From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EB088C04ABB for ; Tue, 11 Sep 2018 10:17:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 998832088E for ; Tue, 11 Sep 2018 10:17:14 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 998832088E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lichtvoll.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727300AbeIKPPu convert rfc822-to-8bit (ORCPT ); Tue, 11 Sep 2018 11:15:50 -0400 Received: from mondschein.lichtvoll.de ([194.150.191.11]:60905 "EHLO mail.lichtvoll.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726554AbeIKPPu (ORCPT ); Tue, 11 Sep 2018 11:15:50 -0400 Authentication-Results: auth=pass smtp.auth=martin smtp.mailfrom=martin@lichtvoll.de Received: from 127.0.0.1 (localhost [127.0.0.1]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.lichtvoll.de (Postfix) with ESMTPSA id 9ECE73A8D1A; Tue, 11 Sep 2018 12:17:10 +0200 (CEST) From: Martin Steigerwald To: "Rafael J. Wysocki" Cc: Linus Torvalds , Linux Kernel Mailing List , Intel Gfx Mailing List , Thorsten Leemhuis Subject: Re: [REGRESSION 4.19-rc2] sometimes hangs with black screen when resuming from suspend or hibernation (was: Re: Linux 4.19-rc2) Date: Tue, 11 Sep 2018 12:17:05 +0200 Message-ID: <3346308.cXARZRajoW@merkaba> In-Reply-To: References: <20222492.cP35YpYkb6@merkaba> MIME-Version: 1.0 Content-Transfer-Encoding: 8BIT Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Cc´d Intel Gfx mailing list, in case somebody there knows something: Cc´d Thorsten for regression tracking… forgot initially. Can also open bug report at a later time but so far I cannot provide many details about the issue. Rafael J. Wysocki - 11.09.18, 10:17: > On Tue, Sep 11, 2018 at 10:01 AM Martin Steigerwald wrote: > > Hi. > > > > Linus Torvalds - 02.09.18, 23:45: > > > As usual, the rc2 release is pretty small. People are taking a > > > > With 4.19-rc2 this ThinkPad T520 with i5 Sandybrdige sometimes hangs > > with black screen when resuming from suspend or hibernation. With > > 4.18.1 it did not. Of course there have been userspace related > > updates that could be related. > > > > I currently have no time to dig into this and on this production > > laptop I generally do not do bisects between major kernel releases. > > So currently I only answer questions that do not require much time > > to answer. > > > > For now I switched back to 4.18. If that is stable – and thus likely > > no userspace component is related –, I go with 4.19-rc3 or whatever > > is most recent version to see if the issue has been fixed already. > > There were almost no general changes related to system-wide PM between > 4.18 and current, so I would suspect one of the device drivers or the > x86 core. It also may be something like CPU online/offline, however. I see. I wondered about intel-gfx driver already. Of course it could also be something else. I forgot to mention: The mouse pointer was visible, but the screen remained black. That may again point away from Intel gfx driver. There has been a MESA update in between in userspace. Currently running 4.18.7 to make sure it is no userspace issue. Thanks, -- Martin