Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2992884AbWJTW3G (ORCPT ); Fri, 20 Oct 2006 18:29:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S2992887AbWJTW3G (ORCPT ); Fri, 20 Oct 2006 18:29:06 -0400 Received: from webserve.ca ([69.90.47.180]:15048 "EHLO computersmith.org") by vger.kernel.org with ESMTP id S2992884AbWJTW3F (ORCPT ); Fri, 20 Oct 2006 18:29:05 -0400 Message-ID: <45394D10.3000503@wintersgift.com> Date: Fri, 20 Oct 2006 15:26:24 -0700 From: teunis User-Agent: Icedove 1.5.0.7 (X11/20061013) MIME-Version: 1.0 To: Dmitry Torokhov , linux-kernel@vger.kernel.org Subject: Re: various laptop nagles - any suggestions? (note: 2.6.19-rc2-mm1 but applies to multiple kernels) References: <4537A25D.6070205@wintersgift.com> <20061019194157.1ed094b9.akpm@osdl.org> <4538F9AD.8000806@wintersgift.com> <20061020110746.0db17489.akpm@osdl.org> In-Reply-To: X-Enigmail-Version: 0.94.0.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2894 Lines: 77 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Dmitry Torokhov wrote: > On 10/20/06, Andrew Morton wrote: >> On Fri, 20 Oct 2006 09:30:37 -0700 >> teunis wrote: >> >> > >> >> Please don't play with the Cc:s! Just do reply-to-all, thanks. >> >> > Andrew Morton wrote: >> > > On Thu, 19 Oct 2006 09:05:49 -0700 >> > > teunis wrote: >> > > >> > >> -----BEGIN PGP SIGNED MESSAGE----- >> > >> Hash: SHA1 >> > >> >> > >> Setting the internal clock to 100 Hz stablizes the laptop - and the >> > >> synaptics touchpad stops "crashing" (when "crashed" the pad >> reads out >> > >> all kinds of seemingly random values). I would suspect the driver >> > >> needs adjusting for the variable clock. Also - it's definitely >> nicer >> > >> on the laptop power use as far as I can tell - should this be in the >> > >> documentation? >> > > >> > > So you're saying that CONFIG_NO_HZ breaks the touchpad? >> > >> > yes. At least for Acer Travelmate 8000 and HP nx6310 and HP nx7400. >> > Other than the touchpad - there is not a lot of common hardware between >> > these units. The readout becomes highly unreliable. (in X it starts >> > jumping around - it SORT OF resembles the output) >> > >> > My suspicion is a timing problem in the synaptic USB driver >> >> OK, that's going to be hard to fix and it'd be awkward (and unpopular) to >> make inclusion of the dynamic-ticks feature dependent on fixing this. >> (Then again, it'd get Ingo into device drivers ;)) >> > > I wonder if the problem is with the in-kernel synaptics driver or with > X (itself or synaptics driver in it). Does the touchpad misbehaves > when you using GPM on text console? What about when you using legacy > mouse driver (as opposed to synaptics) in X? > Not sure - but testing now. on the flip side it seems that ACPI C3 (???) - restore after suspend to RAM anyways - halts high resolution timer and NO_HZ on one of the laptops. At that point the synaptics freezes solid. I've had CONFIG_NO_HZ disabled already but am now testing with high resolution timer turned off. (I'm too used to desktops) with that test I can be -almost- certain it's a kernel problem. now off to figure why ndiswrapper now doesn't load.... (it's a GPL module and the kernel claims it isn't... something changed but I'm not sure what yet as it works with rc1-git6) - - Teunis -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFFOU0GbFT/SAfwLKMRAiufAJ4nds4qf7e29GWHTwabrrqV/kjt+wCdE+h4 OFnqetyHrxg5O8GyNErgA2U= =oc4d -----END PGP SIGNATURE----- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/