[Bug 1182128] Re: Java plugin not loading in Firefox 21

[negora]

I also suffered from the same problem when I tried to install by hand
the latest versions of Firefox and Java Runtime Environment. I
downloaded them from their respective websites and installed them in
/usr/local/lib32/ . I followed the typical steps to add the JRE plugín
to Firefox, but they didn't worked. However, with Firefox 20 it worked
well.

The solution came from Jalzerio's message. It seems that, between
versions 20 and 21 of Firefox, Mozilla has changed the plug-in directory
location from:

$FIREFOX/plugins/

To:

$FIREFOX/browser/plugins/

I moved the plug-in to the latter and it finally worked.

Thank you Jalzeiro.

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https://bugs.launchpad.net/bugs/1182128

Title:
  Java plugin not loading in Firefox 21

Status in “icedtea-web” package in Ubuntu:
  Confirmed

Bug description:
  Java plugin is missing from about:plugins and plugin list in Firefox Add-ons-Manager, even though it is clearly installed:
  # ls -la /usr/lib/mozilla/plugins
  ...
  lrwxrwxrwx 1 root root     39 Mai 20 17:39 libjavaplugin.so -> /etc/alternatives/mozilla-javaplugin.so
  ...

  and

  # ls -la /etc/alternatives/mozilla-javaplugin.so
  lrwxrwxrwx 1 root root 64 Mai 20 17:39 /etc/alternatives/mozilla-javaplugin.so -> /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/amd64/IcedTeaPlugin.so

  PrefBar also complains "No Java Plugin found!" when trying to enable.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: icedtea-7-plugin 1.3.2-1ubuntu1
  ProcVersionSignature: Ubuntu 3.8.0-21.32-generic 3.8.8
  Uname: Linux 3.8.0-21-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  Date: Mon May 20 17:42:33 2013
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  SourcePackage: icedtea-web
  UpgradeStatus: Upgraded to raring on 2013-04-29 (21 days ago)

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