Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755718AbcKESFF (ORCPT ); Sat, 5 Nov 2016 14:05:05 -0400 Received: from out2-smtp.messagingengine.com ([66.111.4.26]:51988 "EHLO out2-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754380AbcKESFC (ORCPT ); Sat, 5 Nov 2016 14:05:02 -0400 X-ME-Sender: X-Sasl-enc: te4NUXxfTRnKprvbTlY3ZVr7vMD2/1qQgtagKY4RZUBW 1478369100 Date: Sat, 5 Nov 2016 16:04:58 -0200 From: Henrique de Moraes Holschuh To: Pavel Machek Cc: "Pandruvada, Srinivas" , "linux-kernel@vger.kernel.org" , "Zhang, Rui" , "linux-pm@vger.kernel.org" , "platform-driver-x86@vger.kernel.org" , "rjw@rjwysocki.net" , "viresh.kumar@linaro.org" , "ibm-acpi-devel@lists.sourceforge.net" , "ibm-acpi@hmh.eng.br" , "linux-acpi@vger.kernel.org" Subject: Re: v4.8-rc1: thinkpad x60: running at low frequency even during kernel build Message-ID: <20161105180458.GB17290@khazad-dum.debian.net> References: <20161104083849.GA32688@amd> <20161104085830.GA4089@amd> <1478268311.26953.17.camel@intel.com> <20161104204439.GA2581@amd> <20161104221600.GA7007@amd> <1478301649.7947.3.camel@intel.com> <20161105133719.GA3933@amd> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20161105133719.GA3933@amd> X-GPG-Fingerprint1: 4096R/0x0BD9E81139CB4807: C467 A717 507B BAFE D3C1 6092 0BD9 E811 39CB 4807 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 Content-Length: 1006 Lines: 23 On Sat, 05 Nov 2016, Pavel Machek wrote: > [ 825.759661] thinkpad_acpi: THERMAL EMERGENCY: a sensor reports something is extremely hot! > [ 825.761935] thinkpad_acpi: temperatures (Celsius): 101 49 N/A 78 33 N/A 33 N/A 47 50 N/A N/A N/A N/A N/A N/A Oh boy, that must be the second time in a decade that I see that codepath triggering. It is the second-level alert that the ThinkPad is about to catch fire. It should have logged a "is too hot!" first-level alert earlier, but this depends on the EC and not the driver. Maybe the temperature raised too fast. In Windows, the system would attempt to hibernate or shutdown. I would be quite happy to have thinkpad-acpi trigger such behavior as well, patches (or guidance) are welcome ;-) Anyway, if that temperature goes about 1~2?C higher, the EC should cut power to your motherboard. Apparently, the built-in thermal protection clock modulation on the Intel processor is somehow saving your box from that forced power-off. -- Henrique Holschuh