Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758254AbaDIHHe (ORCPT ); Wed, 9 Apr 2014 03:07:34 -0400 Received: from mga01.intel.com ([192.55.52.88]:46459 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758191AbaDIHH3 (ORCPT ); Wed, 9 Apr 2014 03:07:29 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,824,1389772800"; d="scan'208";a="517276532" From: Jani Nikula To: Dave Airlie , Daniel J Blueman Cc: Daniel Vetter , "intel-gfx\@lists.freedesktop.org" , Linux Kernel Subject: Re: [Intel-gfx] i915 DVI resolution regression (3.13.7+) In-Reply-To: Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo References: <878urg9ttv.fsf@intel.com> User-Agent: Notmuch/0.17+162~g34940eaa1d37 (http://notmuchmail.org) Emacs/23.3.1 (x86_64-pc-linux-gnu) Date: Wed, 09 Apr 2014 10:08:04 +0300 Message-ID: <87lhvf7zfv.fsf@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 09 Apr 2014, Dave Airlie wrote: > On Wed, Apr 9, 2014 at 4:07 PM, Daniel J Blueman wrote: >> On 9 April 2014 11:41, Dave Airlie wrote: >>> On Tue, Apr 8, 2014 at 5:32 PM, Daniel J Blueman wrote: >>>> On 8 April 2014 15:14, Jani Nikula wrote: >>>>> On Tue, 08 Apr 2014, Daniel J Blueman 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/