I am not sure if this would be helpful, but I am sure this is relevant to the issue reported here. I also experience this issue after the upgrade from eudev-1.9 to eudev-3.0 which source I took from ...
Trying to open a PyVISA connection to pyvisa-py to a USB device. Sometimes it works and other times it fails. The USB device is connected to the MacBook Pro through a USB Hub, if that matters. I ...
If the USB file transfer gets stuck at 99% or any other percentage number while copying or moving the files to an external USB storage device, the solutions provided in this article will help you.