From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexey Starikovskiy Subject: Re: Need for 'nomux' has been rising lately ... Date: Tue, 14 Oct 2008 19:59:01 +0400 Message-ID: <48F4C1C5.9090006@suse.de> References: <20081014111522.ZZRA012@mailhub.coreip.homeip.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from charybdis-ext.suse.de ([195.135.221.2]:42961 "EHLO emea5-mh.id5.novell.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751572AbYJNP7E (ORCPT ); Tue, 14 Oct 2008 11:59:04 -0400 In-Reply-To: <20081014111522.ZZRA012@mailhub.coreip.homeip.net> Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: Dmitry Torokhov Cc: Jiri Kosina , linux-input@vger.kernel.org, Carlos Tonussi Dmitry Torokhov wrote: > Hi Jiri, > > On Tue, Oct 14, 2008 at 04:55:22PM +0200, Jiri Kosina wrote: >> Hi Dmitry, >> >> lately, I have been seeing a couple of bug reports in which touchpad of >> certain notebooks misbehaved, and i8042.nomux solved the problem. Most >> recently, this happened on [1]. Do you have any idea what might be the >> cause of the need for nomux rising so much lately? Apparently, some older >> kernels behaved correctly even without this workaround, at least on Acer >> Aspire 5710, as referenced in the bugreport. >> > > I am always happy to blame ACPI code (especially EC) for bad > iteraction with input devices ;), especially since there weren't any > significant changes to i8042 in any recent kernels. Do you think the > person reporting the failure on Acer could try bisecting it? Could > ALexey Starikovskiy have any ideas whether there is bad EC iteractions > stopping timely delivery of mouse interrupts? > There was an issue with EC interrupt storm on several Acer notebooks lately, hopefully solved (bug 11549). Symptoms could be that keyboard/mouse are slow, missing keys, etc. I suggest you should try the patch in 11549, or acpi-test tree, and see if your problem goes away... Regards, Alex.