RTL-SDR stopped working. in SDR - Software Defined Radio Posted July 30, 2015 · Edited July 30, 2015 by TN.Frank Thanks for the info guys. I'll give all of it a try and see if I can get it working. Edit for addtional info. The "sudo rmmod dvb_usb_rtl28xxu" worked to get it up and running. Guess I just need to blacklist it by by creating "rtlsdr.conf" in "/etc/modprobe.d" and putting "blacklist dvb_usb_rtl28xxu" in it. Thanks again guys.