Jim Driscoll's Blog

Patching Java to work on Ubuntu Hardy Heron

Java's been broken on Hardy Heron for a while, but I just upgraded to Alpha 5 and found out for myself :-(

The symptoms of the bug are a crash with an error message that contains:
xcb_xlib_unlock: Assertion `c->xlib.lock' failed.

At Dave Shucks blog, I found a patch that works:


LIB_TO_PATCH=libmawt.so
for f in `find /opt -name "$LIB_TO_PATCH"`
do
echo "Patching library $f"
sudo sed -i 's/XINERAMA/FAKEEXTN/g' "$f"
done


Where "/opt" is a directory where you keep your JDKs.

The fix is widely available on the internet, but I thought it was worth restating here.

Comments

• This bug has been around for a while. They did something to patch it in gutsy, but regressed it in hardy. There's a simpler workaround in this bug report:

  https://bugs.launchpad.net/ubuntu/+source/libxcb/+bug/87947

  export LIBXCB_ALLOW_SLOPPY_LOCK=1

  Posted by: kellyc2702 on February 28, 2008 at 01:12 AM

• Thanks! That's certainly a fix that'll make people less nervous ;-)

  Posted by: driscoll on February 28, 2008 at 09:06 AM

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