<html> <head> <base href="https://bugs.documentfoundation.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_UNCONFIRMED " title="UNCONFIRMED - Forms and reports hang" href="https://bugs.documentfoundation.org/show_bug.cgi?id=113937#c19">Comment # 19</a> on <a class="bz_bug_link bz_status_UNCONFIRMED " title="UNCONFIRMED - Forms and reports hang" href="https://bugs.documentfoundation.org/show_bug.cgi?id=113937">bug 113937</a> from <a class="email" href="mailto:RPeters52@gmail.com" title="Ralph Peters <RPeters52@gmail.com>"> Ralph Peters</a> <pre>(In reply to Alex Thurgood from <a href="show_bug.cgi?id=113937#c18">comment #18</a>) > @Ralph : as you mention that you have programming experience, perhaps you > could install either the debug code for the version of LO that comes with > your distrib and try and obtain a backtrace using gdb when the app hangs. > That at least might point in the right direction. > > The problem with LO5162 as provided by the distro is that it is, to all > intents and purposes, obsolete, and no longer supported by TDF. Whether or > not Ubuntu still provides updates and fixes for that version is another > matter altogether and not within the LibreOffice project's control. > > Another avenue to explore is the version of JDK/JVM. The report-builder, as > does embedded hsqldb, uses Java to function correctly, and perhaps a SIGSEGV > in the JVM, for whatever reason, is subsequently causing LO to hang. You > might want to look through your logs to see if there are any traces of hangs > registered there when using LibreOffice and that particular ODB file. > > If we don't have a copy of the database, and I understand your reticence to > post a copy on this bug report, then it is going to be very difficult for us > to reproduce. If your database contains confidential information then > posting it to this bug report is not a good idea, as it will become public. > > There are/were known mutex release issues that sometimes occur(red) with > LibreOffice Base, particularly when switching between Forms and Reports. The > behaviour you describe might be one such occurrence, which is why I > suggested trying to obtain a backtrace with a debug build (or the associated > debug symbol code provided with the distro version). Hi Alex, Where do I get the debug code? I could wander the web but thought that I would ask. I am currently using version 5.4.3.2 of LibreOffice which I downloaded from the LibreOffice site. Ahh gdb.... I remember it well...with fondness based on many hours(days, weeks...) using it inside emacs. (Maybe not fondness, but it was a great tool.) I have not used it for a few years, so I may have a few questions about what would make sense to do. Are you suggesting just a simple run and then look at the backtrace after I kill it?? A set of suggestions to get me re-started might speed things up. Is "main" LibreOffice code c++? Or one of the newer languages? I know that hsqldb is java. Which logs should I look at during and after a "hang"? Suggestions appreciated! You mentioned mutex issues and that sounds right to me. On occasion, after I killed LibreOffice in the standard gui manner ("Wait" or "Force Quit"), I have checked "top" and found soffice.bin was still running and chewing up a lot of cpu (40%) after it was "killed". Ralph -------------------------------------------- I CHECKED ON THE INSTALLED PACKAGES FOR JAVA and JDK. Are these appropriate? JAVA: dpkg -l | grep java ii ca-certificates-java 20160321 all Common CA certificates (JKS keystore) ii cjs 3.4.4+sonya amd64 Mozilla-based javascript bindings for the Cinnamon platform ii gir1.2-javascriptcoregtk-3.0:amd64 2.4.11-0ubuntu0.1 amd64 JavaScript engine library from WebKitGTK+ - GObject introspection data ii gir1.2-javascriptcoregtk-4.0:amd64 2.18.3-0ubuntu0.16.04.1 amd64 JavaScript engine library from WebKitGTK+ - GObject introspection data ii gjs 1.44.0-1ubuntu1 amd64 Mozilla-based javascript bindings for the GNOME platform ii java-common 0.56ubuntu2 all Base package for Java runtimes ii libapache-pom-java 10-2build1 all Maven metadata for all Apache Software projects ii libatk-wrapper-java 0.33.3-6 all ATK implementation for Java using JNI ii libatk-wrapper-java-jni:amd64 0.33.3-6 amd64 ATK implementation for Java using JNI (JNI bindings) ii libcjs0f 3.4.4+sonya amd64 Mozilla-based javascript bindings for the Cinnamon platform ii libcommons-beanutils-java 1.9.2-3 all Apache Commons BeanUtils - Utility for manipulating Java beans ii libcommons-collections3-java 3.2.2-1 all Apache Commons Collections - Extended Collections API for Java ii libcommons-compress-java 1.10-2 all Java API for working with compression and archive formats ii libcommons-digester-java 1.8.1-4 all Rule based XML Java object mapping tool ii libcommons-logging-java 1.2-1+build1 all common wrapper interface for several logging APIs ii libcommons-parent-java 39-3 all Maven metadata for Apache Commons project ii libdb-je-java 3.3.98-1 all Oracle Berkeley Database Java Edition ii libgjs0e 1.44.0-1ubuntu1 amd64 Mozilla-based javascript bindings for the GNOME platform ii libhsqldb1.8.0-java 1.8.0.10+dfsg-6 all Java SQL database engine ii libicu4j-java 4.2.1.1-3 all Library for Unicode support and internationalization ii libjavascriptcoregtk-1.0-0:amd64 2.4.11-0ubuntu0.1 amd64 JavaScript engine library from WebKitGTK+ ii libjavascriptcoregtk-3.0-0:amd64 2.4.11-0ubuntu0.1 amd64 JavaScript engine library from WebKitGTK+ ii libjavascriptcoregtk-4.0-18:amd64 2.18.3-0ubuntu0.16.04.1 amd64 JavaScript engine library from WebKitGTK+ ii libjaxp1.3-java 1.3.05-2ubuntu3 all Java XML parser and transformer APIs (DOM, SAX, JAXP, TrAX) ii libjtidy-java 7+svn20110807-4 all JTidy ii liblucene2-java 2.9.4+ds1-4 all Full-text search engine library for Java(TM) ii libobasis5.4-extension-javascript-script-provider 5.4.3.2-2 amd64 Script provider for JavaScript extension for LibreOffice 5.4 .3.2 ii libservlet2.5-java 6.0.45+dfsg-1 all Servlet 2.5 and JSP 2.1 Java API classes ii libservlet3.0-java 7.0.68-1ubuntu0.1 all Servlet 3.0 and JSP 2.2 Java API classes ii libservlet3.1-java 8.0.32-1ubuntu1.4 all Servlet 3.1, JSP 2.3, EL 3.0 and WebSocket 1.0 Java API classes ii plasma-scriptengine-javascript 4:15.12.3-0ubuntu1 amd64 JavaScript script engine for Plasma JDK: dpkg -l | grep jdk ii openjdk-8-jre:amd64 8u151-b12-0ubuntu0.16.04.2 amd64 OpenJDK Java runtime, using Hotspot JIT ii openjdk-8-jre-headless:amd64 8u151-b12-0ubuntu0.16.04.2 amd64 OpenJDK Java runtime, using Hotspot JIT (headless)</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>