From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752470AbbJBKT2 (ORCPT ); Fri, 2 Oct 2015 06:19:28 -0400 Received: from mga14.intel.com ([192.55.52.115]:57144 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750730AbbJBKT0 (ORCPT ); Fri, 2 Oct 2015 06:19:26 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.17,622,1437462000"; d="scan'208";a="782644061" Date: Fri, 2 Oct 2015 13:19:19 +0300 From: Mika Westerberg To: =?iso-8859-1?Q?Niccol=F2?= Belli Cc: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org Subject: Re: [Dell XPS 13 9343] Random kernel Oops at boot with "acpi=ht", disappearing with "acpi=off" Message-ID: <20151002101919.GZ1551@lahna.fi.intel.com> References: <16367d85-fe84-4792-819a-d50a508409ef@linuxsystems.it> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <16367d85-fe84-4792-819a-d50a508409ef@linuxsystems.it> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Oct 02, 2015 at 11:59:38AM +0200, Niccolò Belli wrote: > Hi, > This laptop suffers of random kernel hangs at boot: I tested kernel 4.1.8, > 4.2.1 and 4.3-rc3 and they are all affected. > Every time I turn on my laptop I have to boot several times to be able to > reach the sddm login because often I get hangs which prevent the system to > boot. Once booted I don't have any problem anymore, until the next boot. > > With "acpi=off" the system boots flawlessly, while with "acpi=ht" I still > get random hangs, so I guess the problem is in the ACPI table parsing code > itself, or perhaps the SMP code. > > I recompiled kernel 4.3-rc3 with CONFIG_ACPI_DEBUG=y and I attached full log > from a serial console, booting with "debug acpi.debug_level=0x2003" (warn, > error and tables debug enabled): > https://bugzilla.kernel.org/attachment.cgi?id=189041 > > Distro is Arch Linux. Please let me know if you need further logs. > > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=105251 Does it work any better if you blacklist the crashing module "snd_soc_rl6347a" (or set CONFIG_SND_SOC_RL6347A=n)?