[Bug 1870813] [NEW] Scilab does not start on bionic and focal

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Simon Chopin (schopin):

[Impact]
Scilab does not start. This is a regression from an OpenJDK 11 update.

SRU TEAM: please note that scilab runs OpenJDK 8 and since Bionic we have been forcing it to use OpenJDK 11 (see bug 1814133). Since the last Bionic and Focal update there have been fixes from both upstream and Debian to improve compatibility. Apart from those fixes I would like to bring additional fixes to our LTS releases and align them better with the one on Groovy (which works fine):
* improved dependencies
* appdata/desktop fixes to improve user experience
* update from 6.0.1 to 6.0.2 in Bionic

[Test Case]
On Bionic or Focal:

Steps to reproduce:
1. Install Scilab with `sudo apt-get install scilab`
2. Try to launch Scilab from terminal by using command `scilab`

Expected results:
* Scilab started normally

Actual results:
* Scilab does not start, shows the following output in the terminal:

$ scilab
Picked up _JAVA_OPTIONS: -Djava.class.path=/usr/share/java/flexdock.jar:/usr/share/java/skinlf.jar:/usr/share/java/looks.jar:/usr/share/java/commons-logging.jar:/usr/share/java/jhall.jar:/usr/share/java/lucene-core-4.10.4.jar:/usr/share/java/lucene-analyzers-common-4.10.4.jar:/usr/share/java/lucene-queryparser-4.10.4.jar:/usr/share/maven-repo/org/freehep/freehep-util/debian/freehep-util-debian.jar:/usr/share/maven-repo/org/freehep/freehep-io/debian/freehep-io-debian.jar:/usr/share/maven-repo/org/freehep/freehep-graphicsio/debian/freehep-graphicsio-debian.jar:/usr/share/java/freehep-graphicsio-emf-2.1.jar:/usr/share/java/freehep-graphics2d-2.1.1.jar:/usr/share/java/jrosetta-API.jar:/usr/share/java/jrosetta-engine-1.0.4.jar:/usr/share/java/jgraphx.jar:/usr/share/java/jogl2.jar:/usr/share/java/gluegen2-rt.jar:/usr/share/java/jeuclid-core.jar:/usr/share/java/jlatexmath-fop-1.0.7.jar:/usr/share/java/fop.jar:/usr/share/java/saxon.jar:/usr/share/java/batik.jar:/usr/share/java/xml-apis-ext.jar:/usr/share/java/commons-io.jar:/usr/share/java/xmlgraphics-commons.jar:/usr/share/java/avalon-framework.jar:/usr/share/java/jlatexmath-1.0.7.jar:/usr/share/java/ecj.jar:/usr/share/java/javax.activation.jar:/usr/share/java/jaxb-runtime.jar:/usr/share/scilab/modules/jvm/jar/org.scilab.modules.jvm.jar:/usr/share/scilab/modules/completion/jar/org.scilab.modules.completion.jar:/usr/share/scilab/modules/graphic_export/jar/org.scilab.modules.graphic_export.jar:/usr/share/scilab/modules/external_objects_java/tests/libintl.jar:/usr/share/scilab/modules/external_objects_java/jar/org.scilab.modules.external_objects_java.jar:/usr/share/scilab/modules/scirenderer/jar/scirenderer.jar:/usr/share/scilab/modules/action_binding/jar/org.scilab.modules.action_binding.jar:/usr/share/scilab/modules/history_manager/jar/org.scilab.modules.history_manager.jar:/usr/share/scilab/modules/console/jar/org.scilab.modules.console.jar:/usr/share/scilab/modules/graphic_objects/jar/org.scilab.modules.graphic_objects.jar:/usr/share/scilab/modules/xcos/jar/org.scilab.modules.xcos.jar:/usr/share/scilab/modules/commons/jar/org.scilab.modules.commons.jar:/usr/share/scilab/modules/graph/jar/org.scilab.modules.graph.jar:/usr/share/scilab/modules/gui/jar/org.scilab.modules.gui.jar:/usr/share/scilab/modules/renderer/jar/org.scilab.modules.renderer.jar:/usr/share/scilab/modules/helptools/jar/scilab_ja_JP_help.jar:/usr/share/scilab/modules/helptools/jar/scilab_fr_FR_help.jar:/usr/share/scilab/modules/helptools/jar/scilab_pt_BR_help.jar:/usr/share/scilab/modules/helptools/jar/scilab_ru_RU_help.jar:/usr/share/scilab/modules/helptools/jar/scilab_en_US_help.jar:/usr/share/scilab/modules/helptools/jar/scilab_images.jar:/usr/share/scilab/modules/helptools/jar/org.scilab.modules.helptools.jar:/usr/share/scilab/modules/types/jar/org.scilab.modules.types.jar:/usr/share/scilab/modules/localization/jar/org.scilab.modules.localization.jar:/usr/share/scilab/modules/javasci/jar/org.scilab.modules.javasci.jar:/usr/share/scilab/modules/preferences/jar/org.scilab.modules.preferences.jar:/usr/share/scilab/modules/core/jar/org.scilab.modules.core.jar:/usr/share/scilab/modules/history_browser/jar/org.scilab.modules.history_browser.jar:/usr/share/scilab/modules/ui_data/jar/org.scilab.modules.ui_data.jar:/usr/share/scilab/modules/scinotes/jar/org.scilab.modules.scinotes.jar:
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.scilab.modules.jvm.LibraryPath (file:/usr/share/scilab/modules/jvm/jar/org.scilab.modules.jvm.jar) to field java.lang.ClassLoader.sys_paths
WARNING: Please consider reporting this to the maintainers of org.scilab.modules.jvm.LibraryPath
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Could not access to the Main Scilab Class:
Exception in thread "main" java.lang.ExceptionInInitializerError
 at org.scilab.modules.localization.Messages.gettext(Unknown Source)
 at org.scilab.modules.commons.xml.XConfiguration.<clinit>(Unknown Source)
 at org.scilab.modules.core.Scilab.<clinit>(Unknown Source)
Caused by: java.lang.NullPointerException
 at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2646)
 at java.base/java.lang.Runtime.loadLibrary0(Runtime.java:830)
 at java.base/java.lang.System.loadLibrary(System.java:1870)
 at org.scilab.modules.localization.MessagesJNI.<clinit>(Unknown Source)
 ... 3 more

Scilab cannot create Scilab Java Main-Class (we have not been able to
find the main Scilab class. Check if the Scilab and thirdparty packages
are available).

[Regression Potential]
Updating scilab fixes a regression introduced by a previous OpenJDK 11 update that prevented it from running.

* The patch that fix the library path regression OpenJDK 11 might
regress on a later if OpenJDK 11 changes how the library path is loaded.

The bug is only on the GUI version, so the patch might actually
introduce regressions in the CLI, but that is unlikely as, AIUI the Java
bits of the codebase are completely disabled in CLI mode.

The Bionic patch might be combined with another bugfix, cf comment #35

[From original report]
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: scilab 6.1.0+dfsg1-1ubuntu3
ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
Uname: Linux 5.4.0-21-generic x86_64
ApportVersion: 2.20.11-0ubuntu22
Architecture: amd64
CurrentDesktop: MATE
Date: Sat Apr  4 19:12:56 2020
InstallationDate: Installed on 2020-04-04 (0 days ago)
InstallationMedia: Ubuntu-MATE 20.04 LTS "Focal Fossa" - Beta amd64 (20200402)
PackageArchitecture: all
SourcePackage: scilab
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: scilab
     Importance: Undecided
         Status: New

** Affects: scilab (Ubuntu)
     Importance: Undecided
         Status: Fix Released

** Affects: scilab (Ubuntu Bionic)
     Importance: High
     Assignee: Simon Chopin (schopin)
         Status: Confirmed

** Affects: scilab (Ubuntu Focal)
     Importance: High
     Assignee: Simon Chopin (schopin)
         Status: Confirmed

** Affects: scilab (Ubuntu Groovy)
     Importance: Undecided
         Status: Fix Released


** Tags: amd64 apport-bug bionic focal fr-115 id-5f19ac564ce2f58d14489366 iso-testing rls-bb-incoming
-- 
Scilab does not start on bionic and focal
https://bugs.launchpad.net/bugs/1870813
You received this bug notification because you are a member of Ubuntu Sponsors Team, which is subscribed to the bug report.