Java broke after latest Ubuntu update

[captain_rob]

Today Ubuntu updated Sun Java on my lucid 10.04, but there is something wrong.

java -version gives:
java version "1.6.0_26"
Java(TM) SE Runtime Environment (build 1.6.0_26-b03)
Java HotSpot(TM) Client VM (build 20.1-b02, mixed mode, sharing)

However when I test Java on ://java.com/en/download/testjava.jsp I get "Something is wrong. Java is not working". Besides when I check about : plugins the Java plugin is now not installed anymore in Firefox 8.0.

What happened and what can I do?

[kamaji792]

Running 10.04 Desktop - I looked at the link you posted. My Firefox 8.0 is told it is working fine but then I am using Java SE 6 Update 20 (it does tell me an update is available).

Looking in the Firefox addons there is no Java addon in Extensions or Plugins, so I don't think that is your problem.

I'd be tempted to remove Java and re-install. Not sure how else you might track the problem.

atb k

[Lampi]

confirmed in kubuntu lucid 32bit and

- firefox 3.6.24
- chrome 16.0.912.63
- opera 11.60 Build 1185

None of them does list java in aboutlugins anymore

I guess one of those 3 packages messed it up:

sun-java6-bin_6.26-2lucid1_i386.deb
sun-java6-jre_6.26-2lucid1_all.deb
sun-java6-plugin_6.26-2lucid1_i386.deb

Edit: Bugreport: https://bugs.launchpad.net/ubuntu/+s...a6/+bug/905026

Bug is confirmed, workaround is the jre binary from the oracle site, or the usual java ubuntu ppas ...

I prefer to wait until they fix it @canonical

[ubto66]

After updating to java 6 update 30 it does not work.
Is there a way I can get java 6 update 29 back?
Thanks.

[Lampi]

@ubto66: here's how I downgraded to the last working version @canoncial, now java is working again

Will only work on Lucid and Canonical packages
Edit 2: canonical removed last working version, so this won't work anymore, sorry

sudo aptitude install sun-java6-bin=6.26-1lucid1 sun-java6-plugin=6.26-1lucid1
apt-cache policy sun-java6-bin

sun-java6-bin:
  Installed: 6.26-1lucid1
  Candidate: 6.26-2lucid1
  Version table:
     6.26-2lucid1 0
        500 http://archive.canonical.com/ lucid/partner Packages
 *** 6.26-1lucid1 0
        100 /var/lib/dpkg/status

Edit: Optional: Set java packages on hold until they fix it:

sudo aptitude hold sun-java6-bin sun-java6-jre sun-java6-plugin

once they fixed it it's aptitude unhold ...

[ubto66]

Thank you lampi.
I'm not that skilled on ubuntu, so all this
#!/bin/bash

OLDPWD=$PWD

mkdir /tmp/revert-java
cd /tmp/revert-java

wget http://archive.canonical.com/pool/pa...ucid1_i386.deb
wget http://archive.canonical.com/pool/pa...lucid1_all.deb
wget http://archive.canonical.com/pool/pa...ucid1_i386.deb

dpkg -i sun-java6-bin_6.26-1lucid1_i386.deb sun-java6-jre_6.26-1lucid1_all.deb sun-java6-plugin_6.26-1lucid1_i386.deb

apt-cache policy sun-java6-bin

cd $OLDPWD


~$ apt-cache policy sun-java6-bin
sun-java6-bin:
Installed: 6.26-1lucid1
Candiate: 6.26-2lucid1
History:
6.26-2lucid1 0
500 http://archive.canonical.com/ lucid/partner Packages
*** 6.26-1lucid1 0
100 /var/lib/dpkg/status
is to be run in terminal?

[Lampi]

@ubto66: found an easier way - try the aptitude line from terminal

btw: if you are not using lucid this will not work for you -> you'll have to change the line to natty or whatever ubuntu you are using

[yndesai]

Today Ubuntu updated Sun Java on my lucid 10.04, but there is something wrong.

java -version gives:
java version "1.6.0_26"
Java(TM) SE Runtime Environment (build 1.6.0_26-b03)
Java HotSpot(TM) Client VM (build 20.1-b02, mixed mode, sharing)

However when I test Java on ://java.com/en/download/testjava.jsp I get "Something is wrong. Java is not working". Besides when I check about : plugins the Java plugin is now not installed anymore in Firefox 8.0.

What happened and what can I do?

Once you upgrade the firefox to firefox 8.0 there is one issue. The plugins location
is change to /usr/lib/firefox-8.0/plugins/ from /usr/lib/firefox/plugins/

and hence you need to move files from /usr/lib/firefox/plugins/ to /usr/lib/firefox-8.0/plugins/ especially your link to libnpjp2.so

You can also create a new link in the /usr/lib/firefox-8.0/plugins/

To understand the above you may also refer:

http://www.java.com/en/download/help/linux_install.xml

I could solve my issue in this way hope you can too.

[captain_rob]

Thanks Yndesal, you pointed me in the right direction.

However my firefox plugins are in:
cd /usr/lib/mozilla/plugins
and my Java (from canonical partners repositories) in:
/usr/lib/jvm/java-6-sun/jre/lib/i386

So I could solve my problem with:

cd /usr/lib/mozilla/plugins
sudo ln -s /usr/lib/jvm/java-6-sun/jre/lib/i386/libnpjp2.so

[captain_rob]

Thanks Yndesai, you pointed me in the right direction.

However my firefox plugins are in:
cd /usr/lib/mozilla/plugins
and java (from canonical partners repositories) in:
/usr/lib/jvm/java-6-sun/jre/lib/i386

So I could solve my problem with:

cd /usr/lib/mozilla/plugins
sudo ln -s /usr/lib/jvm/java-6-sun/jre/lib/i386/libnpjp2.so