From: Jani Nikula <jani.nikula@linux.intel.com>
To: Dave Airlie <airlied@gmail.com>, Daniel J Blueman <daniel@quora.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>,
"intel-gfx@lists.freedesktop.org"
<intel-gfx@lists.freedesktop.org>,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: i915 DVI resolution regression (3.13.7+)
Date: Wed, 09 Apr 2014 10:08:04 +0300 [thread overview]
Message-ID: <87lhvf7zfv.fsf@intel.com> (raw)
In-Reply-To: <CAPM=9tz+xo7vktTZ=8QB6rMGPnTXd485wbwaq_4Ao9fGEnh4hQ@mail.gmail.com>
On Wed, 09 Apr 2014, Dave Airlie <airlied@gmail.com> wrote:
> On Wed, Apr 9, 2014 at 4:07 PM, Daniel J Blueman <daniel@quora.org> wrote:
>> On 9 April 2014 11:41, Dave Airlie <airlied@gmail.com> wrote:
>>> On Tue, Apr 8, 2014 at 5:32 PM, Daniel J Blueman <daniel@quora.org> wrote:
>>>> On 8 April 2014 15:14, Jani Nikula <jani.nikula@linux.intel.com> wrote:
>>>>> 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
>>>>
>>>> I am using a dual-link DVI-D to DVI-D cable to this monitor, since I
>>>> previously couldn't get 2560x1440 via HDMI.
>>>
>>> Intel hw has dual-link DVI-D? I'm not sure I've ever seen that, is
>>> this SDVO device or plain DVI-D?
>>
>> It's the DVI-D connector on: https://www.asus.com/Motherboards/H87IPLUS/
>
> The link which says "
>
> Integrated Graphics Processor
> - Supports HDMI with max. resolution 4096 x 2304 @ 24 Hz
> - Supports DVI with max. resolution 1920 x 1200 @ 60 Hz
> - Supports RGB with max. resolution 1920 x 1200 @ 60 Hz
>
> I'm even wondering electrically how a HDMI->dual-link DVI adapter works.
The current assumption is that in the working case, they are really
operated in single-link, with a frequency beyond the single-link DVI
cable spec.
BR,
Jani.
>
> Dave.
--
Jani Nikula, Intel Open Source Technology Center
WARNING: multiple messages have this Message-ID (diff)
From: Jani Nikula <jani.nikula@linux.intel.com>
To: Dave Airlie <airlied@gmail.com>, Daniel J Blueman <daniel@quora.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>,
"intel-gfx\@lists.freedesktop.org"
<intel-gfx@lists.freedesktop.org>,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: [Intel-gfx] i915 DVI resolution regression (3.13.7+)
Date: Wed, 09 Apr 2014 10:08:04 +0300 [thread overview]
Message-ID: <87lhvf7zfv.fsf@intel.com> (raw)
In-Reply-To: <CAPM=9tz+xo7vktTZ=8QB6rMGPnTXd485wbwaq_4Ao9fGEnh4hQ@mail.gmail.com>
On Wed, 09 Apr 2014, Dave Airlie <airlied@gmail.com> wrote:
> On Wed, Apr 9, 2014 at 4:07 PM, Daniel J Blueman <daniel@quora.org> wrote:
>> On 9 April 2014 11:41, Dave Airlie <airlied@gmail.com> wrote:
>>> On Tue, Apr 8, 2014 at 5:32 PM, Daniel J Blueman <daniel@quora.org> wrote:
>>>> On 8 April 2014 15:14, Jani Nikula <jani.nikula@linux.intel.com> wrote:
>>>>> 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
>>>>
>>>> I am using a dual-link DVI-D to DVI-D cable to this monitor, since I
>>>> previously couldn't get 2560x1440 via HDMI.
>>>
>>> Intel hw has dual-link DVI-D? I'm not sure I've ever seen that, is
>>> this SDVO device or plain DVI-D?
>>
>> It's the DVI-D connector on: https://www.asus.com/Motherboards/H87IPLUS/
>
> The link which says "
>
> Integrated Graphics Processor
> - Supports HDMI with max. resolution 4096 x 2304 @ 24 Hz
> - Supports DVI with max. resolution 1920 x 1200 @ 60 Hz
> - Supports RGB with max. resolution 1920 x 1200 @ 60 Hz
>
> I'm even wondering electrically how a HDMI->dual-link DVI adapter works.
The current assumption is that in the working case, they are really
operated in single-link, with a frequency beyond the single-link DVI
cable spec.
BR,
Jani.
>
> Dave.
--
Jani Nikula, Intel Open Source Technology Center
next prev parent reply other threads:[~2014-04-09 7:07 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-08 5:50 i915 DVI resolution regression (3.13.7+) Daniel J Blueman
2014-04-08 5:50 ` Daniel J Blueman
2014-04-08 7:14 ` Jani Nikula
2014-04-08 7:14 ` [Intel-gfx] " Jani Nikula
2014-04-08 7:32 ` Daniel J Blueman
2014-04-08 7:32 ` [Intel-gfx] " Daniel J Blueman
2014-04-08 8:02 ` Daniel Vetter
2014-04-08 8:02 ` [Intel-gfx] " Daniel Vetter
2014-04-09 2:48 ` Daniel J Blueman
2014-04-09 2:48 ` [Intel-gfx] " Daniel J Blueman
2014-04-09 3:41 ` Dave Airlie
2014-04-09 3:41 ` [Intel-gfx] " Dave Airlie
2014-04-09 6:07 ` Daniel J Blueman
2014-04-09 6:07 ` [Intel-gfx] " Daniel J Blueman
2014-04-09 6:54 ` Dave Airlie
2014-04-09 6:54 ` [Intel-gfx] " Dave Airlie
2014-04-09 7:08 ` Jani Nikula [this message]
2014-04-09 7:08 ` Jani Nikula
2014-04-15 6:27 ` Daniel J Blueman
2014-04-15 6:27 ` [Intel-gfx] " Daniel J Blueman
2014-04-15 10:15 ` Ville Syrjälä
2014-04-15 10:15 ` [Intel-gfx] " Ville Syrjälä
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