Public bug reported:
When launching the java desktop application Fiji (https://fiji.sc) using
the system-wide openjdk 8u252, the UI is frozen. After trying many
relaunches, occasionally (1 our of 30 times or so), the application
isn't frozen, indicating some sort of race condition.
When the UI is frozen, the jconsole indicates that the event dispatch
thread is blocked:
```
Name: AWT-EventQueue-1
State: BLOCKED on java.awt.Component$AWTTreeLock@1bde9d17 owned by: main
Total blocked: 10 Total waited: 61
Stack trace:
java.awt.Container.dispatchEventImpl(Container.java:2300)
java.awt.Component.dispatchEvent(Component.java:4711)
java.awt.EventQueue.dispatchEventImpl(EventQueue.java:760)
java.awt.EventQueue.access$500(EventQueue.java:97)
java.awt.EventQueue$3.run(EventQueue.java:709)
java.awt.EventQueue$3.run(EventQueue.java:703)
java.security.AccessController.doPrivileged(Native Method)
java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:84)
java.awt.EventQueue$4.run(EventQueue.java:733)
java.awt.EventQueue$4.run(EventQueue.java:731)
java.security.AccessController.doPrivileged(Native Method)
java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
java.awt.EventQueue.dispatchEvent(EventQueue.java:730)
org.GNOME.Accessibility.AtkWrapper$6.dispatchEvent(AtkWrapper.java:705)
java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
```
When launching the Fiji java desktop application with openjdk java
8u172, no such problem occurs ever.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: openjdk-8-jdk 8u252-b09-1ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-31.35-generic 5.4.34
Uname: Linux 5.4.0-31-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Fri May 22 22:41:17 2020
EcryptfsInUse: Yes
InstallationDate: Installed on 2016-06-24 (1428 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
SourcePackage: openjdk-8
UpgradeStatus: Upgraded to focal on 2020-05-20 (2 days ago)
** Affects: openjdk-8 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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https://bugs.launchpad.net/bugs/1880246
Title:
Java desktop application freezes with openjdk 8u252
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