title: python linux selenium: chrome not reachable
body: <p>I'm trying to run selenium on Ubuntu 16.10 Server, but I'm getting WebDriverException : Message : chrome not reachable (Driver info: chromedriver 2.9.248304, platform=Linux 4.8.0-22-generic x86_64)</p>
  
  <pre><code>from pyvirtualdisplay import Display
  from selenium import webdriver
  
  display = Display(visible=0, size=(800, 600))
  display.start()
  
  browser = webdriver.Chrome('usr/bin/chromedriver')
  browser.get('http://www.google.com')
  print(browser.title)
  browser.quit()
  
  display.stop()
  </code></pre>
  
  <p>Chrome is installed: </p>
  
  <pre><code>google-chrome --version
  </code></pre>
  
  <p>Google Chrome 57.0.2987.110</p>