title: Bluetooth usb device not detected on raspberry pi
body: <p>I recently bought a Radius Network Beacon Developer Kit, and I installed the pibeacon image provided by the radius network on to Rapberry Pi Model B. i am using USB powered beacon provided by the Radius Network. Bluez (5.31) is already pre-installed in the Raspbian os image.
  When I do a <strong>lsusb</strong> I get the output as:<br>
  <em>Bus 001 Device 002: ID 0424:9512 Standard Microsystems Corp.</em><br>
  <em>Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub</em><br>
  <em>Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp.</em><br>
  <em>Bus 001 Device 007: ID 0bda:8176 Realtek Semiconductor Corp. RTL8188CUS 802.11n WLAN Adapter</em><br>
  <em>Bus 001 Device 006: ID 2458:0001</em>  </p>
  
  <p>When I try the commands <strong>hcitool dev</strong>:<br>
  <em>Devices:</em><br>
  When I try the command <strong>hcitool lesscan</strong>:<br>
  <em>Device is not available: No such device<br>
  <strong>hciconfig</strong> also gives a blank output</em><br>
  But when I try <strong>hcitool lesscan --duplicates</strong> I get the following output:
  <em>[1]+ 6044</em>    </p>
  
  <p>The command <strong>beacon scan</strong> and <strong>beacon stop</strong> returns<br>
  <em>Send failed: File descriptor in bad state.</em><br>
  And<br>
  <em>Invalid device : Network is down</em>    </p>
  
  <p>I even tried turning on the hci0 , but nothing seems to be working. Please help.  </p>