Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759478AbXFDRq4 (ORCPT ); Mon, 4 Jun 2007 13:46:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759102AbXFDRqr (ORCPT ); Mon, 4 Jun 2007 13:46:47 -0400 Received: from wa-out-1112.google.com ([209.85.146.176]:27420 "EHLO wa-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759073AbXFDRqq (ORCPT ); Mon, 4 Jun 2007 13:46:46 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=i9rKmmqPEUomweXTrzZLsj/jBfEAOGVDQdXSbibpFS4pphx/v91vVMEfUDIg6Z25TrXY5HrQxdTRGYR5C42Mes/fXExqreqB7MI5VboziMmc3uyVu/OEQ51PyY9sVAigMcqIgicjDSOdhWwE05PfMzfLt9e8valTy7N99SZs0Vo= Message-ID: Date: Mon, 4 Jun 2007 13:46:45 -0400 From: "Dmitry Torokhov" To: "Henrique de Moraes Holschuh" Subject: Re: 2.6.22-rc[23]: blinking capslock led, stuck keys? Cc: "Pavel Machek" , "Andi Kleen" , "Jiri Kosina" , "kernel list" In-Reply-To: <20070604163406.GA1120@khazad-dum.debian.net> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20070604112426.GA2707@elf.ucw.cz> <20070604130903.GC1971@elf.ucw.cz> <200706041543.49071.ak@suse.de> <20070604135427.GA19466@elf.ucw.cz> <20070604163406.GA1120@khazad-dum.debian.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1419 Lines: 31 On 6/4/07, Henrique de Moraes Holschuh wrote: > On Mon, 04 Jun 2007, Dmitry Torokhov wrote: > > >...but I'm not quite sure it is a buggy keyboard. It happens _way_ too > > >often. Launch the line above and try to do some typing... > > > > This used to work fine on my box last time I tried it (the switch > > itself is offloaded to a keventd and shoud not get in the way) but > > then they push all kind of ACPI/SMM crap together with KBC so who > > knows... I should try it again when I get home. > > Err... in laptops, almost *always* the KDC is emulated by the embedded > controller, so I bet you're right on the money, there. It is not "a buggy > KDC", it is a buggy EC firmware and/or buggy SMBIOS which is a lot more > common. > > And DoS'ing the EC is very high on the Don't Do That list on a laptop. If > the X60 is only losing keypresses and producing no bigger fireworks, that's > outstanding behavior (as far as I trust ThinkPad firmware, anyway). > > So please throttle anything that might access the KDC way too much (as > compared to normal keyboard operation by an user). What would be reasonable throttling? Once every 100 ms? -- 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/