https://bugs.freedesktop.org/show_bug.cgi?id=92269
--- Comment #6 from Daniel Scharrer daniel@constexpr.org --- Then this might be a duplicate of bug #92122.
There is a patch series on the ML waiting for review: http://patchwork.freedesktop.org/patch/61011/ http://patchwork.freedesktop.org/patch/61012/