Red Hat Bugzilla – Bug 151879
Java Plug-in (Blackdown) crashes Fedora Core 4 on AMD64
Last modified: 2007-11-30 17:11:02 EST
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User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.7.6) Gecko/20050308 Firefox/1.0.1 Fedora/1.0.1-5
Description of problem:
Installed Fedora Core4 test1. Did NOT select java packages. Separately downloaded JDK 1.4.2 and JRE 1.5.0. Manually linked Java plugin to the plugins directory under /usr/lib64/firefox1.0.1/plugins. Java is enabled in Firefox. We have tried the plugin under Java 1.4 and also under 1.5. Neither of these plugins is recognized by Firefox. Other aspects of the both JDK 1.4/1.5 appear to work correctly.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
Steps are described in the Description field.
Actual Results: Web site claims that plug-in is not installed.
Expected Results: Java applet would display.
Are you sure the java you downloaded is native x86_64 binaries?
OK. You are correct that I did not have the x86_64 binaries. So I went back
to sun and found the AMD64 for J2SE 5.0 and installed it. This did not have a
plugins directory. Then, I went to Blackdown and downloaded the 1.4 J2SE for
AMD 64. This did have a plugin directory and I made the appropriate link.
When I went to the Yahoo games page, now the Java plugin was recognized, but
Firefox crashed. Finally, I did go back and install the Java development
package from the Fedora CDs. This did not seem to provide a plugin either.
So, in short, what is the correct source for the AMD64 plugin and how do I make
OK, this isn't a Fedora bug per-se, but maybe Andrew would know the answer.
Andrew, do you know if there exists a x86_64 java plugin that works with FC4?
Tom would know best.
So the plugin shows up when you browse to "about:plugins"? Are you linking the
plugin *directory* somewhere or an individual plugin? What is the "appropriate
link" you created? Crashes like these are usually caused by ABI differences in
the C++ compilers used to build firefox and the plugin. IBM differentiates
plugins compiled with different ABIs by different suffixes on libjavaplugin.
Are multiple libjavaplugin files shipped with the Blackdown JRE?
In firefox, I cannot find an "About: Plugins" under Help or any other menu. I
know that the plug-in is recognized because when I go to the yahoo site which
requires Java, it brings up the Java coffee cup.
The Blackdown JVM has only one plug-in supplied for their AMD64 version. I am
linking this individual plug-in to the same name in the plugins directory under
In the last sentence, I should have said "/usr/lib64/firefox-1.01/plugins. This
is the same directory where the null plugin is located.
You just put "about:plugins" into the URL bar and it shows you plugins that the
browser is using.
OK. I put "about:plugins" in the URL bar and it showed that the Blackdown
plugin was being used and provided a long list of java services that were handled.
Is this still an issue with the latest FC4 versions?
What if you remove the JVM probing stuff from /usr/bin/firefox?
No. This is no longer a problem.
Cool. Resolving worksforme. Thanks for the report.