Messages in this thread | | | Date | Wed, 12 Jan 2011 15:06:40 -0800 | From | Jesse Barnes <> | Subject | Re: [git pull] drm intel only fixes |
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On Wed, 12 Jan 2011 14:31:33 -0800 Linus Torvalds <torvalds@linux-foundation.org> wrote:
> On Wed, Jan 12, 2011 at 2:22 PM, Jesse Barnes <jbarnes@virtuousgeek.org> wrote: > > > > Ah, ok. So it could be our internal FDI link is underrunning; it goes > > between the CPU and PCH and carries display bits. > > I'm not sure it's an underrun or anything like that: the corruption is > long-term in the non-video case. So I take back the "looks like memory > bandwidth problems", because it really looks more like a corrupted > blit operation there.
Ah ok if it's long running then yeah it's more likely to be a rendering issue. It could also be the FDI link getting its timings messed up though, and consistently delivering the wrong bits; that could show up in the same place on the screen each time, or it might move in a pattern across the screen (usually from top to bottom).
> Will do. I'll have to reboot to the broken kernel (my bisection ended > in a non-broken case)
Great, thanks.
-- Jesse Barnes, Intel Open Source Technology Center -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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