title: Python Script stuck in crontab - Python - Selenium - Xvfb - Firefox - Ubuntu
body: <p>I have the following environement</p>
  
  <p>Ubuntu 14.04 LTS under ESXi
  Python, Selenium webdriver, Xvfb</p>
  
  <p>My script runs just fine if I run it manually, but got stuck when I put the script in the crontab.
  I have used the export Display correctly and the firefox process starts however the browser just greys out and gets stuck only when the crontab starts the process. If I run it manually everything is fine. It even works via telnet if I used the code below:</p>
  
  <pre><code>display = Display(visible=0, size=(1024,768))
  display.start()
  &lt;CODE&gt;
  display.stop()
  </code></pre>