From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nikolaus Rath Subject: Re: Help with debugging intermittent crash on resume from hibernation Date: Fri, 17 Apr 2015 20:15:19 -0700 Message-ID: <5531CC47.9000008@rath.org> References: <8761a3s1vq.fsf@vostro.rath.org> <87vbhwwdzz.fsf@vostro.rath.org> <1426823821.3150.4.camel@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from ebox.rath.org ([23.92.25.96]:43425 "EHLO ebox.rath.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751703AbbDRDPc (ORCPT ); Fri, 17 Apr 2015 23:15:32 -0400 In-Reply-To: <1426823821.3150.4.camel@gmail.com> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Mike Galbraith Cc: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, "Rafael J. Wysocki" , Pavel Machek On 03/19/2015 08:57 PM, Mike Galbraith wrote: > (+CC) >=20 > On Thu, 2015-03-19 at 20:21 -0700, Nikolaus Rath wrote: >> On Mar 13 2015, Nikolaus Rath wrote: >>> Hello, >>> >>> In about one out of 10 resumes from hibernation, my system resets a= fter >>> the hibernation image has been loaded. I am hibernating using >>> >>> # echo platform > /sys/power/disk >>> # echo disk > /sys/power/state >>> >>> When testing hibernation using >>> >>> # echo core > /sys/power/pm_test >>> # echo platform > /sys/power/disk >>> # echo disk > /sys/power/state >>> >>> I was not able to produce the same failure. >>> >>> I then tried attaching a serial console and booted with >>> console=3DttyS0,115200n8 no_console_suspend. For the failed attempt= , the >>> last messages before the reset are: >> [...] >> >> I reproduced the same problem with 4.0.0-rc3. Is there anything I ca= n do >> to get more debugging information? I also found that blacklisting the nouveau module seems to dramatically reduce the occurence of this problem (it only happened once since I blacklisted the module which is probably about ~30 resumes ago). Is there anything I can do to help debug this issue? Best, -Nikolaus --=20 GPG encrypted emails preferred. Key id: 0xD113FCAC3C4E599F =46ingerprint: ED31 791B 2C5C 1613 AF38 8B8A D113 FCAC 3C4E 599F =C2=BBTime flies like an arrow, fruit flies like a Banana.= =C2=AB -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html