From owner-freebsd-stable@FreeBSD.ORG Tue Mar 7 01:37:45 2006 Return-Path: X-Original-To: stable@freebsd.org Delivered-To: freebsd-stable@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9FCD116A420 for ; Tue, 7 Mar 2006 01:37:45 +0000 (GMT) (envelope-from iedowse@iedowse.com) Received: from nowhere.iedowse.com (nowhere.iedowse.com [82.195.144.75]) by mx1.FreeBSD.org (Postfix) with SMTP id D57B343D45 for ; Tue, 7 Mar 2006 01:32:41 +0000 (GMT) (envelope-from iedowse@iedowse.com) Received: from localhost ([127.0.0.1] helo=iedowse.com) by nowhere.iedowse.com via local-iedowse id ; 7 Mar 2006 01:32:13 +0000 (GMT) To: Mike Tancsa In-Reply-To: Your message of "Mon, 06 Mar 2006 16:43:36 EST." <6.2.3.4.0.20060306163715.078b1f38@64.7.153.2> Date: Tue, 07 Mar 2006 01:31:58 +0000 From: Ian Dowse Message-ID: <200603070132.aa48789@nowhere.iedowse.com> Cc: stable@freebsd.org Subject: Re: RELENG_6: serial console drops back from 115200 to 9600 baud X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 07 Mar 2006 01:37:45 -0000 In message <6.2.3.4.0.20060306163715.078b1f38@64.7.153.2>, Mike Tancsa writes: >I think I am almost there, but in my case, I get some strange char >duplication after seeing the F1 prompt. The BIOS has console >redirection, so I can see it throughout the bootup process. ... >//bboooott..ccoo- ffiigg:: --DDhh// >BTX loader 1.00 BTX version is 1.01 >Consoles:ointernal >video/keyboardalserialiportoo//kkeeyybbooaarrdd That's probably expected if you enable dual console mode (-D) when the BIOS is also redirecting VGA output to the serial port. Each character goes to both the serial port and the screen, but the BIOS is also copying screen characters to the serial port so each character appears twice. Once the kernel starts it no longer uses BIOS calls to output to the screen. There might be a BIOS option to disable the redirection when booting. Alternatively you could remove the -D, but you will no longer get kernel boot messages on the VGA console. Ian