title: unable to debug android/chrome remotely from ubuntu/linux
body: <p>I'm an android newbie. I've got a an android with chrome v30 installed. I enabled USB debugging on it. On my ubuntu linux I've installed ADB extension for chrome v27. I plug usb cable, so the connection is established automatically (ubuntu recognizes android as "camera"). On my laptop chrome I've got an android icon (ADB icon), I turn it on (start ADB). Then a number "1" shows up in a rectangle - yes, a device has been recognized (hurray!). But I'm unable to debug my mobile gmail. Either there is something wrong or I don't know how to access ADB. I've got following sections in the <code>View inspection targets</code>:</p>
  
  <ul>
  <li>Pages - these are just my laptop tabs</li>
  <li>Extensions - chrome laptop extensions, such as JSONView</li>
  <li>shared workers - empty</li>
  <li>other - with one element: chrome-devtools://devtools/devtools.html?dockSide=bottom&amp;toolbarColor=rgba(223,223,223,1)&amp;textColor=…</li>
  </ul>
  
  <p>Does anyone know what did I do wrong? The chrome version on mobile is ok (should be 24+, it's 30), the USB debug permission is set to true, USB cable is plugged both ways, ADB icon shows <code>1</code>.</p>
  
  <p>Besides, the official chrome ADB page says that I should run command <code>adb devices</code>, but I don't know where to execute it. I didn't install android SDK, since ADB is supposed to run without full android SDK installation. What is this command and how should I execute it?</p>