View Full Version : [ubuntu] Java Applet Capability Not Recognized by site?

March 4th, 2010, 04:23 AM
9.10 amd64. Java is fully enabled in my Firefox browser but one site that I would like to use doesn't seem to recognize it. Please see the attached screen shots. Any ideas?

March 8th, 2010, 06:56 AM
I have the same problem. Ubuntu 9.10 i386.
Trying to play Dragondot.


Doesn't register. Why not? I have both IcedTea and JRE6 installed.

March 8th, 2010, 07:04 AM
I should mention that I have Namoroka installed. And the plugin does not show up. Unfortunately I've cleansed my system of Firefox 3.5 --- so I can't test that the issue is really my browser version.

March 8th, 2010, 07:10 AM
Fixed! I simply had to create a symlink from the java path to the plugins path. I did:
sudo ln -s /usr/lib/jvm/java-6-sun- ~/.mozilla/plugins/libnpjp2.so

So in your case, do:
sudo ln -s /usr/lib/jvm/java-6-sun- ~/.mozilla/plugins/libnpjp2.so

Or wherever your plugin directory is.

March 8th, 2010, 03:05 PM
Thank you for the suggestion, but no joy. We don't seem to have the exact same issue. I put in the link that you suggested but the failure remained the same. Since the Java verification sites indicate correct operation, libnpjp2.so seems to being accessed within its primary directory.

I went to the Dragondot website and the game played without error (without the link to libnpjp2.so in place) so this indicates that our problems are different.

March 9th, 2010, 04:05 AM
Perhaps there is some security layer imposed that the version of java you are using does not support (at least in linux/64-bit)? Do you use any adblocking software.

March 9th, 2010, 04:22 AM
NO ad-blocking software. Pure Sun Java - java-6-sun- Since it passes multiple java testing sites without a problem I am having trouble figuring it out.

March 9th, 2010, 04:24 AM
Right. It must relate to something to do with their particular applet.

February 17th, 2011, 03:08 AM

I had a semi-nice long response as to what I did but the internet ate it. :-?

Basically, concerning streetsmart.com, I uninstalled all other JRE packages, restarted Ubuntu, installed the latest Sun JRE, made a symbolic link to the libjavaplugin_oji.so plugin like so (use the current version of course):


reopened firefox, and I was able to access the streetsmart.com tool.

It works with Chromium as well.

Hope this helps someone else.