No more segfaults, but it still has a rejected CS: [129870.605179] [drm:r100_cs_track_check] *ERROR* [drm] Buffer too small for color buffer 0 (need 8387584 have 524288) ! [129870.605186] [drm:r100_cs_track_check] *ERROR* [drm] color buffer 0 (16382 2 0 256) [129870.605189] [drm:radeon_cs_ioctl] *ERROR* Invalid command stream !