From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tim Gardner <tim.gardner@canonical.com>
Subject: Re: Lenovo x120e resume regression in 3.15-rc1 bisected to
 'drm/crtc-helpers: fix dpms on logic'
Date: Fri, 02 May 2014 13:55:44 -0600
Message-ID: <5363F840.60304@canonical.com>
References: <5363CA91.7070203@canonical.com>
 <CADnq5_OeiqpDZoPcAccKJn9Tvzz-euNJou4LhZqNKOH64F+7dw@mail.gmail.com>
 <5363E455.2020500@canonical.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <kernel-team-bounces@lists.ubuntu.com>
In-Reply-To: <5363E455.2020500@canonical.com>
List-Unsubscribe: <https://lists.ubuntu.com/mailman/options/kernel-team>,
 <mailto:kernel-team-request@lists.ubuntu.com?subject=unsubscribe>
List-Archive: <https://lists.ubuntu.com/archives/kernel-team>
List-Post: <mailto:kernel-team@lists.ubuntu.com>
List-Help: <mailto:kernel-team-request@lists.ubuntu.com?subject=help>
List-Subscribe: <https://lists.ubuntu.com/mailman/listinfo/kernel-team>,
 <mailto:kernel-team-request@lists.ubuntu.com?subject=subscribe>
Errors-To: kernel-team-bounces@lists.ubuntu.com
Sender: kernel-team-bounces@lists.ubuntu.com
To: Alex Deucher <alexdeucher@gmail.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>, LKML <linux-kernel@vger.kernel.org>, Maling list - DRI developers <dri-devel@lists.freedesktop.org>, kernel-team <kernel-team@lists.ubuntu.com>, Dave Airlie <airlied@redhat.com>, Dan Carpenter <dan.carpenter@oracle.com>
List-Id: dri-devel@lists.freedesktop.org

On 05/02/2014 12:30 PM, Tim Gardner wrote:
> On 05/02/2014 11:21 AM, Alex Deucher wrote:
>> On Fri, May 2, 2014 at 12:40 PM, Tim Gardner <tim.gardner@canonical.com> wrote:
>>> I've bisected a resume regression on a Lenovo x120e to
>>> 177cf92de4aa97ec1435987e91696ed8b5023130 (drm/crtc-helpers: fix dpms on
>>> logic). Everything works fine with this patch reverted on top of
>>> 3.15-rc3. I realize it is correcting a coding error that has been in
>>> place since 3.11, but it is also causing this laptop to resume to a
>>> black screen wherein the platform appears to be locked up (no console,
>>> no network). See attached bisect log and lspci. The BIOS version is 1.15.
>>>
>>
>> Does the attached patch help?  I haven't had a chance to unwind all
>> the logic in the crtc helper code.
>>
>> Alex
>>
> 
> Nope, same symptom. Black screen on resume, no network, etc.
> 
> rtg
> 

linux-next tip (20140502) appears to have the same bug.

rtg
-- 
Tim Gardner tim.gardner@canonical.com