12 February, 2008
Java Applets in Ubuntu
I was having trouble viewing Java applets in Ubuntu (hardy) earlier:
java_vm: xcb_xlib.c:82: xcb_xlib_unlock: Assertion `c->xlib.lock’ failed.
Could not read ack from child process
Plugin: Java VM process has died.
plugin: java process died due to signal 6
The solution is to set the following environment variable in the shell beforehand.
export LIBXCB_ALLOW_SLOPPY_LOCK=1
This applies to appletviewer too.
Update: this is another possible solution (I haven't tested it).

2 months, 2 weeks ago
Thank you so much. Got same problem with OpenSuse 10.3, Firefox 2.0.0.12 & JDK 1.6 and now it works fine !