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Patching Java to work on Ubuntu Hardy Heron

Posted by driscoll on February 25, 2008 at 10:04 AM PST

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.

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Comments

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

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