Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932226AbWAJPhe (ORCPT ); Tue, 10 Jan 2006 10:37:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932229AbWAJPhd (ORCPT ); Tue, 10 Jan 2006 10:37:33 -0500 Received: from wproxy.gmail.com ([64.233.184.202]:32085 "EHLO wproxy.gmail.com") by vger.kernel.org with ESMTP id S932226AbWAJPhd convert rfc822-to-8bit (ORCPT ); Tue, 10 Jan 2006 10:37:33 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=G4PqTgK1BCgzfS21LDQ1q/ITiB+o+0kyk24AiBloK3vNlSvrB6RPWbZfBDEZ6JiS8mpDA+zP1TaLtgfv54P5k0mp0UPIQC6kvujLkvYNp/Fc/4JTn/1DBv5Ih+08C5a/qBjkITO1lgoevpzQE6ZrNLhtUlerWgzWPpCsGYsvyZQ= Message-ID: Date: Tue, 10 Jan 2006 10:37:31 -0500 From: Dmitry Torokhov Reply-To: dtor_core@ameritech.net To: Vojtech Pavlik Subject: Re: PROBLEM: PS/2 keyboard does not work with 2.6.15 Cc: Alan Stern , Martin Bretschneider , linux-kernel@vger.kernel.org, Jan Engelhardt , linux-usb-devel@lists.sourceforge.net, Greg KH , Leonid In-Reply-To: <20060110152807.GB22371@suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Content-Disposition: inline References: <20060110074336.GA7462@suse.cz> <20060110152807.GB22371@suse.cz> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1541 Lines: 36 On 1/10/06, Vojtech Pavlik wrote: > On Tue, Jan 10, 2006 at 10:12:21AM -0500, Alan Stern wrote: > > On Tue, 10 Jan 2006, Vojtech Pavlik wrote: > > > > > It's usually that the BIOS does an incomplete emulation of the i8042 > > > chip, while still getting in the way to the real i8042. Usually GRUB and > > > DOS don't care about sending any commands to the i8042, and so they > > > work. The Linux i8042.c driver needs to use them to enable the PS/2 > > > mouse port and do other probing, and if the commans are not working, it > > > just bails out. > > > > > > The question of course is why the handoff code doesn't work on that > > > platform. > > > > It turned out that a BIOS upgrade fixed the problem, but this doesn't > > answer your question. > > > > The problem wasn't an incomplete emulation of the i8042, because when the > > USB handoff code was commented out the PS/2 keyboard worked okay. This > > means the handoff, when enabled, wasn't being done correctly. That could > > be the fault of the USB drivers or the BIOS (or both). We have no way to > > tell which, because the users have all switched to the newer BIOS. > > As usual with BIOS interaction problems. > We'll just have to wait for another report. "Sluggish typing" report looks promising. -- 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/