REW Beta Release Installation on Kubuntu 18.04 failes on one machine on the other it works with openjdk-java.

Discussion in 'Official REW (Room EQ Wizard) Support Forum' started by D.-J. Walter, Mar 3, 2019.

  1. D.-J. Walter

    D.-J. Walter New Member
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    I installed REW 5.20Beta6 on a Lenovo B50-80 with a new installed Kubuntu 18.04 and the script worked. REW runs.
    Now two months later I tried to install REW 5.20Beta6 on a Lenovo BL540, also with a new Kubuntu 18.04 installation. I get the Java failure.

    -No suitable Java Virtual Machine could be found on your system. The version of the JVM must be 1.8.
    -Please define INSTALL4J_JAVA_HOME to point to a suitable JVM.


    On both machines I have only the openjdk and it worked on the B50. What can I do on the L540? I do not want Oracle Software. Sorry but Oracle is a ing problem making software over 20 years on windows and everywhere else. (and still allways manual work for updating).

    nn@WaZi-L540:/media/djwalter/F_Systeme/11_Anwendungen/REW$
    java -version
    openjdk version "10.0.2" 2018-07-17
    OpenJDK Runtime Environment (build 10.0.2+13-Ubuntu-1ubuntu0.18.04.4)
    OpenJDK 64-Bit Server VM (build 10.0.2+13-Ubuntu-1ubuntu0.18.04.4, mixed mode)

    sudo update-alternatives --config java
    Result: only the openjdk available
    Es gibt nur eine Alternative in Link-Gruppe java (die /usr/bin/java bereitstellt): /usr/lib/jvm/java-11-openjdk-amd64/bin/java

    Nichts zu konfigurieren.

    Kind regards

    D.-J.
     
  2. John Mulcahy

    John Mulcahy REW Author

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    You missed an important detail in the message: The version of the JVM must be 1.8

    REW needs a Java 8 runtime.
     
  3. D.-J. Walter

    D.-J. Walter New Member
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    Thank you for the fast reply.
    Yes -on the B50-80 was a JDK 8 installed, that was the reason why it worked on this machine. I installed OpenJDK8 with:
    sudo apt-get install openjdk-8-jre icedtea-8-plugin
    The check with
    sudo update-alternatives --config java
    shows now

    Auswahl Pfad Priorität Status
    ------------------------------------------------------------
    * 0 /usr/lib/jvm/java-11-openjdk-amd64/bin/java 1101 automatischer Modus
    1 /usr/lib/jvm/java-11-openjdk-amd64/bin/java 1101 manueller Modus
    2 /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java 1081 manueller Modus

    and REW-Installation worked.
     

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