From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Torokhov Subject: Re: Touchpad and i8042 Date: Sun, 20 May 2007 22:35:12 -0400 Message-ID: <200705202235.13742.dtor@insightbb.com> References: <200705191828.09719.dev.list@mircea.bardac.net> <20070519154220.GA14506@srcf.ucam.org> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from gateway.insightbb.com ([74.128.0.19]:45961 "EHLO asav17.insightbb.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751980AbXEUCo4 (ORCPT ); Sun, 20 May 2007 22:44:56 -0400 In-Reply-To: <20070519154220.GA14506@srcf.ucam.org> Content-Disposition: inline Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Matthew Garrett Cc: Mircea Bardac , ACPI Devel Maling List On Saturday 19 May 2007 11:42, Matthew Garrett wrote: > On Sat, May 19, 2007 at 06:28:08PM +0300, Mircea Bardac wrote: > > > 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. > > The touchpad is attached to an i8042. When you touch it, it sends data > and generates interrupts. That's perfectly normal. Yep. With Synaptics touchpad that by default has 80 pps @ 6 bytes per packet you should be getting ~480 interrupts per second. -- Dmitry