Geogebra doesn't start on Ubuntu 18.04

Indrjo Dedej shared this question 4 years ago
Answered

Hi guys!


I have just installed geogebra with the command

sudo apt-get install geogebra
but geogebra never starts. I don't know why this beahviour. Could you help me?

Comments (4)

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1

Hi :)


I've addressed your question to the Team, since I'm not an Ubuntu user and currently no one here was able to help.

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2

Hi,


- uninstall the geogebra package : it is the old 4.2 version on Ubuntu


and/or

- load/install the GeoGebra classic 5 named geogebra5 : download from : https://www.geogebra.org/download

- load/install the GeoGebra classic 6 named geogebra-classic: download from : https://www.geogebra.org/download

both work at home with Ubuntu 18.04 64 bit

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1

Thanks a lot for the answers! :-)

I know geogebra installed with


sudo apt-get install geogebra

is a old version, but I like it more than the newer ones.


I will try GeoGebra classic 6. Anyway I'd like, if possible, to have news about this problem.

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Geogebra installed on Ubuntu 18.04 Bionic is version 4.0.34. It starts with the following output in the Terminal, immediately exiting afterwards:

$ geogebra 
GeoGebra 4.0.34.0 (Debian version 4.0.34.0+dfsg1-4) 22 June 2012 Java 10.0.2
*** Message from [geogebra.main.Application.setUpLogging]
	/tmp/GeoGebraLog_evysubeckj.txt

The logfile mentioned by the terminal output shows the following exception:

java.lang.ClassCastException: java.base/jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to java.base/java.net.URLClassLoader
        at geogebra.plugin.ClassPathManipulator.addURL(ClassPathManipulator.java:68)
        at geogebra.plugin.PluginManager.<init>(PluginManager.java:80)
        at geogebra.main.Application.getPluginManager(Application.java:5048)
        at geogebra.main.Application.<init>(Application.java:612)
        at geogebra.main.Application.<init>(Application.java:467)
        at geogebra.gui.app.GeoGebraFrame.createApplication(GeoGebraFrame.java:288)
        at geogebra.gui.app.GeoGebraFrame.createNewWindow(GeoGebraFrame.java:311)
        at geogebra.gui.app.GeoGebraFrame.createNewWindow(GeoGebraFrame.java:276)
        at geogebra.gui.app.GeoGebraFrame.init(GeoGebraFrame.java:242)
        at geogebra.gui.app.GeoGebraFrame.main(GeoGebraFrame.java:196)
        at geogebra.GeoGebra.startGeoGebra(GeoGebra.java:103)
        at geogebra.GeoGebra.main(GeoGebra.java:88)
Running "geogebra --help" shows some command line options, including memory settings for Java. Those, unfortunately, don't change anything in the situation, either.


Would be nice if the installer could be updated.

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