From: Sitsofe Wheeler <sitsofe@yahoo.com>
To: Pekka Enberg <penberg@kernel.org>
Cc: Sven Joachim <svenjoac@gmx.de>, Hugh Dickins <hughd@google.com>,
Chris Wilson <chris@chris-wilson.co.uk>,
torvalds@linux-foundation.org, linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Jesse Barnes <jbarnes@virtuousgeek.org>
Subject: Re: [PATCH] Revert "drm/i915: fix vblank wait test condition"
Date: Sun, 5 Sep 2010 10:37:59 +0100 [thread overview]
Message-ID: <20100905093758.GB23589@sucs.org> (raw)
In-Reply-To: <4C834DB5.3070702@kernel.org>
On Sun, Sep 05, 2010 at 10:58:45AM +0300, Pekka Enberg wrote:
>
> I haven't heard of this problem. Is it reported on LKML? Is it a
> regression from 2.6.35?
Yes I did report it on the LKML (the initial report is
http://lkml.org/lkml/2010/8/23/432 ) but I've being trying to track
other reports mentioning similar symptoms too (e.g. I mentioned the
previous link to you in http://lkml.org/lkml/2010/8/29/52 ) but it seems
like they might different. The Intel guys spent a good while doing
investigations and having me try patches which is what led to a half fix
( http://marc.info/?l=linux-kernel&m=128267471015593&w=2 ) but there are
still situations which show problems (e.g. after suspend to ram). I've
also created a bug on the xorg bugzilla (
http://bugs.freedesktop.org/show_bug.cgi?id=29857 ) which has more
debugging information. The problem is there are so many symptoms but
worse, the triggers are weird/marginal so it's hard to tell if it has
been fixed.
Yes it is a regression from 2.6.35 see
http://lkml.org/lkml/2010/8/24/132 where I bisected it down to commit
9d0498a2bf7455159b317f19531a3e5db2ecc9c4 .
--
Sitsofe | http://sucs.org/~sits/
next prev parent reply other threads:[~2010-09-05 9:38 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-04 8:17 Pekka Enberg
2010-09-04 9:21 ` Chris Wilson
2010-09-04 16:29 ` Pekka Enberg
2010-09-04 19:54 ` Hugh Dickins
2010-09-04 20:42 ` Sven Joachim
2010-09-04 22:44 ` Sitsofe Wheeler
2010-09-05 7:58 ` Pekka Enberg
2010-09-05 9:37 ` Sitsofe Wheeler [this message]
2010-09-05 8:26 ` Fabio Comolli
2010-09-05 9:14 ` Sitsofe Wheeler
2010-09-05 10:13 ` Fabio Comolli
2010-09-05 10:21 ` Fabio Comolli
2010-09-05 12:27 ` Sitsofe Wheeler
2010-09-05 17:41 ` Fabio Comolli
2010-09-05 16:11 ` Pekka Enberg
2010-09-05 16:23 ` Chris Wilson
2010-09-05 16:40 ` Pekka Enberg
2010-09-05 17:21 ` Chris Wilson
2010-09-05 17:26 ` Pekka Enberg
2010-09-05 17:53 ` Jesse Barnes
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