https://bugs.freedesktop.org/show_bug.cgi?id=47765
--- Comment #9 from Jerome Glisse glisse@freedesktop.org 2012-04-04 14:13:45 PDT --- Created attachment 59494 --> https://bugs.freedesktop.org/attachment.cgi?id=59494 Fix pixmap.height < 64 case
This should fix your issue (patch against ddx xf86-video-ati)