I have the latest RopieeeXL installed on a RPi4 connected to my Topping D70 with a Supra USB lead. After a few seconds of play the message ‘Roon lost control…’ appears, initially I thought it was related to using the Pi’s USB 3 port so moved it a USB 2 but that didn’t help.
In a moment of desperation I decided to use a small 2 port passive USB hub and it worked, no disconnects, stable at DSD256.
Any suggestions as to why the passive hub works and a direct connect doesn’t?
What other USB cable are you using? Try that direct between the two devices.
Hi Henry, I’m using a Supra 0.75m USB lead and was directly connected that to the DAC, this resulted in the ‘lost control’ messages.
So have you tried a different cable?
Hi Henry, now that’s odd, plugged in a perfectly ‘normal’ USB cable and it works fine, no ‘Lost Control’ errors, no more…
[ 586.188104] usb 1-1.2: USB disconnect, device number 6
[ 590.592689] usb 1-1.2: new high-speed USB device number 7 using xhci_hcd
[ 590.723448] usb 1-1.2: New USB device found, idVendor=152a, idProduct=8750, bcdDevice= 1.04
[ 590.723490] usb 1-1.2: New USB device strings: Mfr=1, Product=3, SerialNumber=0
[ 590.723521] usb 1-1.2: Product: D70
[ 590.723545] usb 1-1.2: Manufacturer: Topping
[ 590.762104] usb 1-1.2: 1:3 : unsupported format bits 0x100000000
…messages. No need to use a simple passive hub. What’s going on with the Supra USB cable?
Thank you for forcing me to check the cable 
Damian
No problem. Your issue isn’t as uncommon as you might think.
Yet another boutique just-for-audiophiles failure. Digital superstition.
My thoughts too Bill, I’ve always doubted digital cables, it was an experiment hence a cheap…ish, short length, what could go wrong with two plugs, 4 little wires with 2 carrying data?
Time to stick with a standard Belkin me thinks!