From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754743Ab0IEJPB (ORCPT ); Sun, 5 Sep 2010 05:15:01 -0400 Received: from silver.sucs.swan.ac.uk ([137.44.10.1]:40489 "EHLO silver.sucs.swan.ac.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754659Ab0IEJPA (ORCPT ); Sun, 5 Sep 2010 05:15:00 -0400 Date: Sun, 5 Sep 2010 10:14:51 +0100 From: Sitsofe Wheeler To: Fabio Comolli Cc: Sven Joachim , Hugh Dickins , Pekka Enberg , Chris Wilson , torvalds@linux-foundation.org, linux-kernel@vger.kernel.org, Andrew Morton , Jesse Barnes Subject: Re: [PATCH] Revert "drm/i915: fix vblank wait test condition" Message-ID: <20100905091451.GA23589@sucs.org> References: <1283588234-2514-1-git-send-email-penberg@kernel.org> <89k83a$9hv9li@azsmga001.ch.intel.com> <87vd6ls0jd.fsf@turtle.gmx.de> <20100904224453.GA31664@sucs.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Sep 05, 2010 at 10:26:25AM +0200, Fabio Comolli wrote: > > Well, this is very strange. I also own an EeePC 900 (i915 of course) > and I don't have this problem at all, nor I need the patch. Actually I > run a plain 2.6.36-rc3 and it works perfectly. > > I use the latest userspace available, with xorg 1.9 and Intel video > driver v. 2.12 (Archlinux testing repositories). > > Which kernel / userspace are you using? OK that's interesting - are you seeing correct xrandr output after a suspend and resume too? I previously said that everything was working perfectly a few weeks ago (only correct inputs were reported, only one FIFO message in dmesg, no tearing on video, no cursor disappearing, screen size was correct when X started, running xrandr doesn't make the screen flash white etc) and added my tested-by line only to find out that there were cases where phantom inputs were still being reported ( http://marc.info/?l=linux-kernel&m=128272404206696&w=2 ). I'm using a 2.6.36-rc3 kernel (with the patch). I think userspace X is less relevant as I can reproduce the false VGA detection without X starting please see http://bugs.freedesktop.org/show_bug.cgi?id=29857 for more details). I've tested the 2.12 intel drivers which you can add via xorg-edgers (which I think was 1.8 but I'd have to check) and the 2.9 drivers which ship with Ubuntu 10.04 (which is xorg 1.7.6). The newer X userspace pieces show a nice speedup in things like desktop effects and textured video but if X doesn't run and inputs are being mis-detected then I don't think it is the root of the problem... I'm interested to know if it is just me seeing this issue. Did you even have a problem with 2.6.36-rc2? Do you have any debugging options (e.g. lock dep checking) on that would slow your kernel down and stop the issue from ocurring? -- Sitsofe | http://sucs.org/~sits/