title: Selenium fails to start Chromedriver
body: <p>I am unable to start <code>Chromedriver</code> with <code>Selenium</code>. </p>
  
  <pre><code>from selenium import webdriver
  
  browser = webdriver.Chrome()
  browser.get('http://www.google.com')
  </code></pre>
  
  <p><strong>It never gets to</strong> <code>browser.get('http://www.google.com')</code> but fails with:</p>
  
  <pre><code>    raise exception_class(message, screen, stacktrace)
  selenium.common.exceptions.WebDriverException: Message: unknown error: Chrome failed to start: exited abnormally
    (Driver info: chromedriver=2.21.371461 (633e689b520b25f3e264a2ede6b74ccc23cb636a),platform=Linux 3.13.0-76-generic x86_64)
  </code></pre>
  
  <p>I am on <code>Ubuntu 14.04</code> (64b) using <code>Python 2.7.6</code> (<em>virtualenv</em> installation) and <code>selenium==2.50.1</code>.</p>
  
  <pre><code>dm@Z580:~$ which chromedriver
  /usr/local/bin/chromedriver
  
  dm@Z580:~$ ll /usr/local/bin/chromedriver
  lrwxrwxrwx 1 root root 24 feb  4 22:13 /usr/local/bin/chromedriver -&gt; /opt/google/chromedriver*
  </code></pre>
  
  <p><strong>EDIT</strong></p>
  
  <pre><code>dm@Z580:~$ google-chrome --version
  Google Chrome 48.0.2564.97 
  </code></pre>
  
  <p>Downgraded to <code>Chromedriver 2.20</code>:</p>
  
  <pre><code>wget http://chromedriver.storage.googleapis.com/2.20/chromedriver_linux64.zip
  unzip chromedriver_linux64.zip
  chmod 777 chromedriver
  sudo mv -f chromedriver /opt/google/chromedriver
  </code></pre>
  
  <p>but, sadly, still the same result.</p>
  
  <p>Any idea why is this happening?</p>