Ubuntu update kills Arduino program

Forum 2005-2010 (read only) Hardware Troubleshooting
1

I just did an update, unfortunately I don't see what got updated but I can only assume java did, and now when I try to launch the program I get this:

Experimental:  JNI_OnLoad called.
Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7

and then it hangs until I close the window.

Any ideas?

2

Hi,
very annoying feature of Ubuntu always going back to some non-working Java-Runtime, but this should allow you to switch back to sun-java-6

Choosing the default Java to use

Just installing new Java flavours does not change the default Java pointed to by /usr/bin/java. You must explicitly set this:

  • Open a Terminal window

Run sudo update-java-alternatives -l to see the current configuration and possibilities.
*

Run sudo update-java-alternatives -s XXXX to set the XXX java version as default. For Sun Java 6 this would be sudo update-java-alternatives -s java-6-sun
*

Run java -version to ensure that the correct version is being called.

You can also use the following command to interactively make the change;

  • Open a Terminal window

Run sudo update-alternatives --config java

  • Follow the onscreen prompt

from Java - Community Help Wiki

Eberhard

3

hmmm I changed it from java-6-openjdk to java-6-sun and vice versa and it still hangs.
Doesn't give me an error or anything.

4

Which version of ubuntu have you updated to?
Are you running the 64 or 32 bit version?

5

I'm running the latest version Jaunty 32bit Netbook remix vesion. There seems to be some other weirdness with my java, I'm going to see if I can't reinstall it or something.

6

Also I didn't upgrade to a new version of ubuntu, I just let the update manager do it's thing and bam I couldn't use Arduino again.