From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jani Nikula <jani.nikula@linux.intel.com>
Subject: Re: i915 DVI resolution regression (3.13.7+)
Date: Tue, 08 Apr 2014 10:14:04 +0300
Message-ID: <878urg9ttv.fsf@intel.com>
References: <CAMVG2sti6EMQXw5xyNp-wkq0nGz4zVgz1p7AO48Kb1_zYk8K0w@mail.gmail.com>
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To: Daniel J Blueman <daniel@quora.org>, Ville =?utf-8?B?U3lyasOkbMOk?= <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>, intel-gfx@lists.freedesktop.org, Linux Kernel <linux-kernel@vger.kernel.org>
List-Id: intel-gfx@lists.freedesktop.org

On Tue, 08 Apr 2014, Daniel J Blueman <daniel@quora.org> wrote:
> Ville et al,
>
> It looks like commit e3ea8fa6beaf55fee64bf816f3b8a80ad733b2c2 (or
> another commit in 3.13.7) broke modes which require DVI-D dual-link,
> eg 2560x1440 with my panel.
>
> I don't see these modelines in 3.13.7 or later (eg 3.14):
>
> [     5.582] (II) intel(0): Modeline "2560x1440"x60.0  312.25  2560
> 2752 3024 3488  1440 1443 1448 1493 -hsync +vsync (89.5 kHz eP)
> [     5.582] (II) intel(0): Modeline "2560x1440"x60.0  312.25  2560
> 2752 3024 3488  1440 1443 1448 1493 -hsync +vsync (89.5 kHz eP)
> [     5.582] (II) intel(0): Modeline "1920x1200"x59.9  193.25  1920
> 2056 2256 2592  1200 1203 1209 1245 -hsync +vsync (74.6 kHz e)
>
> My monitor is a Dell U2713HM; mobo uses an H87 chipset with i5-4670.

By allowing those modes we regressed setups which were not capable of
displaying them. So you've got an HDMI->DVI converter?

https://bugzilla.kernel.org/show_bug.cgi?id=72961


-- 
Jani Nikula, Intel Open Source Technology Center