Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265338AbTIDRcu (ORCPT ); Thu, 4 Sep 2003 13:32:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265341AbTIDRcu (ORCPT ); Thu, 4 Sep 2003 13:32:50 -0400 Received: from zeus.kernel.org ([204.152.189.113]:38593 "EHLO zeus.kernel.org") by vger.kernel.org with ESMTP id S265338AbTIDRcr (ORCPT ); Thu, 4 Sep 2003 13:32:47 -0400 From: David Lang To: "Richard B. Johnson" Cc: linux-kernel@vger.kernel.org Date: Thu, 4 Sep 2003 10:24:13 -0700 (PDT) Subject: Re: serial console on x86 In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2097 Lines: 50 On Thu, 4 Sep 2003, Richard B. Johnson wrote: > On Thu, 4 Sep 2003, David Lang wrote: > > > I am attempting to install linux (debian 3 based) on some dual athlon > > boxes with no video card. The BIOS does include serial console > > capabilities > > > > once the system is installed I have no problem booting from the hard > > drive, but when I attempt to boot from a CD to install (ISOLINUX custom > > boot disk) I see the lilo prompt, the loading kernel message, the loading > > initrd.gz message and then it prints 'Ready.' and reboots the same > > bootdisk will work just fine if I install a video card in the machine (and > > the same kernel with lilo boots just fine without a video card after it > > gets installed) > > > > any ideas why the kernel may crash before printing any messages in this > > situation? I've tried this with 2.4.17 and 2.4.22 with the exact same > > results. > > > > David Lang > > append="console=ttyS0,9600" > ... in the lilo configuration works fine in the exact same kernels > you cite. However, the CD install does not have the console changed > so it will probably not work. The BIOS is never used past the point > where the OS is physically loaded so it makes no difference > if you have "serial console capabilities" in the BIOS. I have a similar line in the lilo configuration. if there is a video card in the system this works and I see the kernel boot over the serial port, if there is not a video card it reboots instead of running the kernel. David Lang > You can readily make an 'init' that opens a serial port if the > console failed to open. That's done all the while in embedded > systems. You just can't get that off a "distribution disk". > > Cheers, > Dick Johnson > Penguin : Linux version 2.4.22 on an i686 machine (794.73 BogoMips). > Note 96.31% of all statistics are fiction. > > - 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/