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=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 07068C32792 for ; Mon, 30 Sep 2019 16:30:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DC20E21855 for ; Mon, 30 Sep 2019 16:30:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732296AbfI3QaH (ORCPT ); Mon, 30 Sep 2019 12:30:07 -0400 Received: from mga09.intel.com ([134.134.136.24]:28178 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732308AbfI3QaH (ORCPT ); Mon, 30 Sep 2019 12:30:07 -0400 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 30 Sep 2019 09:30:06 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,567,1559545200"; d="scan'208";a="204868102" Received: from lahna.fi.intel.com (HELO lahna) ([10.237.72.157]) by fmsmga001.fm.intel.com with SMTP; 30 Sep 2019 09:30:02 -0700 Received: by lahna (sSMTP sendmail emulation); Mon, 30 Sep 2019 19:30:01 +0300 Date: Mon, 30 Sep 2019 19:30:01 +0300 From: Mika Westerberg To: Karol Herbst Cc: Bjorn Helgaas , LKML , Lyude Paul , Linux PCI , dri-devel , nouveau , "Rafael J. Wysocki" , Linux PM Subject: Re: [RFC PATCH] pci: prevent putting pcie devices into lower device states on certain intel bridges Message-ID: <20190930163001.GX2714@lahna.fi.intel.com> References: <20190927144421.22608-1-kherbst@redhat.com> <20190927214252.GA65801@google.com> <20190930080534.GS2714@lahna.fi.intel.com> <20190930092934.GT2714@lahna.fi.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo User-Agent: Mutt/1.12.1 (2019-06-15) Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org On Mon, Sep 30, 2019 at 06:05:14PM +0200, Karol Herbst wrote: > still happens with your patch applied. The machine simply gets shut down. > > dmesg can be found here: > https://gist.githubusercontent.com/karolherbst/40eb091c7b7b33ef993525de660f1a3b/raw/2380e31f566e93e5ba7c87ef545420965d4c492c/gistfile1.txt Looking your dmesg: Sep 30 17:24:27 kernel: nouveau 0000:01:00.0: DRM: DCB version 4.1 Sep 30 17:24:27 kernel: nouveau 0000:01:00.0: DRM: MM: using COPY for buffer copies Sep 30 17:24:27 kernel: [drm] Initialized nouveau 1.3.1 20120801 for 0000:01:00.0 on minor 1 I would assume it runtime suspends here. Then it wakes up because of PCI access from userspace: Sep 30 17:24:42 kernel: pci_raw_set_power_state: 56 callbacks suppressed and for some reason it does not get resumed properly. There are also few warnings from ACPI that might be relevant: Sep 30 17:24:27 kernel: ACPI Warning: \_SB.PCI0.GFX0._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20190509/nsarguments-59) Sep 30 17:24:27 kernel: ACPI Warning: \_SB.PCI0.PEG0.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20190509/nsarguments-59) This seems to be Dell XPS 9560 which I think has been around some time already so I wonder why we only see issues now. Has it ever worked for you or maybe there is a regression that causes it to happen now?