From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zhang Rui Subject: Re: ACPI crash on lid close - SMP race? Date: Tue, 11 Nov 2008 09:27:14 +0800 Message-ID: <1226366834.15014.60.camel@rzhang-dt> References: <20081110161105.GA2041@srcf.ucam.org> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from mga14.intel.com ([143.182.124.37]:38767 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751340AbYKKB3y (ORCPT ); Mon, 10 Nov 2008 20:29:54 -0500 In-Reply-To: <20081110161105.GA2041@srcf.ucam.org> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Matthew Garrett Cc: "linux-acpi@vger.kernel.org" , "linux-kernel@vger.kernel.org" well, there is a bug report for this problem: http://bugzilla.kernel.org/show_bug.cgi?id=11259 and there are some bug reports for a similar problem (system crashes on lid close if _DOS=1, but on a UP platform). http://bugzilla.kernel.org/show_bug.cgi?id=6001#c49 but unfortunately we haven't made any progress in this issue. :( thanks, rui On Tue, 2008-11-11 at 00:11 +0800, Matthew Garrett wrote: > If the _DOS flag on my HP 2510p is set to 0 (ie, signal OS when screen > notification is requested, don't change automatically) then it'll crash > on random lid open/closes. The trace generally makes little sense and > depends on the kernel version and phase of the moon. I'd ignored this as > firmware brokenness up until lately, but since having _DOS set to 0 is > the only way to get a notification when the display switch key is > pressed on this machine I'd be interested in fixing it properly. > > Unfortunately, I've got no real idea what on earth is going on. The only > clue I've found so far is that booting with maxcpus=1 leaves it working > perfectly. What parts of the ACPI stack could be triggering this? >