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After upgrading to rawhide, my Java plugin no longer works. IBM's JRE fails, with the following message: java: xcb_xlib.c:50: xcb_xlib_unlock: Assertion `c->xlib.lock' failed. Taking libX11.so.6 from a Fedora 7 box (libX11-1.0.3.8.fc7) and putting that in a directory on its own, then using LD_LIBRARY_PATH to point to it, seems to 'fix' the problem. I cannot tell whether this is a problem with IBM's JRE, or whether it's a libX11 problem.
Does the jrb use async X11 interfaces similar to what gtk has in gdk/x11/gdkasync.c, perchance ? We've had to do some fixes to make that code work with the xcb-based Xlib. Comparing that might be instructive.
After reading http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6532373 I discovered that running with LD_PRELOAD=/usr/lib/libXinerama.so.1 seems sufficient to work around the problem. It's a Java bug, not Xlib. Closing.
Hi , I verified this bug against ubuntu and fedora. I tried to reproduce this BUG on fedora(fc8) and ubuntu (fiesty). But JCONSOLE works fine. Its not mentioned which application throws error here, https://bugzilla.redhat.com/show_bug.cgi?id=297891 I tried jconsole which works fine, observed in sun bugzilla. http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6532373 Following are the analysis done:: fc8test3 fresh installed machine: --------------------------------------- java package: ibm-java2-ppc64-sdk-5.0-4.0.ppc64.rpm Machine: p55 ( ppc64 ) uname -a: Linux p55lp1.in.ibm.com 2.6.23-0.214.rc8.git2.fc8 #1 SMP Fri Sep 28 17:14:38 EDT 2007 ppc64 ppc64 ppc64 GNU/Linux libX11: libX11-1.1.3-1.fc8 libxcb: libxcb-1.0-3.fc8 result: jconsole opened a window properly, without any error. Ubuntu fiesty : ---------------- java version: java version "1.6.0" Java(TM) SE Runtime Environment (build 1.6.0-b105) Java HotSpot(TM) Server VM (build 1.6.0-b105, mixed mode) uname -a: Linux omar 2.6.20-16-generic #2 SMP Thu Jun 7 20:19:32 UTC 2007 i686 GNU/Linux libX11-6: 1.1.1-1ubuntu3 libxcb1: 1.0-1.1ubuntu2 jconsole opens a window without any error. --thanks omar
Anything which uses X seems to trigger it here. See below -- the first one (obviously) fails; the second succeeds. shinybook /opt/ibm/java2-ppc-50/jre/bin $ ./ControlPanel java: xcb_xlib.c:50: xcb_xlib_unlock: Assertion `c->xlib.lock' failed. JVMDUMP006I Processing Dump Event "abort", detail "" - Please Wait. JVMDUMP007I JVM Requesting System Dump using '/opt/ibm/java2-ppc-50/jre/bin/core.20071026.075836.25627.dmp' JVMDUMP010I System Dump written to /tmp/core.20071026.075836.25627.dmp JVMDUMP007I JVM Requesting Snap Dump using '/opt/ibm/java2-ppc-50/jre/bin/Snap0001.20071026.075836.25627.trc' JVMDUMP010I Snap Dump written to /tmp/Snap0001.20071026.075836.25627.trc JVMDUMP007I JVM Requesting Java Dump using '/tmp/javacore.20071026.075836.25627.txt' JVMDUMP010I Java Dump written to /tmp/javacore.20071026.075836.25627.txt JVMDUMP013I Processed Dump Event "abort", detail "". ./ControlPanel: line 27: 25627 Aborted $ADIR/../bin/java -Djavaplugin.version=1.5.0 -Djavaplugin.nodotversion=150 com.sun.deploy.panel.ControlPanel shinybook /opt/ibm/java2-ppc-50/jre/bin $ LD_PRELOAD=/usr/lib/libXinerama.so.1 ./ControlPanel /usr/share/themes/Clearlooks/gtk-2.0/gtkrc:42: error: lexical error or unexpected token, expected valid token
hi david, /opt/ibm/java2-ppc64-50/jre/bin/ControlPanel also worked for me.. ( its a ppc64 machine), Am I missing any important step to reproduce this bug?? --thanks omar
If you're running the current Fedora rawhide on ppc or ppc64 hardware, with libX11-1.1.3-4.fc8, then I'm sure you ought to be seeing it. This is the 32-bit build of Java, not the 64-bit build. I haven't tested the 64-bit build. I see it with this package: ibm-java2-ppc-jre-5.0-5.1.ppc.rpm (and also with older versions).
Hi david, I am using ppc64 machine on Rawhide. --uname -a----- Linux p55lp1.in.ibm.com 2.6.23-0.214.rc8.git2.fc8 #1 SMP Fri Sep 28 17:14:38 EDT 2007 ppc64 ppc64 ppc64 GNU/Linux ---cat /etc/issue ------ Fedora release 7.92 (Rawhide) Kernel \r on an \m with libX11-1.1.3-1.fc8 and tried all these packages ibm-java2-ppc64-jre-5.0-5.1.ppc64.rpm ibm-java2-ppc64-sdk-5.0-4.0.ppc64.rpm ibm-java2-ppc-jre-5.0-5.1.ppc.rpm (32 bit build) It still works for me.Only thing is i use 64 bit machine with 32 bit build java. --regards omar
I see it on 64-bit machines too -- that was when I first encountered it, in fact. I wonder if you have to be using an X server with the Xinerama extension enabled? Looking at the Sun bug linked above, I think the fix is fairly clear and obvious even if you can't reproduce for yourself. If you could let me have a binary to test, I could confirm that it's fixed here.