(In reply to comment #51) > Created attachment 76544 [details] [review] [review] > set non_disp tiling bit for cayman > > Good catch! I believe the attached patch should fix the issue. Since this bug is pretty much the same as previous one I had identified in comment 29 (pointing to bug 38173) and since the proposed patch is also pretty similar to 1 of the 2 patches needed to fix that identified bug, is it possible there is something missing that would look like the second patch that was needed? patch 1 from bug 38173 (similar to the one proposed with your attachment 76544 [details] [review]): http://cgit.freedesktop.org/mesa/mesa/commit/?id=5e1495b2d9311fa2b320766a1d299053904bd9c3 patch 2 from bug 38173 (possibly similar to what is missing to complete your proposed patch): http://cgit.freedesktop.org/mesa/mesa/commit/?id=acca690c259824636ef1ff684a10bd1caca4751f In other words, are we sure we are offsetting the non_disp variable correctly for Cayman? Because according to the second patch, the offset was different.