From: Maciej Rutecki <maciej.rutecki@gmail.com>
To: Ivan Bulatovic <combuster@gmx.com>
Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
jbarnes@virtuousgeek.org, eric@anholt.net
Subject: Re: i915: 2.6.36-rc2 wrong resolution on gdm start
Date: Sun, 29 Aug 2010 14:59:57 +0200 [thread overview]
Message-ID: <201008291459.58165.maciej.rutecki@gmail.com> (raw)
In-Reply-To: <1282611655.2177.19.camel@localhost.localdomain>
On wtorek, 24 sierpnia 2010 o 03:00:55 Ivan Bulatovic wrote:
> While in init3, resolution is native, KMS works fine, no problems at
> all. As soon as gdm starts it seems that TV1 output is recognized as
> connected even if it isn't so resolution on VGA output is degraded from
> native 1280x1024 to 1024x768 on startup.
>
> I've disabled LVDS output with video=LVDS-1:d because the cable looses
> connection in certain lid positions.
>
> 2.6.36-rc1 didn't have this issue, 2.6.36-rc2 did so I've bisected and
> it came down to this commit:
>
> 9d0498a2bf7455159b317f19531a3e5db2ecc9c4 is the first bad commit
> commit 9d0498a2bf7455159b317f19531a3e5db2ecc9c4
> Author: Jesse Barnes <jbarnes@virtuousgeek.org>
> Date: Wed Aug 18 13:20:54 2010 -0700
>
> drm/i915: wait for actual vblank, not just 20ms
>
> Waiting for a hard coded 20ms isn't always enough to make sure a vblank
> period has actually occurred, so add code to make sure we really have
> passed through a vblank period (or that the pipe is off when disabling).
>
> This prevents problems with mode setting and link training, and seems to
> fix a bug like https://bugs.freedesktop.org/show_bug.cgi?id=29278, but
> on an HP 8440p instead. Hopefully also fixes
> https://bugs.freedesktop.org/show_bug.cgi?id=29141.
>
> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
> Signed-off-by: Eric Anholt <eric@anholt.net>
>
> :040000 040000 9941813d0f0bc4e141a87696d34f1d1b9087711b
>
> 2e407ad1d03b60f0e5b020313a8a63bd176b4005 M drivers
>
> I'm sending you dmesg, xorg and xrandr logs as attachements. GM965 on
> DELL Vostro 1310 is in question. Thanks,
>
> Ivan
I created a Bugzilla entry at
https://bugzilla.kernel.org/show_bug.cgi?id=17301
for your bug report, please add your address to the CC list in there, thanks!
--
Maciej Rutecki
http://www.maciek.unixy.pl
WARNING: multiple messages have this Message-ID (diff)
From: Maciej Rutecki <maciej.rutecki@gmail.com>
To: Ivan Bulatovic <combuster@gmx.com>
Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org
Subject: Re: i915: 2.6.36-rc2 wrong resolution on gdm start
Date: Sun, 29 Aug 2010 14:59:57 +0200 [thread overview]
Message-ID: <201008291459.58165.maciej.rutecki@gmail.com> (raw)
In-Reply-To: <1282611655.2177.19.camel@localhost.localdomain>
On wtorek, 24 sierpnia 2010 o 03:00:55 Ivan Bulatovic wrote:
> While in init3, resolution is native, KMS works fine, no problems at
> all. As soon as gdm starts it seems that TV1 output is recognized as
> connected even if it isn't so resolution on VGA output is degraded from
> native 1280x1024 to 1024x768 on startup.
>
> I've disabled LVDS output with video=LVDS-1:d because the cable looses
> connection in certain lid positions.
>
> 2.6.36-rc1 didn't have this issue, 2.6.36-rc2 did so I've bisected and
> it came down to this commit:
>
> 9d0498a2bf7455159b317f19531a3e5db2ecc9c4 is the first bad commit
> commit 9d0498a2bf7455159b317f19531a3e5db2ecc9c4
> Author: Jesse Barnes <jbarnes@virtuousgeek.org>
> Date: Wed Aug 18 13:20:54 2010 -0700
>
> drm/i915: wait for actual vblank, not just 20ms
>
> Waiting for a hard coded 20ms isn't always enough to make sure a vblank
> period has actually occurred, so add code to make sure we really have
> passed through a vblank period (or that the pipe is off when disabling).
>
> This prevents problems with mode setting and link training, and seems to
> fix a bug like https://bugs.freedesktop.org/show_bug.cgi?id=29278, but
> on an HP 8440p instead. Hopefully also fixes
> https://bugs.freedesktop.org/show_bug.cgi?id=29141.
>
> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
> Signed-off-by: Eric Anholt <eric@anholt.net>
>
> :040000 040000 9941813d0f0bc4e141a87696d34f1d1b9087711b
>
> 2e407ad1d03b60f0e5b020313a8a63bd176b4005 M drivers
>
> I'm sending you dmesg, xorg and xrandr logs as attachements. GM965 on
> DELL Vostro 1310 is in question. Thanks,
>
> Ivan
I created a Bugzilla entry at
https://bugzilla.kernel.org/show_bug.cgi?id=17301
for your bug report, please add your address to the CC list in there, thanks!
--
Maciej Rutecki
http://www.maciek.unixy.pl
next prev parent reply other threads:[~2010-08-29 13:00 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-24 1:00 i915: 2.6.36-rc2 wrong resolution on gdm start Ivan Bulatovic
2010-08-24 7:49 ` Chris Wilson
2010-08-24 7:49 ` Chris Wilson
2010-08-24 8:35 ` Ivan Bulatovic
2010-08-24 8:50 ` Chris Wilson
2010-08-24 8:50 ` Chris Wilson
2010-08-24 9:12 ` Ivan Bulatovic
2010-08-24 9:21 ` [PATCH] drm/i915/tv: Flush register writes before sleeping Chris Wilson
2010-08-24 9:21 ` Chris Wilson
2010-08-24 11:03 ` Ivan Bulatovic
2010-08-24 15:11 ` [PATCH] drm/i915/tv: After disabling the pipe, use wait_for_vblank_off() Chris Wilson
2010-08-24 21:08 ` Ivan Bulatovic
2010-08-24 21:52 ` Chris Wilson
2010-08-24 23:00 ` Ivan Bulatovic
2010-08-24 23:04 ` Ivan Bulatovic
2010-08-24 23:05 ` Jesse Barnes
2010-08-24 23:06 ` Ivan Bulatovic
2010-08-25 8:15 ` Sitsofe Wheeler
2010-08-25 9:17 ` Ivan Bulatovic
2010-08-25 9:31 ` Ivan Bulatovic
2010-08-25 9:51 ` Kan-Ru Chen
2010-08-29 11:29 ` i915: 2.6.36-rc2 wrong resolution on gdm start Pekka Enberg
2010-08-29 13:37 ` Sitsofe Wheeler
2010-08-24 8:54 ` Pekka Enberg
2010-08-24 8:54 ` Pekka Enberg
2010-08-29 12:59 ` Maciej Rutecki [this message]
2010-08-29 12:59 ` Maciej Rutecki
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