From owner-freebsd-usb@FreeBSD.ORG Wed Nov 12 12:00:21 2008 Return-Path: Delivered-To: freebsd-usb@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 66551106579B; Wed, 12 Nov 2008 12:00:21 +0000 (UTC) (envelope-from avg@icyb.net.ua) Received: from citadel.icyb.net.ua (citadel.icyb.net.ua [212.40.38.140]) by mx1.freebsd.org (Postfix) with ESMTP id 070258FC1E; Wed, 12 Nov 2008 12:00:19 +0000 (UTC) (envelope-from avg@icyb.net.ua) Received: from odyssey.starpoint.kiev.ua (alpha-e.starpoint.kiev.ua [212.40.38.101]) by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id NAA16104; Wed, 12 Nov 2008 13:58:59 +0200 (EET) (envelope-from avg@icyb.net.ua) Message-ID: <491AC502.9000507@icyb.net.ua> Date: Wed, 12 Nov 2008 13:58:58 +0200 From: Andriy Gapon User-Agent: Thunderbird 2.0.0.17 (X11/20081106) MIME-Version: 1.0 To: Nate Eldredge References: <4911BA93.9030006@icyb.net.ua> <491ABFCD.3060309@icyb.net.ua> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: freebsd-hackers@freebsd.org, FreeBSD Stable , freebsd-usb@freebsd.org Subject: Re: ukbd attachment and root mount X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 12 Nov 2008 12:00:21 -0000 on 12/11/2008 13:53 Nate Eldredge said the following: > On Wed, 12 Nov 2008, Andriy Gapon wrote: > >> on 05/11/2008 17:24 Andriy Gapon said the following: > [...] >>> I have a legacy-free system (no PS/2 ports, only USB) and I wanted to >>> try a kernel without atkbd and psm (with ums, ukbd, kbdmux), but was >>> bitten hard when I made a mistake and kernel could not find/mount root >>> filesystem. >>> >>> So I stuck at mountroot prompt without a keyboard to enter anything. >>> This was repeatable about 10 times after which I resorted to live cd. >>> >>> Since then I put back atkbdc into my kernel. I guess BIOS or USB >>> hardware emulate AT or PS/2 keyboard, so the USB keyboard works before >>> the driver attaches. I guess I need such emulation e.g. for loader or >>> boot0 configuration. But I guess I don't have to have atkbd driver in >>> kernel. >> >> This turned out not to be a complete solution as it seems that there are >> some quirks about legacy USB here, sometimes keyboard stops working even >> at loader prompt (this is described in a different thread). >> >> ukbd attachment still puzzles me a lot. >> I look at some older dmesg, e.g. this 7.0-RELEASE one: >> http://www.mavetju.org/mail/view_message.php?list=freebsd-usb&id=2709973 >> and see that ukbd attaches along with ums before mountroot. >> >> I look at newer dmesg and I see that ums attaches at about the same time >> as before but ukbd consistently attaches after mountroot. >> I wonder what might cause such behavior and how to fix it. >> I definitely would like to see ukbd attach before mountroot, I can debug >> this issue, but need some hints on where to start. > > I haven't been following this thread, and I'm pretty sleepy right now, > so sorry if this is irrelevant, but I had a somewhat similar problem > that was fixed by adding > > hint.atkbd.0.flags="0x1" > > to /boot/device.hints . > I can try this, but I think this wouldn't help for two reasons: 1. I already tried kernel without atkb at all 2. if ukbd driver is not attached then I don't see any way USB keyboard would work in non-legacy way Anyway I will try this, thank you. -- Andriy Gapon