Hi,
I have the exact problem with my Conbee II.
It also works on my raspi and on my Windows 10 computer
tower-diagnostics-20190715-1705.zi
I get this message:
Jul 15 19:03:55 Tower kernel: usb usb3-port9: attempt power cycle
Jul 15 19:03:55 Tower kernel: usb 3-9: new full-speed USB device number 50 using xhci_hcd
Jul 15 19:04:04 Tower kernel: usb 3-9: unable to read config index 0 descriptor/all
Jul 15 19:04:04 Tower kernel: usb 3-9: can't read configurations, error -110
Jul 15 19:04:05 Tower kernel: usb 3-9: new full-speed USB device number 51 using xhci_hcd
in the log for a couple a minutes then it stops, se my syslog here: tower-syslog-20190715-1709.zip
I made a topic on this last week but didnt get any answers.