Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161099AbWHRUgQ (ORCPT ); Fri, 18 Aug 2006 16:36:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161100AbWHRUgQ (ORCPT ); Fri, 18 Aug 2006 16:36:16 -0400 Received: from caramon.arm.linux.org.uk ([217.147.92.249]:18959 "EHLO caramon.arm.linux.org.uk") by vger.kernel.org with ESMTP id S1161099AbWHRUgP (ORCPT ); Fri, 18 Aug 2006 16:36:15 -0400 Date: Fri, 18 Aug 2006 21:36:07 +0100 From: Russell King To: Mark Hounschell Cc: Lee Revell , "linux-os (Dick Johnson)" , Paul Fulghum , linux-kernel Subject: Re: Serial issue Message-ID: <20060818203607.GK21101@flint.arm.linux.org.uk> Mail-Followup-To: Mark Hounschell , Lee Revell , "linux-os (Dick Johnson)" , Paul Fulghum , linux-kernel References: <1155915851.3426.4.camel@amdx2.microgate.com> <1155923734.2924.16.camel@mindpipe> <44E602C8.3030805@microgate.com> <1155925024.2924.22.camel@mindpipe> <1155928885.2924.40.camel@mindpipe> <44E6221D.4040008@compro.net> <1155932916.2924.47.camel@mindpipe> <44E623EB.1060908@compro.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <44E623EB.1060908@compro.net> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1253 Lines: 32 On Fri, Aug 18, 2006 at 04:32:43PM -0400, Mark Hounschell wrote: > Lee Revell wrote: > > On Fri, 2006-08-18 at 16:25 -0400, Mark Hounschell wrote: > >> Take it from someone who actually still uses dumb terminals every day, > >> any thing over 9600 baud still requires some kind of flow control for > >> reliable consistent operation. Software (Xon/Xoff) and or hardware > >> (RTS/RTS/DTE) flow control. > >> > > > > Any idea why the serial console does not work at all with flow control > > enabled (regardless of whether the host runs Linux or another OS)? > > > > Lee > > > > > > Your cable is probably wrong. Both ends have to be using the type of flow > control your cable is wired for. Not quite true. You can use XON/XOFF or hardware flow with a fully populated cable, but if you have a sparsely populated cable (RX,TX,GND only) then hardware flow control can't (and won't) work. -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 Serial core - 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/