From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755415Ab2GDQuK (ORCPT ); Wed, 4 Jul 2012 12:50:10 -0400 Received: from out3-smtp.messagingengine.com ([66.111.4.27]:56351 "EHLO out3-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751755Ab2GDQuI (ORCPT ); Wed, 4 Jul 2012 12:50:08 -0400 X-Sasl-enc: 15LcwPtpd92Km36d2P4rI1hQMI/Uxu4MUg9JqKahRkxs 1341420606 Date: Wed, 4 Jul 2012 13:50:04 -0300 From: Henrique de Moraes Holschuh To: Pavel Machek Cc: ibm-acpi-devel@lists.sourceforge.net, platform-driver-x86@vger.kernel.org, kernel list Subject: Re: [ibm-acpi-devel] ethernet-related thermal emergency on Thinkpad x60 Message-ID: <20120704165004.GB7613@khazad-dum.debian.net> References: <20120704141756.GA2089@elf.ucw.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20120704141756.GA2089@elf.ucw.cz> X-GPG-Fingerprint: 1024D/1CDB0FE3 5422 5C61 F6B7 06FB 7E04 3738 EE25 DE3F 1CDB 0FE3 User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 04 Jul 2012, Pavel Machek wrote: > When using nework interface (eth0), machine starts to behave > weird. Like... complete freeze, then poweroff, then it hangs on boot > (initializing ACPI) until I let it to cool down... and I'm not even > using gigabit speed. > > Did anyone see it? Any ideas? Should I attempt to open it and clean > the dust? Opening it up and cleaning things is always a good idea. Some intel boxes have the GbEth MAC inside the chipset, so it is also worth checking whether the thermal contact between heatsink and chipset is operating properly (or just replace the old thermal compounts with Artic Silver 5 or some other non-reactive, extremely high quality compound that is suitable for the rapid thermal cycles of laptops). > thinkpad_acpi: THERMAL EMERGENCY: a sensor reports something is extremely hot! > thinkpad_acpi: temperatures (Celsius): 88 49 N/A 82 40 N/A 40 N/A 52 61 N/A N/A N/A N/A N/A N/A My guess is that the 82°C reading on the fourth sensor is the problem, althouhg the CPU is also quite hot. That sensor is usually the GPU, but if your thinkpad has an integrated GPU, it is likely to have been used for the northbridge/chipset. It can also be a shortcircuity in the ethernet PHY (either the chip, or some of the analog auxiliary circuitry). This is repairable by an skilled surface-mount technician if he can get his hands in the schematics and source the replacement components, but if you ask Lenovo about it, they will want to replace your entire planar card (motherboard)... -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh