Avocent 8020 KVM Java Icedtea Viewer

It seems every other updated version of Java or Icedtea breaks things and I will save the frustration of Java for another post.

*If you get the icedteaweb window but nothing loads or prompts it is probably your security settings that won't even prompt to run it.   See this article to solve that problem.

To fix this error you need to edit the java.security file manually (I recommend updating all in case there is any confusion about what version is being executed):

Solution

sudo vi /usr/lib/jvm/*/jre/lib/security/java.security

Notice the * (wildcard) this will have vi open up every version's java security for you to change or you could also try the most recent version.

Make the following line look like this:

jdk.tls.disabledAlgorithms=SSLv3, RC4

jdk.certpath.disabledAlgorithms=MD2

After that the error was fixed and finally the KVM viewer worked again (I wish you could just use VNC or other more reliable ways).

*Update - newer versions have a few more config lines you have to fix:

jdk.certpath.disabledAlgorithms=MD2
jdk.jar.disabledAlgorithms=MD2
jdk.tls.disabledAlgorithms=SSLv3, RC4

 

Errors that you will get before solving this problem:


net.sourceforge.jnlp.LaunchException: Fatal: Launch Error: Could not launch JNLP file. The application has not been initialized, for more information execute javaws/browser from the command line and send a bug report.
    at net.sourceforge.jnlp.Launcher.launchApplication(Launcher.java:580)
    at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:936)
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at net.sourceforge.jnlp.Launcher.launchApplication(Launcher.java:574)
    ... 1 more
Caused by: java.security.AccessControlException: access denied ("java.util.PropertyPermission" "user.name" "read")
    at java.security.AccessControlContext.checkPermission(AccessControlContext.java:472)
    at java.security.AccessController.checkPermission(AccessController.java:884)
    at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
    at java.lang.SecurityManager.checkPropertyAccess(SecurityManager.java:1294)
    at java.lang.System.getProperty(System.java:717)
    at com.avocent.lib.gui.ShowDuplicateApp.(ShowDuplicateApp.java:200)
    at com.avocent.video.Stingray.(Unknown Source)
    at com.avocent.video.Stingray.launch(Unknown Source)
    at com.avocent.video.Stingray.main(Unknown Source)
    ... 6 more


Tags:

avocent, kvm, icedtea, viewer, updated, frustration, icedteaweb, loads, prompts, settings, prompt, edit, manually, updating, confusion, executed, sudo, vi, usr, lib, jvm, jre, wildcard, jdk, tls, disabledalgorithms, sslv, rc, certpath, md, vnc, reliable, update, newer, versions, config, jar, errors, solving, sourceforge, jnlp, launchexception, fatal, initialized, execute, javaws, browser, launcher, launchapplication, tgthread, lang, reflect, invocationtargetexception, nativemethodaccessorimpl, invoke, native, method, delegatingmethodaccessorimpl, accesscontrolexception, quot, util, propertypermission, user, accesscontrolcontext, checkpermission, accesscontroller, securitymanager, checkpropertyaccess, getproperty, gui, showduplicateapp, stingray,

Latest Articles

  • CentOS 8 how to restart the network!
  • CentOS 8 how to convert to a bootable mdadm RAID software array
  • ADATA USB Thumb Drive Issues
  • KMODE EXCEPTION NOT HANDLED - QEMU/KVM Won't Boot Windows 2016 or 10 Image or Physical Machine
  • Linux Mint / Ubuntu / Debian Mate Disable Guest Session and Hide Usernames on Lightdm Login screen GUI
  • SSH How To Create Public/Private Key Pair and with a Larger Keysize than 2048 bits
  • selenium.common.exceptions.WebDriverException: Message: Can not connect to the Service geckodriver
  • python ModuleNotFoundError: No module named 'bs4' even though you have the module
  • ssh how to connect using a SOCKS 5 proxy with nc and proxycommand
  • Enable AMDGPU Linux Driver
  • apache symlinks denied even with followsymlinks
  • chown how to change ownership on a symlink
  • how to use ifplugd in Linux to execute a command or script when a NIC cable is unplugged or plugged in
  • dd how to backup and restore disk images including compression with gzip
  • mpv / mplayer with Radeon / AMD GPU Video Card Driver enable VDPAU GPU Accelerated Video Decoding
  • Wordpress Reset Blog User Password from MySQL Using Linux Bash and not PHPMyadmin
  • Ubuntu Linux Mint Debian xorg performance and tear-free tuning for AMD Radeon Based Cards
  • Centos 7 Stopped and Disabled Firewalld and ports still blocked
  • MariaDB / MySQL Reset Root Forgotten Password on Centos 7
  • Centos 7 How to install Mysql/Mariadb