From: Jani Nikula <jani.nikula@linux.intel.com>
To: Joseph Salisbury <joseph.salisbury@canonical.com>,
sonika.jindal@intel.com
Cc: David Airlie <airlied@linux.ie>,
Daniel Vetter <daniel.vetter@ffwll.ch>,
intel-gfx <intel-gfx@lists.freedesktop.org>,
LKML <linux-kernel@vger.kernel.org>,
dri-devel <dri-devel@lists.freedesktop.org>,
rodrigo.vivi@intel.com
Subject: Re: [4.4-rc1][Regression] drm/i915: Check live status before reading edid
Date: Mon, 29 Feb 2016 11:33:59 +0200 [thread overview]
Message-ID: <87lh63uago.fsf@intel.com> (raw)
In-Reply-To: <56CE22DB.6050108@canonical.com>
On Wed, 24 Feb 2016, Joseph Salisbury <joseph.salisbury@canonical.com> wrote:
> Hi Sonika,
>
> A kernel bug report was opened against Ubuntu [0]. After a kernel
> bisect, it was found that reverting the following commit resolved this bug:
>
> commit 237ed86c693d8a8e4db476976aeb30df4deac74b
> Author: Sonika Jindal <sonika.jindal@intel.com>
> Date: Tue Sep 15 09:44:20 2015 +0530
>
> drm/i915: Check live status before reading edid
>
>
>
> The regression was introduced as of v4.4-rc1.
>
> I was hoping to get your feedback, since you are the patch author. Do
> think increasing the number of tries in intel_hdmi_detect() is worth
> trying? Do you think gathering any additional data will help diagnose
> this issue, or would it be best to submit a revert request?
There are at least the following commits claiming to fix issues in the
above commit. Please make sure you have them.
BR,
Jani.
commit 8d409cb3e8a24196be7271defafd4638f3e0b514
Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Wed Feb 10 19:59:05 2016 +0200
drm/i915: Fix hpd live status bits for g4x
commit 3d8acd1f667b45c531401c8f0c2033072e32a05d
Author: Gary Wang <gary.c.wang@intel.com>
Date: Wed Dec 23 16:11:35 2015 +0800
drm/i915: increase the tries for HDMI hotplug live status checking
commit 97f9010af05c15e0b7e6b4ef6ff8cb0ebb7e7715
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Fri Dec 11 19:44:15 2015 +0100
drm/i915: mdelay(10) considered harmful
commit 0f5a9be15797f78c9a34e432f26c796165b6e49a
Author: Imre Deak <imre.deak@intel.com>
Date: Fri Nov 27 18:55:29 2015 +0200
drm/i915: take a power domain reference while checking the HDMI live status
--
Jani Nikula, Intel Open Source Technology Center
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next prev parent reply other threads:[~2016-02-29 9:33 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-24 21:38 [4.4-rc1][Regression] drm/i915: Check live status before reading edid Joseph Salisbury
2016-02-25 3:53 ` Jindal, Sonika
2016-02-25 18:41 ` Joseph Salisbury
2016-02-26 6:08 ` Jindal, Sonika
2016-02-29 9:33 ` Jani Nikula [this message]
2016-03-02 21:58 ` Joseph Salisbury
2016-03-28 18:39 ` Joseph Salisbury
2016-04-18 19:46 ` Joseph Salisbury
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