https://bugs.freedesktop.org/show_bug.cgi?id=60236
--- Comment #12 from Paul Heldens pheldens@ziggo.nl --- still has the problem with that patch
noticed this in dmesg:
radeon 0000:01:00.0: DMA copy src buffer too small (4295180288 18382848) [drm:radeon_cs_ib_chunk] *ERROR* Invalid command stream ! radeon 0000:01:00.0: DMA copy src buffer too small (1032192 1024000) [drm:radeon_cs_ib_chunk] *ERROR* Invalid command stream !