On Fri, Mar 16, 2012 at 11:01 PM, Keith Packard keithp@keithp.com wrote:
<#part sign=pgpmime> On Fri, 16 Mar 2012 16:47:46 +0000, Dave Airlie airlied@gmail.com wrote:
The hibernate issue is known and I've been hoping someone from Intel would run with debugging it, they have a big enough team that I don't feel I can expend the personal time to look into it.
Yeah, I've been chatting with a couple of intel folks; we should have a test patch ready shortly, but we haven't been able to reproduce anything like this...
Maybe Keith can push someone or maybe I just refuse pull requests until one with a fix appears.
From what I've seen, this is a problem only on Ironlake machines, which makes me afraid of some weird GTT flushing issue, given the adventures we had with VT-d on that hardware where we idle the gpu before any GTT updates. I wonder what would happen if we idled the GPU before any GTT updates even when VT-d wasn't running...
We've had reports on 965GM in Fedora, maybe davej has the specific bug.
Dave.