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Message-Id: <8u3s8d$jcg467@orsmga001.jf.intel.com> Date: Tue, 24 Aug 2010 09:16:50 +0100 From: Chris Wilson <chris@...is-wilson.co.uk> To: Sitsofe Wheeler <sitsofe@...oo.com> Cc: LKML <linux-kernel@...r.kernel.org>, dri-devel@...ts.freedesktop.org Subject: Re: [REGRESSION, i915]: Periodic stalls with 2.6.36-rc2 On Tue, 24 Aug 2010 08:57:41 +0100, Sitsofe Wheeler <sitsofe@...oo.com> wrote: > The stalls became a bit better with the patch but there were still very > small pauses but the tearing with more recent X bits is definitely still > there. Additionally videos in totem would play as a tiny one pixel high > row about a quarter of the screen across at the top left of the screen. > It also seems that X has started having trouble refreshing itself so > sometimes new windows are invisible (especially with compiz). Ok, I'm a little happier that the hangcheck could be just another symptom of the problem... I think it is safe to assume that the bug is in i915, so restricting the bisect to just drm seems plausible: git bisect start drivers/gpu/drm git bisect good 2.6.36-rc1 git bisect bad 2.6.36-rc2 And yes, it does apppear that the false detection rate for TV has changed. The suspicion is that the change to intel_wait_for_vblank() is actually causing issues here. -- Chris Wilson, Intel Open Source Technology Centre -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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