[CentOS] Java plugin (icedtea-web) does not load

Tue Aug 19 12:57:20 UTC 2014
Liam O'Toole <liam.p.otoole at gmail.com>

On 2014-08-18, Toralf Lund <toralf.lund at pgs.com> wrote:
> On 17/08/14 20:04, Liam O'Toole wrote:
>> On 2014-08-17, Toralf Lund <Toralf.Lund at pgs.com> wrote:
>>> Hi,
>>> After some recent upgrade or the other, the browser plugin for java no longer works in my CentOS 6 x86_64 setup - using Firefox. Applets won't load, and no java plugin is mentioned in "about:plugins". The "openjdk" Java packages as well as icetea-web are installed, though, and everything worked just fine a few weeks ago.
>>> Has anyone else seen this? Any idea what may be wrong and/or how to diagnose the problem? Should I expect error messages anywhere if the plugin just won't load (can't see anything in the browser console)?
>>> Note that when I talk about upgrades, I mean that I generally install all "notified" system updates.
>>> - Toralf
>> Does the file /usr/lib64/mozilla/plugins/libjavaplugin.so exist, and does
>> it link (indirectly) to /usr/lib64/IcedTeaPlugin.so? You can check using
>> the following command:
>> 	readlink -e /usr/lib64/mozilla/plugins/libjavaplugin.so
> I forgot to tell, I checked all "obvious" things like that. And yes, the 
> file points where it should.
> - Toralf

All I can think of is to run 'rpm -V' on the packages which own the
above files, and also look for clues in ~/.xsession-errors and
/var/log/messages upon starting firefox. I'm sure if those suggestions
are obvious. :-)