Comment 5 for bug 525273

Maarten: Is there any more information or help I can provide? Or any hardware I can donate? Unfortunately donating a $1500 Mac laptop isn't something I'm comfortable doing, but if someone could find a cheap (<= $450?) laptop with the same or similar NVAC chipset, I might be able to justify buying one for Ben to test on. If he thinks remote testing will do, I'd be happy to hang out in #nouveau on the weekend and help (unfortunately during the week isn't possible for me).

Ted: interesting... are you running a 64bit system? If so, does that mean TTM is trying to use > 32bit DMA? Perhaps something in the hardware doesn't support > 32bit DMA, and that fact isn't being detected properly.