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 D35D0C1B0F2 for ; Wed, 20 Jun 2018 09:11:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 96D5720652 for ; Wed, 20 Jun 2018 09:11:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 96D5720652 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.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 S1754824AbeFTJLW (ORCPT ); Wed, 20 Jun 2018 05:11:22 -0400 Received: from mx2.suse.de ([195.135.220.15]:60852 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752308AbeFTJLS (ORCPT ); Wed, 20 Jun 2018 05:11:18 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (charybdis-ext-too.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 17B80AC1E; Wed, 20 Jun 2018 09:11:17 +0000 (UTC) Date: Wed, 20 Jun 2018 11:11:17 +0200 Message-ID: From: Takashi Iwai To: "Rafael J. Wysocki" Cc: Noah Davis , ACPI Devel Maling List , Linux Kernel Mailing List Subject: Re: [REGRESSION] 4.17 failed to probe ACPI PnP In-Reply-To: References: User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI/1.14.6 (Maruoka) FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.8 Emacs/25.3 (x86_64-suse-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 20 Jun 2018 09:28:40 +0200, Rafael J. Wysocki wrote: > > On Wed, Jun 20, 2018 at 8:37 AM, Takashi Iwai wrote: > > On Tue, 19 Jun 2018 10:38:50 +0200, > > Takashi Iwai wrote: > >> > >> On Tue, 19 Jun 2018 10:28:42 +0200, > >> Rafael J. Wysocki wrote: > >> > > >> > On Tue, Jun 19, 2018 at 8:12 AM, Takashi Iwai wrote: > >> > > Hi, > >> > > > >> > > there seems a regression regarding the probe of ACPI PnP devices. > >> > > The detailed logs are found in openSUSE bugzilla: > >> > > https://bugzilla.opensuse.org/show_bug.cgi?id=1098074 > >> > > >> > But that's on this particular machine, not in general, right? > >> > > >> > At least I don't see this on any of the systems in my office. > >> > >> Yes, it looks so. 4.17 and later works on my several machines, too. > >> > >> > > >> > > In short, since 4.17, the laptop keyboard is lost on ASUS K501UW. > >> > > Comparing the kernel messages and other logs indicates that the > >> > > complete lost of ACPI PnP devices: > >> > > > >> > > On 4.16: > >> > > [ 0.390244] pnp: PnP ACPI: found 9 devices > >> > > > >> > > On 4.17: > >> > > [ 0.263266] pnp: PnP ACPI: found 0 devices > >> > > > >> > > ... and this leads to the failure of PS/2 keyboard detection due to > >> > > the missing PNP030b entry as a result. > >> > > > >> > > Any hints for debugging this are appreciated. > >> > > >> > It looks like this may be related to the ACPICA changes that went in > >> > during the 4.17 cycle. > >> > > >> > I would try 4.18-rc1 as there is an ACPICA fix in it that may be > >> > related to this in theory. If that doesn't help, I'd focus on the > >> > ACPICA changes. > >> > >> OK, Noah, could you test later the kernel in OBS Kernel:HEAD repo? > >> Now 4.18-rc1 kernel is being built there, and hopefully will finish > >> soon later. > > > > 4.18-rc1 was confirmed to work, so something had fixed it. > > Please check this commit > > 5088814a6e93 ACPICA: AML parser: attempt to continue loading table after error > > None of the other ACPICA commits that have gone in since 4.17 should > affect the behavior at hand. OK, I'm building a test kernel with this backport. Stay tuned. thanks, Takashi