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

[Nikita V. Youshchenko]

I've been observing this issue on Debian system.

After some exploration I found /usr/lib/mozilla/plugins/libjavaplugin.so
pointing to non-existing /etc/alternatives/mozilla-javaplugin.so -
perhaps left from some random upgrade.

Repointing that to existing /etc/alternatives/iceweasel-javaplugin.so
fixed the issue.

I know that Ubuntu uses mozilla corporation's firefox, not debian's
rebranded iceweasel, however packaging has much in common and thus
reason in ubunto could be similar.

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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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