From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932220AbcIEGUW (ORCPT ); Mon, 5 Sep 2016 02:20:22 -0400 Received: from mout.gmx.net ([212.227.15.19]:54624 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752686AbcIEGUV (ORCPT ); Mon, 5 Sep 2016 02:20:21 -0400 From: Sven Joachim To: =?iso-8859-1?Q?J=E9r=F4me?= Glisse Cc: Christian =?iso-8859-1?Q?K=F6nig?= , Alex Deucher , dri-devel@lists.freedesktop.org, lkml Subject: Hibernation broken since commit 274ad65c9d02 ("drm/radeon: hard reset r600 and newer GPU when hibernating.") Date: Mon, 05 Sep 2016 08:20:06 +0200 Message-ID: <87a8fmq355.fsf@turtle.gmx.de> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Provags-ID: V03:K0:pT6SnSTmjaNuY0rEz+hp5Stkj4u4VGMUeRSgUFk2C0zDc2jQXJG v9LOHTy9p2OX0Alr1LP/oc3RQvC1gP5Zlbguu+Uc0mi/p75Q0Cj1Y/BRAl3pEa4t1VYBFp5 OHoJ8BOq2VQcbUPHTC6hNal76V3b49v0bD7BJDlWT6hJc3go/xL2dJHPS1gVQeunL+RzxBQ 4EYDfIxBR2GmRQq74ymhA== X-UI-Out-Filterresults: notjunk:1;V01:K0:+voKexFM/vU=:OoTf9pkZUH/401dkv2krIV 44ylpi8/X/rwf/QZY7jtxboOHu8xwi+obNX/JsEie36AbZX8LtNptqxdRW2YCN9zw2B2UgoBM pslOXPPfTewI4LyY8Q3WgAmPa6F89iMYnE7279Hq3E/HFj8Cqii6uqdbCQZ9M+gmDqv5kFeYA Zbn6cFc1+oiSq7g5n2oShMmqZf7YNtZnsKznrSfJ219HVoWaq1apLzjnCFeIu9e8YhW+iO7t1 CKViG4ufGat/GtRyTLHaW1WESLqARuwrp8XP6V9N/kZUKzdfQPRsiZtr8QbCyuwlSO1f+BQw+ CyjNZ9w2ZI4+Ba6lCg0xzYwV67osoC85QGgNI9mTpdsFHat7E/EbfHifdFKMwUDlZUR6JHxRc pO0nsgkcihXnra2IiO8rnqU3PKM/qcu5l5oKJNxSTsfDcP7RagMyZ9KJXlJy5JV86cDgzVxmr exLE5ixyqGsafqial58G233RYDLkX+087wae66Ho5ThVOBUfch/1BNWGkjxqM7HHb/BLeiYJe qYfnqgMOgJ9aRf37y/k5T3g+8W6fho1FCzIMEkXYjLRJQhnzTk4zXxrzVKSZ4BPIYA7td6Oxw MkVRWrHWtC0kwA88dtj04rT0A9UbL87aHZp/NpVjJlnZ0b4Ggjh83WnpTLoACp06MDJJMbkKb tRzKHTWFPvB4lauEMltBnmE+qzVmUXcsSctqBwCzJfOJd4kt9V5D3/RqBQmAUtxYIqO/SyKyq Spujie6We07nP7g/OOAhRM+w8BzpX0/q1QNE8hqiTb7Suk6WQbG7hSez4k8tbxe3YyELQbrnO ciKHhX8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Recently I got myself a new laptop with the following integrated GPU: 00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Mullins [Radeon R3 Graphics] (rev 40) I found that hibernation is broken in Linux 4.7+ (it works in Linux 4.6) and bisected it to commit 274ad65c9d02 ("drm/radeon: hard reset r600 and newer GPU when hibernating."). This has already been reported three months ago, but for a much older GPU, see the thread starting at https://lists.freedesktop.org/archives/dri-devel/2016-June/110050.html. The symptoms are exactly the same as described by Boris Petkov in that thread: after "systemctl hibernate" the screen goes blank, but the machine remains powered on and needs to be power-cycled. Any suggestions would be welcome. Cheers, Sven