My Digirig Lite doesn’t appear on my Raspberry Pi 2 W running Bullseye. I’ve tried the CM108 command as well as aplay. Nothing appears. Am I missing something like a driver?
The sound card is a standard USB device and doesn’t require a specific driver.
Does your Digirig receive power (green LED)?
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Yes, the green/power LED is on. Here’s the output from the cm108 command, if that helps.
SUBSYSTEM!=“sound”, GOTO=“my_usb_audio_end”
ACTION!=“add”, GOTO=“my_usb_audio_end”
LABEL=“my_usb_audio_end”
And here’s the output of “ls usb --verbose”:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Couldn’t open device, some information will be missing
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0
bDeviceProtocol 1 Single TT
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0002 2.0 root hub
bcdDevice 6.01
iManufacturer 3 Linux 6.1.21-v8+ dwc_otg_hcd
iProduct 2 DWC OTG Controller
iSerial 1 3f980000.usb
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x0019
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0004 1x 4 bytes
bInterval 12
Let’s try it with a PC for a sanity check. Is it getting detected correctly there?
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Yes, it shows up as a new USB device when I connect it to a PC.
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Good, so we know it’s on the RPI side.
Anything else detected on that USB port? Preferably another sound device, but try anything if you don’t have any USB soundcards. Good 5V power on it?
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Tried a different USB sound card and it worked. So then I tried the Digirig again and…it worked, too! I swear I changed nothing! 
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