https://bugs.freedesktop.org/show_bug.cgi?id=62578
--- Comment #2 from Orion Poplawski orion@cora.nwra.com --- The problem is also present in mesa 9.0.3. With that I also get the following in dmesg:
Mar 20 13:51:28 aspen kernel: [162904.454217] [drm:r100_cs_track_check] *ERROR* [drm] No buffer for z buffer ! Mar 20 13:51:28 aspen kernel: [162904.454224] [drm:radeon_cs_ib_chunk] *ERROR* Invalid command stream !
But I don't seem to get that with 9.1.