I am trying to use an Audioquest Dragonfly Red DAC on DietPi v.157. Audio output is static noise on both an Asus tinkerboard, and an Allo Sparky with USB Bridge.
The dragonfly works fine on an iMac and on Ubuntu 16.04 LTS. Roon is used for music playback. I’ve also connected my SMSL DAC to the same tinkerboard and allo usbbridge, and that is working fine.
I’ve included a sample of the noise recorded from the Dragonfly’s output: noise.wav.zip (1.5 MB)
Any suggestions on how to resolve this issue would be appreciated. Here are some diagnostic output:
dmesg |grep -i usb
[ 19.303461] usbcore: registered new interface driver snd-usb-audio
[ 594.001812] usb 4-1.1: USB disconnect, device number 3
[ 728.895415] usb 4-1.1: new full-speed USB device number 4 using aotg_hcd
[ 728.996710] usb 4-1.1: New USB device found, idVendor=21b4, idProduct=0082
[ 728.996722] usb 4-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 728.996730] usb 4-1.1: Product: AudioQuest DragonFly Red v1.0
[ 728.996737] usb 4-1.1: Manufacturer: AudioQuest
[ 728.996743] usb 4-1.1: SerialNumber: AQDFRD0100116393
[ 733.996562] hid-generic 0003:21B4:0082.0002: hiddev0,hidraw0: USB HID v1.11 Device [AudioQuest AudioQuest DragonFly Red v1.0] on usb-aotg_hcd.1-1.1/input2
[ 3202.386179] usb 4-1.1: USB disconnect, device number 4
[ 3228.475428] usb 4-1.1: new high-speed USB device number 5 using aotg_hcd
[ 3228.575612] usb 4-1.1: New USB device found, idVendor=0424, idProduct=2412
[ 3228.575623] usb 4-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 3228.576228] hub 4-1.1:1.0: USB hub found
[ 3233.515387] usb 4-1.1.1: new high-speed USB device number 6 using aotg_hcd
[ 3233.616073] usb 4-1.1.1: New USB device found, idVendor=20b1, idProduct=3066
[ 3233.616085] usb 4-1.1.1: New USB device strings: Mfr=1, Product=3, SerialNumber=0
[ 3233.616092] usb 4-1.1.1: Product: SMSL USB Audio
[ 3233.616099] usb 4-1.1.1: Manufacturer: SMSL
cat /etc/asound.conf
pcm.!default {
type hw
card 1
device 0
}
ctl.!default {
type hw
card 1
}
I must admit I was hoping this wasn’t the issue, as I know it would take a while to fix as dietpi is on 3.10 kernel atm.
I did ensure the Audioquest Dragonfly is on 1.06, and I did try shairport-sync and even playing a WAV file with aplay, but unfortunately the result is the same.
For completeness it is worth mentioning that I also tried various power combinations for the USBBridge+Sparky board to ensure I don’t have a power problem, and settled on powering the sparky and usbbridge separately(With J28 open), 2A into the usb on the sparky, and 3A to DC barrel jack on the USBBridge.
Just a further note, I am having the same issue with the dragonfly red on an Asus Tinkerboard with dietpi running kernel: Linux tinkerboard 4.4.71+ #1 SMP
I upgraded the Asus tinkerboard, and the Allo usbridge to v.158.
The tinkerboard with the Dragonfly Red still has a lot of noise, but you can actually make out some music now…it is still unusable, but at least it is an improvement.
On the Allo Usbridge, things are worse…even though it sees the Dragonfly(aplay -l), roon can no longer play anything through it(it just jumps to the next song). When I rescan for devices via Roon, the usbridge starts spinning its wheels and locks up, and never completes the scan. Even when issuing a reboot command as root, it does not reboot and needs a power cycle.
Hi,
I need some help.
I am trying to resurrect my Allo SparkySBC with USBridge (NOT the Signature), using DietPi and a Dragonfly USB DAC.
I am getting the same ‘noise’ that cychie (previous post, with noise.zip) was getting, before Allo support helped him fix it.
I hear this even when attempting… ‘speaker-test -t pink’ or ‘speaker-test 1.2.3’.
