title: Change Tx Bluetooth Linux No Effect
body: <p>I would like to change the signal strength of my bluetooth device using linux command line (ubuntu 14.04).</p>
  
  <p>I have found that I need to use the command</p>
  
  <pre><code>sudo hciconfig hci0 inqtpl
  </code></pre>
  
  <p>to change the signal strength but it's not working</p>
  
  <hr>
  
  <pre><code>sudo hciconfig hci0 inqtpl
  </code></pre>
  
  <p>gives me</p>
  
  <p><a href="https://i.stack.imgur.com/6HYX0.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/6HYX0.png" alt="enter image description here"></a></p>
  
  <hr>
  
  <p>and with hcidump</p>
  
  <p><a href="https://i.stack.imgur.com/4b9eT.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/4b9eT.png" alt="enter image description here"></a></p>
  
  <hr>
  
  <pre><code>sudo hciconfig hci0 inqtpl 2
  </code></pre>
  
  <p>gives me</p>
  
  <p><a href="https://i.stack.imgur.com/LPOyV.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/LPOyV.png" alt="enter image description here"></a></p>
  
  <hr>
  
  <p>Using the command again</p>
  
  <pre><code>sudo hciconfig hci0 inqtpl
  </code></pre>
  
  <p>Gives me exactly the same thing than the first time. Nothing changed. </p>
  
  <hr>
  
  <p>The command</p>
  
  <pre><code>sudo bccmd psget 0x0017
  </code></pre>
  
  <p>gives me</p>
  
  <pre><code>Unsupported manufacturer
  </code></pre>
  
  <hr>
  
  <p>Thank you for your help buddies</p>