Captcha does not load in Linux

[Migrated From Jforum.net]

Hi,

After enabling captcha in registration form i recieve an exception
java.lang.IntenalError : could not load X11 0:0
my Video Card is NVidia
my OS is Fedora 9
[originally posted on jforum.net by omidp]

[Migrated From Jforum.net]

This is probably happening because this is a server install and doesn't have X11 installed. There is a know java issue when using image function in such an environment.

The solution is to add the following parameter to your JRE startup: -Djava.awt.headless=true

For details about this mode see:

http://java.sun.com/developer/technicalArticles/J2SE/Desktop/headless/

For information about how to do set up your application server to use this setting, see that documentation.
[originally posted on jforum.net by monroe]