From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264917AbUEQGmr (ORCPT ); Mon, 17 May 2004 02:42:47 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264922AbUEQGmr (ORCPT ); Mon, 17 May 2004 02:42:47 -0400 Received: from smtp813.mail.sc5.yahoo.com ([66.163.170.83]:410 "HELO smtp813.mail.sc5.yahoo.com") by vger.kernel.org with SMTP id S264917AbUEQGmo (ORCPT ); Mon, 17 May 2004 02:42:44 -0400 From: Dmitry Torokhov To: Jan De Luyck Subject: Re: [2.6.6] Synaptics driver is 'jumpy' Date: Mon, 17 May 2004 01:42:41 -0500 User-Agent: KMail/1.6.2 Cc: linux-kernel@vger.kernel.org References: <200405161222.48581.lkml@kcore.org> <200405161429.10448.dtor_core@ameritech.net> <200405170832.32256.lkml@kcore.org> In-Reply-To: <200405170832.32256.lkml@kcore.org> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <200405170142.41289.dtor_core@ameritech.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Monday 17 May 2004 01:32 am, Jan De Luyck wrote: > On Sunday 16 May 2004 21:29, Dmitry Torokhov wrote: > > On Sunday 16 May 2004 02:06 pm, Jan De Luyck wrote: > > > On Sunday 16 May 2004 19:18, Dmitry Torokhov wrote: > > > > Hmm.. there was no changes to PS/2 processing between 2.6.5 and 2.6.6 > > > > except for some Logitech tweaking, but it should not affect Synaptics > > > > handling in any way... > > > > > > > > Could you check if you still have DMA enabled on your disks, check your > > > > time source (TSC, ACPI PM timer, etc) and probably boot with acpi off? > > > > > > > > Thank you. > > > > > > Dmitry, > > > > > > Booting with acpi=off fixes the problem, although I'm curious to what the > > > problem actually is. > > > > > > I've attached the dmesgs from 2.6.6, 2.6.5, and 2.6.6 with acpi=off. > > > > > > There is a line that says "Invalid control registers" that I wonder where > > > it comes from, but you might see something more here than I do. > > > > It comes from speedstep-centrino module, could you please try booting with > > ACPI but without speedstep-centrino loaded? Also, does it help if you do > > not compile/ load ACPI battery module? > > Neither has any effect. > > I've also disabled CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI, figuring there might be > some problem with that, but that doesn't change a thing. > Perhaps we need to check with ACPI guys as it seems that you are affected by this code and there were some changes to ACPI subsystem between 2.6.5 and 2.6.6. > Also, I'm wondering if there's any point in using the CONFIG_X86_PM_TIMER > timesource? > It is supposed to be unaffected by frequency changes which is a good thing. I am running with it, but I think I've seen couple of reports that it caused time go twice as fast. -- Dmitry