title: ASUS N751JK, bluetooth doesn't work, ubuntu 17.10
body: <p>Can't make my bluetooth work on Ubuntu.<br>
  <a href="https://i.stack.imgur.com/d8sGx.png" rel="nofollow noreferrer">The toggle is active.But it means nothing. Since system is not reacting on it</a></p>
  
  <p><code>rfkill list</code> output is normal: </p>
  
  <pre><code>0: phy0: Wireless LAN
      Soft blocked: no
      Hard blocked: no
  1: hci0: Bluetooth
      Soft blocked: no
      Hard blocked: no
  </code></pre>
  
  <p><code>hciconfig -a</code> gives the following info</p>
  
  <pre><code>hci0:    Type: Primary  Bus: USB
      BD Address: 9C:D2:1E:0D:2F:B2  ACL MTU: 1021:4  SCO MTU: 128:2
      DOWN 
      RX bytes:1160 acl:0 sco:0 events:62 errors:0
      TX bytes:742 acl:0 sco:0 commands:62 errors:0
      Features: 0xff 0xff 0x8f 0xfe 0xdb 0xff 0x5b 0x87
      Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 
      Link policy: RSWITCH HOLD SNIFF PARK 
      Link mode: SLAVE ACCEPT 
  </code></pre>
  
  <p>Typping of <code>sudo hciconfig hci0 up</code> results in:</p>
  
  <pre><code>Can't init device hci0: Invalid request code (56)
  </code></pre>
  
  <p>The output of <code>hcitool dev</code> command is empty:</p>
  
  <pre><code>Devices:
  </code></pre>
  
  <p>This is <code>hcitool scan</code> output  </p>
  
  <pre><code>Device is not available: No such device
  </code></pre>
  
  <p>I seached for similar problems, checked their solutions if it works in my case, but failed - nothing has helped me. So I've decided to ask it here  </p>
  
  <p>There may be another usefull information which is not given here for now. But I don't know yet what should be provided in order to make the problem be solved easier.</p>