Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750972AbWJJRJ4 (ORCPT ); Tue, 10 Oct 2006 13:09:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750973AbWJJRJ4 (ORCPT ); Tue, 10 Oct 2006 13:09:56 -0400 Received: from ug-out-1314.google.com ([66.249.92.168]:55681 "EHLO ug-out-1314.google.com") by vger.kernel.org with ESMTP id S1750956AbWJJRJz (ORCPT ); Tue, 10 Oct 2006 13:09:55 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=W8m6fs20BVLajGqMjktt7iGGhQaxIFQj9INJydWuNtPbV1SWfo8vIzBFsIoPYKnDj5UUOs5aaTKgg98VKlTUaRQViwAGUwt798Co+lEem+qOdC52MW4BZbYDfUcuUxSJZv0dHji9cdb0jBguLKvFz0Q2QD9d+lnh2RNusPSgbKU= Message-ID: Date: Tue, 10 Oct 2006 13:09:53 -0400 From: "Dmitry Torokhov" To: "John Stultz" Subject: Re: Keyboard Stuttering Cc: "Frank Sorenson" , linux-kernel@vger.kernel.org, "David Gerber" In-Reply-To: <200610061218.36883.dg-lkml@zapek.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <200610061218.36883.dg-lkml@zapek.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1318 Lines: 35 On 10/6/06, David Gerber wrote: > > I'm experiencing some severe keyboard stuttering on my laptop. The > > problem is particularly bad in X, and I believe it also occurs at the > > console, though I'm having a difficult time verifying that. The problem > > shows up as repeated characters (not regular key-repeat-related), and > > sometimes dropped key presses. > > (I'm not subscribed to the list, CC: to me if needed) > > Same problem here. Intel Core 2 Duo with 2.6.19-rc1 x86_64 SMP. Happens on > 2.6.17 too. I use 'noapic' as a workaround but that disables one of the CPU > core of course. > > I cannot reproduce the problem within the console nor gdm. Only on the X > desktop. > John, It looks like the only clocksource available on David's box is "jiffies" although the processor shows that it supporst tsc and PM timer is enabled and I think that this is what causes keyboard stuttering in X. See http://bugzilla.kernel.org/show_bug.cgi?id=7291. I believe clocksources is your turf, could you please take a look at this. Thanks! -- Dmitry - 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/