Comment 7 for bug 574157

Gentoo bug https://bugs.gentoo.org/296514 explicitly details this ddd problem, and provides further evidence that the X server is to blame, and that the patch included in the fd.o bug solves this.

Note: There may be some issues with the way X.org was patched to solve this. Apparently the patch in the fd.o bug works, but the actual checkin to X.org sources was different and broke other things; see the comments in the Gentoo bug.