From: Sitsofe Wheeler <sitsofe@yahoo.com>
To: Sven Joachim <svenjoac@gmx.de>
Cc: Hugh Dickins <hughd@google.com>,
Pekka Enberg <penberg@kernel.org>,
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: Sat, 4 Sep 2010 23:44:53 +0100 [thread overview]
Message-ID: <20100904224453.GA31664@sucs.org> (raw)
In-Reply-To: <87vd6ls0jd.fsf@turtle.gmx.de>
On Sat, Sep 04, 2010 at 10:42:46PM +0200, Sven Joachim wrote:
> On 2010-09-04 21:54 +0200, Hugh Dickins wrote:
>
> > On Sat, 4 Sep 2010, Pekka Enberg wrote:
> >> On Sat, 4 Sep 2010 11:17:14 +0300, Pekka Enberg <penberg@kernel.org> wrote:
> >> >> This reverts commit 9559fcdbff4f93d29af04478bbc48294519424f5. The commit causes
> >> >> wrong screen resolution on some i915 machines such as MacBook which is a
> >> >> regression from 2.6.35. The issue has been reported multiple times but no fix
> >> >> has emerged:
> >>
> >> On Sat, Sep 4, 2010 at 12:21 PM, Chris Wilson <chris@chris-wilson.co.uk> wrote:
> >> > NAK. You can't simply hide one bug by introducing a much bigger one.
> >>
> >> Dude, it's a nasty regression from 2.6.35. What exactly are you NAK'ing here?
> >>
> >> > As you have an affected machine, find which wait_for_vblank() needs to be
> >> > replaced with a msleep(20|50).
> >>
> >> The attached patch fixes things here. I'm not a drm developer so I
> >> don't know if it makes technical sense.
> >
> > Many thanks to you, Pekka: I also don't know if it makes technical sense,
> > but it solves the same issue for me, so I can at last use 2.6.36-rc on
> > this laptop.
>
> Helps for me as well, but I cannot judge whether it makes technical
> sense either. Thanks, Pekka!
Sadly this doesn't help my EeePC 900 with an i915 when it is booted with
a battery inside or after doing a suspend to ram (running
modetest/xrandr in these situations says VGA is connected when there
isn't even a cable attached).
--
Sitsofe | http://sucs.org/~sits/
next prev parent reply other threads:[~2010-09-04 22:45 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-04 8:17 [PATCH] Revert "drm/i915: fix vblank wait test condition" 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 [this message]
2010-09-05 7:58 ` Pekka Enberg
2010-09-05 9:37 ` Sitsofe Wheeler
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20100904224453.GA31664@sucs.org \
--to=sitsofe@yahoo.com \
--cc=akpm@linux-foundation.org \
--cc=chris@chris-wilson.co.uk \
--cc=hughd@google.com \
--cc=jbarnes@virtuousgeek.org \
--cc=linux-kernel@vger.kernel.org \
--cc=penberg@kernel.org \
--cc=svenjoac@gmx.de \
--cc=torvalds@linux-foundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox