Oliver Neukum writes:
force. So something's changed, but looking at the messages it's totally unclear where. I _think_ it might be plasmashell trying to use the device as that was the latest update, but it could be anywhere else.
Did you do a kernel update?
I've updated to kernel 4.16.6, removed the blacklisting and the issue is still present. I can't seem to figure out what is actually using the driver, but I can't remove the module unless I unplug the SDR as it's claimed to be in use. I have not yet tested if it would work outside KDE.