On Tuesday 04 December 2012 13:35:22 Heinz Diehl wrote:
Btw: which kernel is known to be the "last good one"?
As mentioned in the linked bug [1], I bisected it to:
commit 504c7267a1e84b157cbd7e9c1b805e1bc0c2c846 Author: Chris Wilson chris@chris-wilson.co.uk Date: Thu Aug 23 13:12:52 2012 +0100
drm/i915: Use cpu relocations if the object is in the GTT but not mappable
(you need to disable rc6 on ilk to not hit another issue which seems much easier to hit)
Ilk? If this stands for "Ironlake": I'm on Sandybridge.
...
Bisecting will be a pain without being able to reproduce the hang reliably.
Atm we're trying to come up with ways to dump more debug information, >but with no clue whatsoever what's going on that's slow-going.
Is there anything at the moment I can do to help you to get a grip on this problem? My machine is a Core i5-420M laptop with 4GB RAM (Asus U45-JC).
i5-420M is not SB, but ILK. i5-2xxx is SB. I have a i5-460M myself. i915.i915_enable_rc6=0 worked for me, if it does not work for you, then you probably hit another bug.
Peter