Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761120AbZJMT0P (ORCPT ); Tue, 13 Oct 2009 15:26:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761096AbZJMT0O (ORCPT ); Tue, 13 Oct 2009 15:26:14 -0400 Received: from outbound-mail-09.bluehost.com ([69.89.17.209]:50521 "HELO outbound-mail-09.bluehost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1761079AbZJMT0O convert rfc822-to-8bit (ORCPT ); Tue, 13 Oct 2009 15:26:14 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=virtuousgeek.org; h=Received:Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References:X-Mailer:Mime-Version:Content-Type:Content-Transfer-Encoding:X-Identified-User; b=BIcPyETpaGECDmCWpLmAmWVYq8gfOimEiDMg9BNFFHwe2/HGesAlXd8T+aUDWCIO5jvz1zR/K0iUW6mPPwzYtCMpowltTsxRNmDgf4pPtIzqRdTUdXNPo+salTca+SSf; Date: Tue, 13 Oct 2009 12:25:15 -0700 From: Jesse Barnes To: Fabio Comolli Cc: "Carlos R. Mafra" , Theodore Tso , Eric Anholt , linux-kernel@vger.kernel.org, Keith Packard Subject: Re: 2.6.32 regression (bisected): Video tearing/glitching with T400 laptops Message-ID: <20091013122515.5074d7f3@jbarnes-g45> In-Reply-To: References: <20091008103620.5e5aae66@jbarnes-g45> <20091010204106.GA8251@mit.edu> <20091012095438.1e82b54f@jbarnes-g45> <20091012184651.GA4603@Pilar.aei.mpg.de> <20091012120510.16bd1194@jbarnes-g45> X-Mailer: Claws Mail 3.7.2 (GTK+ 2.17.5; i486-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT X-Identified-User: {10642:box514.bluehost.com:virtuous:virtuousgeek.org} {sentby:smtp auth 75.111.28.251 authed with jbarnes@virtuousgeek.org} Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3114 Lines: 82 The patch below should have only affected GM45 chipsets, what chipset do you have (lspci -vvv -s 02.0 should tell you). Sounds like this patch was good enough for both you and Carlos, but not sufficient for Ted or Keith. What resolution are you running? Jesse On Tue, 13 Oct 2009 21:19:32 +0200 Fabio Comolli wrote: > Hi Jesse. > Sorry to jump in but I also had issues with -32rc (i915 chip) and this > patch seems to have resolved all problems. > > I don't know how to describe in english what happened to my desktop > but probably "glitches" and "tearings" could be the correct words. > Also sometimes the screen went blank and needed to switch to terminal > console and back to return to the normal X screen. > > Nothing in the logs, neither messages nor Xorg.0.log. > > Regards, > Fabio > > > > On Mon, Oct 12, 2009 at 9:05 PM, Jesse Barnes > wrote: > > On Mon, 12 Oct 2009 20:46:51 +0200 > > "Carlos R. Mafra" wrote: > > > >> On Mon 12.Oct'09 at  9:54:38 -0700, Jesse Barnes wrote: > >> > > > >> > > Nope, unfortunately, it's not helping on my T400 laptop.  I'm > >> > > still getting huge amounts of glitching and tearing with this > >> > > patch applied against -rc3. > >> > > > >> > > What I'm using for now to fix up my system is this patch. > >> > > > >> > > >> > How about this one?  I have one more idea to try out if this > >> > doesn't work (hacking on it now). > >> > >> I was also experiencing something very similar to Theodore's bug > >> report and, at least for me, the patch below fixed the issue (the > >> previous one also had no effect). > > > > Cool, good to hear.  Hopefully Ted and Keith will confirm too. > > > > -- > > Jesse Barnes, Intel Open Source Technology Center > > > > diff --git a/drivers/gpu/drm/i915/intel_display.c > > b/drivers/gpu/drm/i915/intel_display.c index 7a5fb79..1451945 100644 > > --- a/drivers/gpu/drm/i915/intel_display.c > > +++ b/drivers/gpu/drm/i915/intel_display.c > > @@ -1047,7 +1047,7 @@ static void g4x_enable_fbc(struct drm_crtc > > *crtc, unsigned long interval) dev_priv->cfb_fence = > > obj_priv->fence_reg; dev_priv->cfb_plane = intel_crtc->plane; > > > > -       dpfc_ctl = plane | DPFC_SR_EN | DPFC_CTL_LIMIT_1X; > > +       dpfc_ctl = plane | DPFC_CTL_LIMIT_1X; > >        if (obj_priv->tiling_mode != I915_TILING_NONE) { > >                dpfc_ctl |= DPFC_CTL_FENCE_EN | dev_priv->cfb_fence; > >                I915_WRITE(DPFC_CHICKEN, DPFC_HT_MODIFY); > > -- > > 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/ > > > -- 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/