title: Setting a resolution for xvfb-run and wkhtmltopdf / wkhtmltoimage
body: <p>I'm trying desperately to give xvfb-run some resolution arguments to take screenshots of websites with wkhtmltox in different resolutions.</p>
  
  <p>I'm using both xvfb-run and wkhtmltox on CentOS.</p>
  
  <pre><code>xvfb-run --server-args="-screen 0 1024x768x24" wkhtmltoimage http://www.whatismyscreenresolution.com/ /tmp/bla.png
  </code></pre>
  
  <p>Unfortunately my arguments are not respected by xvfb-run. It has always a resolution of 800x600. What am I doing wrong here?</p>
  
  <p>Thanks for any help!</p>