From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mircea Bardac Subject: Touchpad and i8042 Date: Sat, 19 May 2007 18:28:08 +0300 Message-ID: <200705191828.09719.dev.list@mircea.bardac.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from bravo.securenet-server.net ([207.210.84.244]:41354 "EHLO bravo.securenet-server.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758825AbXESP2t (ORCPT ); Sat, 19 May 2007 11:28:49 -0400 Received: from p5.pub.ro ([141.85.0.70] helo=mircea.home.bardac.net) by bravo.securenet-server.net with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.63) (envelope-from ) id 1HpQrG-0003yx-4j for linux-acpi@vger.kernel.org; Sat, 19 May 2007 11:28:39 -0400 Content-Disposition: inline Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: ACPI Devel Maling List Hi all, I've noticed a weird behaviour when monitoring roughly the number of interrupts fired. The number of interrupts for "i8042" increase dramatically when I move the pointer using the touchpad. I've only used "watch cat /proc/interrupts". dramatically = ~800 interrupts for only moving the finger from the top to the bottom of the touchpad. I'm using kernel 2.6.21.1, don't know if this happened before - I noticed it now. The interrupts only appear on touchpad usage, not on standby. I think it is a synaptics touchpad, but I'm not really sure (how could I find out?) Does anyone have an explanation for this? I've seen the "appletouch" problem problem on the linuxpowertop.org site but I don't know if they're related. If any other info is needed, let me know. Mircea