From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jani Nikula <jani.nikula@linux.intel.com>
Subject: Re: brix pro + dell UP3214Q,   3840x2160 @ 60 Hz
Date: Tue, 04 Mar 2014 18:12:19 +0200
Message-ID: <87txbe7xjw.fsf@intel.com>
References: <5315EDCA.4080500@kenjo.org>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <intel-gfx-bounces@lists.freedesktop.org>
Received: from mga09.intel.com (mga09.intel.com [134.134.136.24])
	by gabe.freedesktop.org (Postfix) with ESMTP id 3A5B9FA3F0
	for <intel-gfx@lists.freedesktop.org>;
	Tue,  4 Mar 2014 08:17:12 -0800 (PST)
In-Reply-To: <5315EDCA.4080500@kenjo.org>
List-Unsubscribe: <http://lists.freedesktop.org/mailman/options/intel-gfx>,
	<mailto:intel-gfx-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <http://lists.freedesktop.org/archives/intel-gfx>
List-Post: <mailto:intel-gfx@lists.freedesktop.org>
List-Help: <mailto:intel-gfx-request@lists.freedesktop.org?subject=help>
List-Subscribe: <http://lists.freedesktop.org/mailman/listinfo/intel-gfx>,
	<mailto:intel-gfx-request@lists.freedesktop.org?subject=subscribe>
Sender: intel-gfx-bounces@lists.freedesktop.org
Errors-To: intel-gfx-bounces@lists.freedesktop.org
To: Kenneth Johansson <ken@kenjo.org>, intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org

On Tue, 04 Mar 2014, Kenneth Johansson <ken@kenjo.org> wrote:
> So I have a brix pro that is a i7 4700R with Intel Iris Pro Graphics 5200.
> and I 4k display from dell that can do 3840 x 2160  at 60 Hz (DP1.2)
>
> So both end should be ok. But when I try daily build of ubuntu as of 
> yesterday all I get is 3840 x 2160 at 30Hz. I really hope this is just 
> some software thing as 30Hz is not usable but the display is really 
> crisp so I relly relly dont want to have to return it.
>
> I also noticed that when I go to console mode something gets configured 
> wrong. I do get picture but the kernel manage to get the dimensions 
> wrong so several 3-4 lines of the console is below the bottom and can't 
> be seen.

Please try drm-intel-nightly branch of [1]. It has the code to enable
higher frequencies for DP 1.2:

commit 06ea66b6bb445043dc25a9626254d5c130093199
Author: Todd Previte <tprevite@gmail.com>
Date:   Mon Jan 20 10:19:39 2014 -0700

    drm/i915: Enable 5.4Ghz (HBR2) link rate for Displayport 1.2-capable devices

BR,
Jani.


[1] http://cgit.freedesktop.org/drm-intel/


-- 
Jani Nikula, Intel Open Source Technology Center