Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935081AbZLGNom (ORCPT ); Mon, 7 Dec 2009 08:44:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S934963AbZLGNol (ORCPT ); Mon, 7 Dec 2009 08:44:41 -0500 Received: from mail-pw0-f42.google.com ([209.85.160.42]:34010 "EHLO mail-pw0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934786AbZLGNok convert rfc822-to-8bit (ORCPT ); Mon, 7 Dec 2009 08:44:40 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=iLE2N2auwQShsupnTZlSlt1xa5H8AyqTz08SA+8QZjh4j+W0e3OaBhgSBJ5jr/XDK3 EJCNliQ+Wu5vX27j+rNBO1S3/AB57JKJInb2GxgCUnhTuDxpBaRFV5t9MSdzyC/dFmj8 79K7p6ETjD3lIPEc876dhPPD5Lp+yKCdlDdpU= MIME-Version: 1.0 In-Reply-To: References: <4B1A6F78.8010408@myrealbox.com> <50CA8D92EC%linux@youmustbejoking.demon.co.uk> <20091206173222.4c2d5aaa@jbarnes-piketon> Date: Mon, 7 Dec 2009 20:38:39 +0700 Message-ID: Subject: Re: 2.6.31 -> 2.6.32 Sound and video regressions From: Emmanuel Benisty To: Jesse Barnes Cc: Darren Salt , linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org, luto@myrealbox.com, eric@anholt.net Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2482 Lines: 54 On Mon, Dec 7, 2009 at 10:52 AM, Emmanuel Benisty wrote: > On Mon, Dec 7, 2009 at 8:32 AM, Jesse Barnes wrote: >> On Sat, 05 Dec 2009 23:44:55 +0000 >> Darren Salt wrote: >> >>> I demand that Andy Lutomirski may or may not have written... >>> >>> > Emmanuel Benisty wrote: >>> [snip] >>> >> I just wanted to report 2 regressions I am having now with 2.6.32. >>> >> Video >>> >> Screen is flickering/glitching like crazy in X. It happens whether >>> >> randomly or when conky is refreshed, when the mouse cursor moves >>> >> and like hell when a page is loading in the browser. Not so easy to >>> >> describe this issue. >>> [snip] >>> >>> > That sounds like FIFO underruns, which (I think) were introduced >>> > when self-refresh was enabled but should have been fixed. I >>> > personally have no clue how to fix them, but if you told the Intel >>> > people what kind of chip you have (lspci output), they can probably >>> > fix it. >>> >>> It also sounds like what I'm seeing on my EeePC 901. It only happens >>> after resume, which makes STR a little less than useful; the display >>> will, sooner or later, show a single colour (which is, presumably, >>> the result of a display engine hang, as described in the comment >>> immediately before intel_calculate_wm) and, seemingly, be stuck like >>> that until power-off or reboot. >>> >>> Whether it *is* the same problem, I couldn't say. >>> >>> Needless to say, this problem goes away if I disable KMS. >> >> Arg, there are a few reports of this now, but I haven't been able to >> reproduce it.  I'll try harder...  (FYI the upstream >> bugs.freedesktop.org # for it is 24314). > > It *seems* that we are facing two different issues here (I don't even > use S2R and the problem is there since the very first second I start > X). Anyway, I have bisected the problem on my box, it turns out to be > this one: > > drm/i915: Fix render reclock availability detection > > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=181a5336d6cc836f05507410d66988c483ad0154 > So, I have reverted this commit and rebuilt 2.6.32. It completely solved the issue described in my first post. -- 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/