On Fri, Dec 7, 2012 at 9:44 PM, Heinz Diehl <htd at fritha.org> wrote: > On 07.12.2012, Daniel Vetter wrote: >> > I think I can reliably reproduce the hang on my machine now. I have to >> > try some HD-videos on Youtube while writing a big file with dd. The >> > hang often occurs withing max. 5 min. > >> That sounds pretty awesome: Just to check, is this already with rc6 >> disable? Also, which gpu chip? > > This is with latest 3.7-git and i915.i915_enable_rc6=0. > Attached is a logfile/dmesg after booting with debug options on which > hopefully shows you the gpu chip. > >> Sure, always glad to help excellent bug reporters along. My usual >> kernel bisect howto is: >> http://www.reactivated.net/weblog/archives/2006/01/using-git-bisect-to-find-buggy-kernel-patches/ >> It seems to server rather well thus far. ilk with rc6 disabled, and the two hangs you've attached both die on the MI_FLUSH in between a 3D primitive and a 2D blit, like all the other non-rc6 hangs we've seen thus far that indicate that 3.7 regressed. This A looks _very_ good. I'm adding lists again so that people are updated and can check whether I've analyzed the error_states correctly. For reference I've uploaded your dmesg and error_states at http://people.freedesktop.org/~danvet/stuff/gpu-hang.tar.bz2 > Thanks, I've read it and think that will be pretty easy (technically). > Am I right to download Linus' tree first, and so compile an 3.7.0-rc1, > and if I can reproduce the bug with it, it should be a little bit of a > shorter way to get the offending patch bisected? > >> Good luck with the exams! > > Thanks! :-) > >> Yeah, something in 3.7 seems to have blown up - we have a few reports >> all claiming that 3.6 is solid, while 3.7 is not :( > > I'll try my very best to detect the offending patch. So stay tuned ;-) Yeah, this would be very good information to move forward with this bug. Thanks a lot for your hard work in helping with reproducing this bug. Yours, Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch
