Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261189AbVCZRUD (ORCPT ); Sat, 26 Mar 2005 12:20:03 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261190AbVCZRUD (ORCPT ); Sat, 26 Mar 2005 12:20:03 -0500 Received: from adsl-67-120-171-161.dsl.lsan03.pacbell.net ([67.120.171.161]:50185 "HELO linuxace.com") by vger.kernel.org with SMTP id S261189AbVCZRT7 (ORCPT ); Sat, 26 Mar 2005 12:19:59 -0500 Date: Sat, 26 Mar 2005 09:19:58 -0800 From: Phil Oester To: Jan Engelhardt , Luca , linux-kernel@vger.kernel.org Subject: Re: Garbage on serial console after serial driver loads Message-ID: <20050326171958.GA6121@linuxace.com> References: <20050325202414.GA9929@dreamland.darkstar.lan> <20050325203853.C12715@flint.arm.linux.org.uk> <20050325210132.GA11201@dreamland.darkstar.lan> <20050326151005.D12809@flint.arm.linux.org.uk> <20050326155549.GA5881@linuxace.com> <20050326163729.A23306@flint.arm.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050326163729.A23306@flint.arm.linux.org.uk> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1304 Lines: 29 On Sat, Mar 26, 2005 at 04:37:29PM +0000, Russell King wrote: > > But intererstingly, on identical boxes, the garbage only appears on > > those hooked up to a PortMaster device - those using a Cyclades never > > display this problem. (???) > > Sorry, I don't understand your scenarios. Can you explain the > circumstances under which you see corruption? > > From the kernel messages you've quoted above, I can only think that > you're not using ttyS0 as the serial console - if you were, my > understanding of this issue would indicate that you should get the > garbage immediately after the line starting "Serial:" > > Either my understanding of the cause of this problem is wrong, or > I'm not understanding your setup. I have a number of PowerEdge 2550 servers. All are setup with serial console on ttyS0 @ 9600. One group uses a (old) Portmaster device for console access, the other group uses a Cyclades device. Only those servers using the Portmaster device exhibit the garbage problem. The Cyclades group never displays garbage on boot. Phil - 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/