MATLAB Central Newsreader - Locking assertion failure.

Locking assertion failure.

stephan — Thu, 10 Apr 2008 08:19:02 -0400

Hi group,

whenever I try to start MATLAB 2006a (7.2.0.294) under
Linux, I get the above error. This only happens when I try
to start it running in 24 bit resolution.

Here's the complete backtrace:
#0 /usr/lib/libxcb-xlib.so.0 [0xb5c60767]
#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_unlock+0x31) [0xb5c608b1]
#2 /usr/lib/libX11.so.6(_XReply+0xfd) [0xb5f2b1bd]
#3
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/xawt/libmawt.so
[0xa1b2826a]
#4
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/xawt/libmawt.so
[0xa1b0e352]
#5
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/xawt/libmawt.so
[0xa1b0e599]
#6
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/xawt/libmawt.so(Java_sun_awt_X11GraphicsEnvironment_initDisplay+0x24)
[0xa1b0e7a4]
#7 [0xae560b8b]
#8 [0xae55aa7b]
#9 [0xae55aa7b]
#10 [0xae558157]
#11
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/client/libjvm.so
[0xb31ab8ec]
#12
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/client/libjvm.so
[0xb329a378]
#13
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/client/libjvm.so
[0xb31ab71f]
#14
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/client/libjvm.so(JVM_DoPrivileged+0x2db)
[0xb3203ebb]
#15
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/libjava.so(Java_java_security_AccessController_doPrivileged__Ljava_security_PrivilegedAction_2+0x3d)
[0xb379e2cd]
#16 [0xae56043b]
#17 [0xae55a9a4]
#18 [0xae558157]
#19
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/client/libjvm.so
[0xb31ab8ec]
Locking assertion failure. Backtrace:
#0 /usr/lib/libxcb-xlib.so.0 [0xb5c60767]
#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_lock+0x2e) [0xb5c6081e]
#2 /usr/lib/libX11.so.6 [0xb5f2a518]
#3 /usr/lib/libX11.so.6(XGetVisualInfo+0x26) [0xb5f210a6]
#4
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/xawt/libmawt.so
[0xa1b0d227]
#5
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/xawt/libmawt.so
[0xa1b0d4b8]
#6
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/xawt/libmawt.so
[0xa1b0e6e0]
#7
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/xawt/libmawt.so(Java_sun_awt_X11GraphicsEnvironment_initDisplay+0x24)
[0xa1b0e7a4]
#8 [0xae560b8b]
#9 [0xae55aa7b]
#10 [0xae55aa7b]
#11 [0xae558157]
#12
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/client/libjvm.so
[0xb31ab8ec]
#13
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/client/libjvm.so
[0xb329a378]
#14
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/client/libjvm.so
[0xb31ab71f]
#15
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/client/libjvm.so(JVM_DoPrivileged+0x2db)
[0xb3203ebb]
#16
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/libjava.so(Java_java_security_AccessController_doPrivileged__Ljava_security_PrivilegedAction_2+0x3d)
[0xb379e2cd]
#17 [0xae56043b]
#18 [0xae55a9a4]
#19 [0xae558157]

Do you have any idea what went wrong? It looks like the Java
JRE does not support 24 bit screen depth?

Thanks,
Stephan

Re: Locking assertion failure.

Thomas Lee — Mon, 21 Apr 2008 07:28:01 -0400

"Stephan " <sfabel@gmx.net> wrote in message
<ftkihm$5p$1@fred.mathworks.com>...
> Hi group,
>
> whenever I try to start MATLAB 2006a (7.2.0.294) under
> Linux, I get the above error. This only happens when I try
> to start it running in 24 bit resolution.
>
> Here's the complete backtrace:
> #0 /usr/lib/libxcb-xlib.so.0 [0xb5c60767]
> #1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_unlock+0x31)
[0xb5c608b1]
> #2 /usr/lib/libX11.so.6(_XReply+0xfd) [0xb5f2b1bd]
> #3
>
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/xawt/libmawt.so
> [0xa1b2826a]
> #4
>
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/xawt/libmawt.so
> [0xa1b0e352]
> #5
>
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/xawt/libmawt.so
> [0xa1b0e599]
> #6
>
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/xawt/libmawt.so(Java_sun_awt_X11GraphicsEnvironment_initDisplay+0x24)
> [0xa1b0e7a4]
> #7 [0xae560b8b]
> #8 [0xae55aa7b]
> #9 [0xae55aa7b]
> #10 [0xae558157]
> #11
>
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/client/libjvm.so
> [0xb31ab8ec]
> #12
>
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/client/libjvm.so
> [0xb329a378]
> #13
>
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/client/libjvm.so
> [0xb31ab71f]
> #14
>
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/client/libjvm.so(JVM_DoPrivileged+0x2db)
> [0xb3203ebb]
> #15
>
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/libjava.so(Java_java_security_AccessController_doPrivileged__Ljava_security_PrivilegedAction_2+0x3d)
> [0xb379e2cd]
> #16 [0xae56043b]
> #17 [0xae55a9a4]
> #18 [0xae558157]
> #19
>
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/client/libjvm.so
> [0xb31ab8ec]
> Locking assertion failure. Backtrace:
> #0 /usr/lib/libxcb-xlib.so.0 [0xb5c60767]
> #1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_lock+0x2e) [0xb5c6081e]
> #2 /usr/lib/libX11.so.6 [0xb5f2a518]
> #3 /usr/lib/libX11.so.6(XGetVisualInfo+0x26) [0xb5f210a6]
> #4
>
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/xawt/libmawt.so
> [0xa1b0d227]
> #5
>
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/xawt/libmawt.so
> [0xa1b0d4b8]
> #6
>
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/xawt/libmawt.so
> [0xa1b0e6e0]
> #7
>
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/xawt/libmawt.so(Java_sun_awt_X11GraphicsEnvironment_initDisplay+0x24)
> [0xa1b0e7a4]
> #8 [0xae560b8b]
> #9 [0xae55aa7b]
> #10 [0xae55aa7b]
> #11 [0xae558157]
> #12
>
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/client/libjvm.so
> [0xb31ab8ec]
> #13
>
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/client/libjvm.so
> [0xb329a378]
> #14
>
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/client/libjvm.so
> [0xb31ab71f]
> #15
>
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/client/libjvm.so(JVM_DoPrivileged+0x2db)
> [0xb3203ebb]
> #16
>
/home/stephan/matlab2006/sys/java/jre/glnx86/jre1.5.0/lib/i386/libjava.so(Java_java_security_AccessController_doPrivileged__Ljava_security_PrivilegedAction_2+0x3d)
> [0xb379e2cd]
> #17 [0xae56043b]
> #18 [0xae55a9a4]
> #19 [0xae558157]
>
> Do you have any idea what went wrong? It looks like the Java
> JRE does not support 24 bit screen depth?
>
> Thanks,
> Stephan

I have a similar crash like you. Using Matlab 2008a, though.

#0 /usr/lib/libxcb-xlib.so.0 [0xb5499767]
#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_unlock+0x31) [0xb54998b1]
#2 /usr/lib/libX11.so.6(_XReply+0xfd) [0xb575e1bd]
#3
/usr/local/matlab/sys/java/jre/glnx86/jre1.6.0/lib/i386/xawt/libmawt.so
[0xae93a2be]
#4
/usr/local/matlab/sys/java/jre/glnx86/jre1.6.0/lib/i386/xawt/libmawt.so
[0xae918ed7]
#5
/usr/local/matlab/sys/java/jre/glnx86/jre1.6.0/lib/i386/xawt/libmawt.so
[0xae919188]
#6
/usr/local/matlab/sys/java/jre/glnx86/jre1.6.0/lib/i386/xawt/libmawt.so(Java_sun_awt_X11GraphicsEnvironment_initDisplay+0x2f)
[0xae91948f]
#7 [0xafaf368e]
#8 [0xafaebe9d]
#9 [0xafaebe9d]
#10 [0xafae9207]
#11
/usr/local/matlab/sys/java/jre/glnx86/jre1.6.0/lib/i386/client/libjvm.so
[0x6209a4d]
#12
/usr/local/matlab/sys/java/jre/glnx86/jre1.6.0/lib/i386/client/libjvm.so
[0x6305bc8]
#13
/usr/local/matlab/sys/java/jre/glnx86/jre1.6.0/lib/i386/client/libjvm.so
[0x62098e0]
#14
/usr/local/matlab/sys/java/jre/glnx86/jre1.6.0/lib/i386/client/libjvm.so(JVM_DoPrivileged+0x34b)
[0x625f77b]
#15
/usr/local/matlab/sys/java/jre/glnx86/jre1.6.0/lib/i386/libjava.so(Java_java_security_AccessController_doPrivileged__Ljava_security_PrivilegedAction_2+0x3d)
[0xb1b9196d]
#16 [0xafaf368e]
#17 [0xafaebd37]
#18 [0xafae9207]
#19
/usr/local/matlab/sys/java/jre/glnx86/jre1.6.0/lib/i386/client/libjvm.so
[0x6209a4d]
Locking assertion failure. Backtrace:
#0 /usr/lib/libxcb-xlib.so.0 [0xb5499767]
#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_lock+0x2e) [0xb549981e]
#2 /usr/lib/libX11.so.6 [0xb575d518]
#3 /usr/lib/libX11.so.6(XGetVisualInfo+0x26) [0xb57540a6]
#4
/usr/local/matlab/sys/java/jre/glnx86/jre1.6.0/lib/i386/xawt/libmawt.so
[0xae918189]
#5
/usr/local/matlab/sys/java/jre/glnx86/jre1.6.0/lib/i386/xawt/libmawt.so
[0xae9183d5]
#6
/usr/local/matlab/sys/java/jre/glnx86/jre1.6.0/lib/i386/xawt/libmawt.so
[0xae919239]
#7
/usr/local/matlab/sys/java/jre/glnx86/jre1.6.0/lib/i386/xawt/libmawt.so(Java_sun_awt_X11GraphicsEnvironment_initDisplay+0x2f)
[0xae91948f]
#8 [0xafaf368e]
#9 [0xafaebe9d]
#10 [0xafaebe9d]
#11 [0xafae9207]
#12
/usr/local/matlab/sys/java/jre/glnx86/jre1.6.0/lib/i386/client/libjvm.so
[0x6209a4d]
#13
/usr/local/matlab/sys/java/jre/glnx86/jre1.6.0/lib/i386/client/libjvm.so
[0x6305bc8]
#14
/usr/local/matlab/sys/java/jre/glnx86/jre1.6.0/lib/i386/client/libjvm.so
[0x62098e0]
#15
/usr/local/matlab/sys/java/jre/glnx86/jre1.6.0/lib/i386/client/libjvm.so(JVM_DoPrivileged+0x34b)
[0x625f77b]
#16
/usr/local/matlab/sys/java/jre/glnx86/jre1.6.0/lib/i386/libjava.so(Java_java_security_AccessController_doPrivileged__Ljava_security_PrivilegedAction_2+0x3d)
[0xb1b9196d]
#17 [0xafaf368e]
#18 [0xafaebd37]
#19 [0xafae9207]

Re: Locking assertion failure.

Jeff — Sat, 26 Apr 2008 05:40:04 -0400

I have the same problem. Another forum:

https://bugs.launchpad.net/xorg-server/+bug/185311

gave several things to try, one of which partially fixed the
problem.

on Ubuntu 8.04, the following fixed the problem with v2007a,
but did not fix the problem with v2008a

export MATLAB_JAVA=/usr/lib/jvm/java-6-sun-1.6.0.06/jre

I am still trying to figure out why this isn't working with
v2008a

Hope this helps

Re: Locking assertion failure.

Sebastian Jentschke — Mon, 19 May 2008 18:19:01 -0400

Thanks it worked excellent, in my case even for Matlab 2008a!

Re: Locking assertion failure.

Matteo — Wed, 18 Jun 2008 17:35:03 -0400

"Jeff " <wweagleflyer@yahoo.com> wrote in message
<fuuf7k$t72$1@fred.mathworks.com>...
> I have the same problem. Another forum:
>
> https://bugs.launchpad.net/xorg-server/+bug/185311
>
> gave several things to try, one of which partially fixed the
> problem.
>
> on Ubuntu 8.04, the following fixed the problem with v2007a,
> but did not fix the problem with v2008a
>
> export MATLAB_JAVA=/usr/lib/jvm/java-6-sun-1.6.0.06/jre
>
> I am still trying to figure out why this isn't working with
> v2008a
>
> Hope this helps

Hello people,

This did not help me. I have openSUSE 11 with MATLAB 2007a.
This fix prevents the error at MATLAB start, but then I
still don't see any title, legend or axis on MATLAB's plots,
furthermore I get this error when I try to ratate a figure:

java.lang.NullPointerException
at
com.mathworks.jmi.bean.MatlabBeanInterface.addCallback(MatlabBeanInterface.java:680)
at
com.mathworks.jmi.bean.MatlabCallbackInterface.addCallback(MatlabCallbackInterface.java:128)

Any other suggestion? Thanks

maTTeo

Re: Locking assertion failure.

Seamus — Thu, 14 Aug 2008 15:14:02 -0400

the solution:
export MATLAB_JAVA=/usr/lib/jvm/java-6-sun-1.6.0.06/jre/

worked for me in matlab r2007b on kubuntu 8.04,

thanks

Re: Locking assertion failure.

Robert Comstock — Thu, 18 Sep 2008 15:08:03 -0400

"Matteo " <voto_100.delete.this@hotmail.com> wrote in message <g3bh07$m0j$1@fred.mathworks.com>...
> "Jeff " <wweagleflyer@yahoo.com> wrote in message
> <fuuf7k$t72$1@fred.mathworks.com>...
> > I have the same problem. Another forum:
> >
> > https://bugs.launchpad.net/xorg-server/+bug/185311
> >
> > gave several things to try, one of which partially fixed the
> > problem.
> >
> > on Ubuntu 8.04, the following fixed the problem with v2007a,
> > but did not fix the problem with v2008a
> >
> > export MATLAB_JAVA=/usr/lib/jvm/java-6-sun-1.6.0.06/jre
> >
> > I am still trying to figure out why this isn't working with
> > v2008a
> >
> > Hope this helps
>
> Hello people,
>
> This did not help me. I have openSUSE 11 with MATLAB 2007a.
> This fix prevents the error at MATLAB start, but then I
> still don't see any title, legend or axis on MATLAB's plots,
> furthermore I get this error when I try to ratate a figure:
>
> java.lang.NullPointerException
> at
> com.mathworks.jmi.bean.MatlabBeanInterface.addCallback(MatlabBeanInterface.java:680)
> at
> com.mathworks.jmi.bean.MatlabCallbackInterface.addCallback(MatlabCallbackInterface.java:128)
>
> Any other suggestion? Thanks
>
> maTTeo

To fix the non-display title for me I did
export AWT_TOOLKIT="MToolkit"

Rob

Re: Locking assertion failure.

wang w* — Wed, 19 Aug 2009 18:00:23 -0400

Actually, you just need to figure out the version of your jvm and make some modification of the version number in the command below:

export MATLAB_JAVA=/usr/lib/jvm/java-6-sun-1.6.0.06/jre

that's just OK!
At least it works on my R2008.

"Jeff " <wweagleflyer@yahoo.com> wrote in message <fuuf7k$t72$1@fred.mathworks.com>...
> I have the same problem. Another forum:
>
> https://bugs.launchpad.net/xorg-server/+bug/185311
>
> gave several things to try, one of which partially fixed the
> problem.
>
> on Ubuntu 8.04, the following fixed the problem with v2007a,
> but did not fix the problem with v2008a
>
> export MATLAB_JAVA=/usr/lib/jvm/java-6-sun-1.6.0.06/jre
>
> I am still trying to figure out why this isn't working with
> v2008a
>
> Hope this helps