Last Published: 25 Jun 2008 | Version: 1.0-rc-1-SNAPSHOT Headless X11 with Xvfb To allow builds on headless Unix systems to function correctly with Selenium, you may need to configure Xvfb (virtual framebuffer X server for X Version 11). Use the xvfb goal to start up an Xvfb process. This will try to detect an unused X11 display starting from :20 and configure the Selenium server with that DI