioStreaming Endpoint Descriptor: bLength 8 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x00 bmControls 0x00 bLockDelayUnits 0 Undefined wLockDelay 0x0000 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 3 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 32 iInterface 0 AudioStreaming Interface Descriptor: bLength 16 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 14 bmControls 0x00 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 4 bBitResolution 32 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x07 EP 7 OUT bmAttributes 9 Transfer Type Isochronous Synch Type Adaptive Usage Type Data wMaxPacketSize 0x01f0 1x 496 bytes bInterval 1 AudioStreaming Endpoint Descriptor: bLength 8 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x00 bmControls 0x00 bLockDelayUnits 0 Undefined wLockDelay 0x0000 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 35 Report Descriptors: ** UNAVAILABLE ** Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x86 EP 6 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0010 1x 16 bytes bInterval 8 Device Qualifier (for other device speed): bLength 10 bDescriptorType 6 bcdUSB 2.01 bDeviceClass 239 Miscellaneous Device bDeviceSubClass 2 bDeviceProtocol 1 Interface Association bMaxPacketSize0 64 bNumConfigurations 1 Device Status: 0x0002 (Bus Powered) Remote Wakeup Enabled --endcollapse-- !!USB Stream information !!---------------------- --startcollapse-- Google Realtek USB2.0 Audio at usb-1c1d000.usb-1, high speed : USB Audio Playback: Status: Stop Interface 2 Altset 1 Format: S16_LE Channels: 2 Endpoint: 7 OUT (ADAPTIVE) Rates: 44100, 48000, 96000, 192000, 384000 Data packet interval: 125 us Interface 2 Altset 2 Format: S24_3LE Channels: 2 Endpoint: 7 OUT (ADAPTIVE) Rates: 44100, 48000, 96000, 192000, 384000 Data packet interval: 125 us Interface 2 Altset 3 Format: S32_LE Channels: 2 Endpoint: 7 OUT (ADAPTIVE) Rates: 44100, 48000, 96000, 192000, 384000 Data packet interval: 125 us Capture: Status: Stop Interface 1 Altset 1 Format: S16_LE Channels: 2 Endpoint: 1 IN (ASYNC) Rates: 48000 Data packet interval: 125 us --endcollapse-- !!USB Mixer information !!--------------------- --startcollapse-- USB Mixer: usb_id=0x0bda4ba6, ctrlif=0, ctlerr=0 Card: Google Realtek USB2.0 Audio at usb-1c1d000.usb-1, high speed Unit: 3 Control: name="Mic Capture Volume", index=0 Info: id=3, control=2, cmask=0x3, channels=2, type="S16" Volume: min=-4512, max=3552, dBmin=-1762, dBmax=1387 Unit: 3 Control: name="Mic Capture Switch", index=0 Info: id=3, control=1, cmask=0x0, channels=1, type="INV_BOOLEAN" Volume: min=0, max=1, dBmin=0, dBmax=0 Unit: 4 Control: name="Extension Unit Switch", index=0 Info: id=4, control=1, cmask=0x0, channels=1, type="BOOLEAN" Volume: min=0, max=1, dBmin=0, dBmax=0 Unit: 16 Control: name="Headphone Playback Volume", index=0 Info: id=16, control=2, cmask=0x3, channels=2, type="S16" Volume: min=-16704, max=0, dBmin=-6525, dBmax=0 Unit: 16 Control: name="Headphone Playback Switch", index=0 Info: id=16, control=1, cmask=0x0, channels=1, type="INV_BOOLEAN" Volume: min=0, max=1, dBmin=0, dBmax=0 Unit: 27 Control: name="Clock Source 27 Validity", index=0 Info: id=27, control=2, cmask=0x0, channels=1, type="BOOLEAN" Volume: min=0, max=1, dBmin=0, dBmax=0 Unit: 30 Control: name="Clock Source 30 Validity", index=0 Info: id=30, control=2, cmask=0x0, channels=1, type="BOOLEAN" Volume: min=0, max=1, dBmin=0, dBmax=0 Unit: 35 Control: name="Sidetone Playback Volume", index=0 Info: id=35, control=2, cmask=0x3, channels=2, type="S16" Volume: min=-11904, max=0, dBmin=-4650, dBmax=0 Unit: 35 Control: name="Sidetone Playback Switch", index=0 Info: id=35, 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, 0 Jul 1 13:16 /dev/snd/controlC0 crw-rw---- 1 root audio 116, 32 Jul 1 13:16 /dev/snd/controlC1 crw-rw---- 1 root audio 116, 64 Jul 1 13:16 /dev/snd/controlC2 crw-rw---- 1 root audio 116, 96 Jul 1 13:16 /dev/snd/controlC3 crw-rw---- 1 root audio 116, 128 Jul 1 15:29 /dev/snd/controlC4 crw-rw---- 1 root audio 116, 24 Jul 1 13:16 /dev/snd/pcmC0D0c crw-rw---- 1 root audio 116, 16 Jul 1 13:16 /dev/snd/pcmC0D0p crw-rw---- 1 root audio 116, 56 Jul 1 13:16 /dev/snd/pcmC1D0c crw-rw---- 1 root audio 116, 48 Jul 1 13:16 /dev/snd/pcmC1D0p crw-rw---- 1 root audio 116, 57 Jul 1 13:16 /dev/snd/pcmC1D1c crw-rw---- 1 root audio 116, 49 Jul 1 13:16 /dev/snd/pcmC1D1p crw-rw---- 1 root audio 116, 88 Jul 1 13:16 /dev/snd/pcmC2D0c crw-rw---- 1 root audio 116, 80 Jul 1 13:16 /dev/snd/pcmC2D0p crw-rw---- 1 root audio 116, 112 Jul 1 13:16 /dev/snd/pcmC3D0p crw-rw---- 1 root audio 116, 152 Jul 1 15:29 /dev/snd/pcmC4D0c crw-rw---- 1 root audio 116, 144 Jul 1 15:41 /dev/snd/pcmC4D0p crw-rw---- 1 root audio 116, 1 Jul 1 13:16 /dev/snd/seq crw-rw---- 1 root audio 116, 33 Jul 1 13:16 /dev/snd/timer /dev/snd/by-id: total 0 drwxr-xr-x 2 root root 60 Jul 1 15:29 . drwxr-xr-x 4 root root 440 Jul 1 15:29 .. lrwxrwxrwx 1 root root 12 Jul 1 15:29 usb-Google_Realtek_USB2.0_Audio_201405280001-00 -> ../controlC4 /dev/snd/by-path: total 0 drwxr-xr-x 2 root root 140 Jul 1 15:29 . drwxr-xr-x 4 root root 440 Jul 1 15:29 .. lrwxrwxrwx 1 root root 12 Jul 1 15:29 platform-1c1d000.usb-usb-0:1:1.0 -> ../controlC4 lrwxrwxrwx 1 root root 12 Jul 1 13:16 platform-1c22c00.codec -> ../controlC2 lrwxrwxrwx 1 root root 12 Jul 1 13:16 platform-snd_aloop.0 -> ../controlC1 lrwxrwxrwx 1 root root 12 Jul 1 13:16 platform-snd_dummy.0 -> ../controlC0 lrwxrwxrwx 1 root root 12 Jul 1 13:16 platform-soc:sound -> ../controlC3 !!Aplay/Arecord output !!-------------------- APLAY **** List of PLAYBACK Hardware Devices **** card 0: Dummy [Dummy], device 0: Dummy PCM [Dummy PCM] 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: Loopback [Loopback], device 0: Loopback PCM [Loopback PCM] 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: Loopback [Loopback], device 1: Loopback PCM [Loopback PCM] 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 2: Codec [H3 Audio Codec], device 0: CDC PCM Codec-0 [] Subdevices: 1/1 Subdevice #0: subdevice #0 card 3: allwinnerhdmi [allwinner,hdmi], device 0: 1c22800.i2s-i2s-hifi i2s-hifi-0 [] Subdevices: 1/1 Subdevice #0: subdevice #0 card 4: Audio [Realtek USB2.0 Audio], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0 ARECORD **** List of CAPTURE Hardware Devices **** card 0: Dummy [Dummy], device 0: Dummy PCM [Dummy PCM] 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: Loopback [Loopback], device 0: Loopback PCM [Loopback PCM] 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: Loopback [Loopback], device 1: Loopback PCM [Loopback PCM] 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 2: Codec [H3 Audio Codec], device 0: CDC PCM Codec-0 [] Subdevices: 1/1 Subdevice #0: subdevice #0 card 4: Audio [Realtek USB2.0 Audio], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0 !!Amixer output !!------------- !!-------Mixer controls for card Dummy Card sysdefault:0 'Dummy'/'Dummy 1' Mixer name : 'Dummy Mixer' Components : '' Controls : 11 Simple ctrls : 6 Simple mixer control 'Master',0 Capabilities: volume cswitch Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: -50 - 100 Front Left: 0 [33%] [-30.00dB] Capture [off] Front Right: 0 [33%] [-30.00dB] Capture [off] Simple mixer control 'Synth',0 Capabilities: volume cswitch Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: -50 - 100 Front Left: 0 [33%] [-30.00dB] Capture [off] Front Right: 0 [33%] [-30.00dB] Capture [off] Simple mixer control 'Line',0 Capabilities: volume cswitch Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: -50 - 100 Front Left: 0 [33%] [-30.00dB] Capture [off] Front Right: 0 [33%] [-30.00dB] Capture [off] Simple mixer control 'CD',0 Capabilities: volume cswitch Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: -50 - 100 Front Left: 0 [33%] [-30.00dB] Capture [off] Front Right: 0 [33%] [-30.00dB] Capture [off] Simple mixer control 'Mic',0 Capabilities: volume cswitch Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: -50 - 100 Front Left: 0 [33%] [-30.00dB] Capture [off] Front Right: 0 [33%] [-30.00dB] Capture [off] Simple mixer control 'External I/O Box',0 Capabilities: enum Items: 'None' 'CD Player' Item0: 'CD Player' !!-------Mixer controls for card Loopback Card sysdefault:1 'Loopback'/'Loopback 1' Mixer name : 'Loopback Mixer' Components : '' Controls : 96 Simple ctrls : 0 !!-------Mixer controls for card Codec Card sysdefault:2 'Codec'/'H3 Audio Codec' Mixer name : '' Components : '' Controls : 20 Simple ctrls : 12 Simple mixer control 'Line In',0 Capabilities: pvolume pvolume-joined pswitch cswitch Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: Playback 0 - 7 Front Left: Playback 3 [43%] [0.00dB] [off] Capture [off] Front Right: Playback 3 [43%] [0.00dB] [off] Capture [off] Simple mixer control 'Line Out',0 Capabilities: pvolume pvolume-joined pswitch Playback channels: Front Left - Front Right Limits: Playback 0 - 31 Mono: Front Left: Playback 17 [55%] [-21.00dB] [on] Front Right: Playback 17 [55%] [-21.00dB] [on] Simple mixer control 'Line Out Source',0 Capabilities: penum Items: 'Stereo' 'Mono Differential' Item0: 'Stereo' Item1: 'Stereo' Simple mixer control 'Mic1',0 Capabilities: pvolume pvolume-joined pswitch cswitch Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: Playback 0 - 7 Front Left: Playback 3 [43%] [0.00dB] [off] Capture [off] Front Right: Playback 3 [43%] [0.00dB] [off] Capture [off] Simple mixer control 'Mic1 Boost',0 Capabilities: volume volume-joined Playback channels: Mono Capture channels: Mono Limits: 0 - 7 Mono: 4 [57%] [33.00dB] Simple mixer control 'Mic2',0 Capabilities: pvolume pvolume-joined pswitch cswitch Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: Playback 0 - 7 Front Left: Playback 3 [43%] [0.00dB] [off] Capture [off] Front Right: Playback 3 [43%] [0.00dB] [off] Capture [off] Simple mixer control 'Mic2 Boost',0 Capabilities: volume volume-joined Playback channels: Mono Capture channels: Mono Limits: 0 - 7 Mono: 4 [57%] [33.00dB] Simple mixer control 'Mixer',0 Capabilities: cswitch Capture channels: Front Left - Front Right Front Left: Capture [off] Front Right: Capture [off] Simple mixer control 'Mixer Reversed',0 Capabilities: cswitch Capture channels: Front Left - Front Right Front Left: Capture [off] Front Right: Capture [off] Simple mixer control 'ADC Gain',0 Capabilities: cvolume cvolume-joined Capture channels: Mono Limits: Capture 0 - 7 Mono: Capture 3 [43%] [0.00dB] Simple mixer control 'DAC',0 Capabilities: pvolume pvolume-joined pswitch Playback channels: Front Left - Front Right Limits: Playback 0 - 63 Mono: Front Left: Playback 45 [71%] [-20.88dB] [on] Front Right: Playback 45 [71%] [-20.88dB] [on] Simple mixer control 'DAC Reversed',0 Capabilities: pswitch Playback channels: Front Left - Front Right Mono: Front Left: Playback [off] Front Right: Playback [off] !!-------Mixer controls for card allwinnerhdmi Card sysdefault:3 'allwinnerhdmi'/'allwinner,hdmi' Mixer name : '' Components : '' Controls : 2 Simple ctrls : 0 !!-------Mixer controls for card Audio amixer: Mixer load sysdefault:4 error: Broken pipe Card sysdefault:4 'Audio'/'Google Realtek USB2.0 Audio at usb-1c1d000.usb-1, high speed' Mixer name : 'USB Mixer' Components : 'USB0bda:4ba6' Controls : 11 amixer: Mixer sysdefault:4 load error: Broken pipe !!Alsactl output !!-------------- --startcollapse-- --endcollapse-- !!All Loaded Modules !!------------------ ip_tables rtc_ds1307 snd_hwdep snd_usb_audio snd_usbmidi_lib x_tables !!ALSA/HDA dmesg !!-------------- [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 129920 [ 0.000000] Kernel command line: console=ttyS0,115200 earlyprintk root=/dev/mmcblk0p2 rootfstype=ext4 rw rootwait fsck.repair=yes panic=10 fbcon=map:0 data=/dev/mmcblk0p3 snd-soc-core.pmdown_time=3600000 [ 0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes) -- [ 1.615214] sun4i-drm display-engine: bound 1c0c000.lcd-controller (ops 0xc0c5086c) [ 1.746417] sun8i-dw-hdmi 1ee0000.hdmi: Detected HDMI TX controller v1.32a with HDCP (sun8i_dw_hdmi_phy) [ 1.756306] sun8i-dw-hdmi 1ee0000.hdmi: registered DesignWare HDMI I2C bus driver [ 1.764048] sun4i-drm display-engine: bound 1ee0000.hdmi (ops 0xc0c51ee8) -- [ 3.327973] hub 9-0:1.0: 1 port detected [ 3.335052] asoc-simple-card soc:sound: i2s-hifi <-> 1c22800.i2s mapping ok [ 3.344427] input: r_gpio_keys as /devices/platform/r_gpio_keys/input/input0 -- [ 3.366881] usb0-vbus: disabling [ 3.370108] ALSA device list: [ 3.373081] #0: Dummy 1 -- [ 2944.977655] hid-generic 0003:0BDA:4BA6.0001: input,hidraw0: USB HID v1.11 Device [Google Realtek USB2.0 Audio] on usb-1c1d000.usb-1/input2 [ 2945.353739] usbcore: registered new interface driver snd-usb-audio [ 7740.598101] usb 5-1: USB disconnect, device number 2 !!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 armhf Utilities for configuring and using ALSA