python linux selenium: chrome not reachable : <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>
