First, type in a terminal uhd_usrp_probe, suggesting USB wrong, you do not have permission.
Solution:
Input:
sudo uhd_usrp_probe
Second, find the device, the address is empty error appears in GNU Radio:
Error reason: the USB port to be opened in case of sudo, so grc have to open the job in the root case.
The solution: first enter the root re-opened under grc
If an error into the root: "Authentication failed"
Then to re-enter the password to change it to:
