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=-1.0 required=3.0 tests=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 E3D62C04ABB for ; Tue, 11 Sep 2018 08:17:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A6CFF20854 for ; Tue, 11 Sep 2018 08:17:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A6CFF20854 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org 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 S1726622AbeIKNPt convert rfc822-to-8bit (ORCPT ); Tue, 11 Sep 2018 09:15:49 -0400 Received: from mail-oi0-f65.google.com ([209.85.218.65]:33343 "EHLO mail-oi0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726517AbeIKNPs (ORCPT ); Tue, 11 Sep 2018 09:15:48 -0400 Received: by mail-oi0-f65.google.com with SMTP id 8-v6so45566108oip.0 for ; Tue, 11 Sep 2018 01:17:39 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=Ws+QIEGqXzlEF/7dLDwjleiu8qt6NKh/5eMaOjXVp9A=; b=hhoT1Z0dE3bz1nV+zA6fT+p34FqJEzTybp4RGID9amdoMhDmLGb27ryd9Ku7YDU/sd LO7K6HoY9Wu9wSzOCsSGNHJjAa2H2phHGznhtZsG7oeR29jb51tbimMIIaiOJ2ffosoN 4ltvlhJEJIISJxZClTWWmN0D2jvKhboIIJx2vGBeMPDKglXbcybr+ebmVhnuDJ8qm34g gbB5fIwj+XxG+hubtWo7RxyQzAphVgroxs4Ttnsi9kZNBOKy/ZQJMqVa/UHnPFzNOyt+ XIaUFxA3N2fPIpIeRn4tTxoAcQqmRUqxHFDSD4OGt8T5Bb951qd9Rj1XL1nH27rjeQei 7EBw== X-Gm-Message-State: APzg51AAZCn9qJ8J3LtgSdL61RAxko/qI5m3aRwbVQcTL62uSLeSbhZ+ wFtQkk7UmSWRXA1rA01SEfa7e20udMV/A4te1QQ= X-Google-Smtp-Source: ANB0VdbHXs7/ZMZsNUX7j8chP2o94WLBdKisXgxfEB8EXtFZdN9xnq7xmXFNSN1JEI7NwbNJG6vsrLOzWaMbzxNObK4= X-Received: by 2002:aca:190d:: with SMTP id l13-v6mr26648638oii.216.1536653858811; Tue, 11 Sep 2018 01:17:38 -0700 (PDT) MIME-Version: 1.0 References: <20222492.cP35YpYkb6@merkaba> In-Reply-To: <20222492.cP35YpYkb6@merkaba> From: "Rafael J. Wysocki" Date: Tue, 11 Sep 2018 10:17:27 +0200 Message-ID: Subject: Re: [REGRESSION 4.19-rc2] sometimes hangs with black screen when resuming from suspend or hibernation (was: Re: Linux 4.19-rc2) To: martin@lichtvoll.de Cc: Linus Torvalds , "Rafael J. Wysocki" , Linux Kernel Mailing List Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, 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. Thanks, Rafael