... xcb_xlib_unlock: assertion ... failed — matlab jvm error 
Few days back I have installed Red Hat Fedora 8. I have put Matlab on there as well. When I tried to start Matlab using this command:
matlab -nodesktop -nosplash
the following error occurred.
MATLAB: xcb_xlib.c:50: xcb_xlib_unlock: Assertion `c->xlib.lock' failed.
This error is due to a Java Runtime Environment (JVM) bug. This bug has already been addressed by Sun developers, however Fedora 8 ships with an older JVM that still suffers from it. The best way to fix the problem is to update your JVM to the most current version using your favourite package manager. If for whatever reason that is not an option, you can still run Matlab by disabling its JVM support using the -nojvm switch like this:
matlab -nodesktop -nosplash -nojvm
or simply:
matlab -nojvm
Using either of the above commands from shell, Matlab starts without a glitch.
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January 29, 2007
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