From owner-freebsd-questions@FreeBSD.ORG Thu Apr 7 19:27:18 2005 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 18A6816A4CE for ; Thu, 7 Apr 2005 19:27:18 +0000 (GMT) Received: from chen.org.nz (chen.org.nz [210.54.19.51]) by mx1.FreeBSD.org (Postfix) with ESMTP id B951B43D1F for ; Thu, 7 Apr 2005 19:27:17 +0000 (GMT) (envelope-from jonc@chen.org.nz) Received: by chen.org.nz (Postfix, from userid 1000) id 59A7D5641E; Fri, 8 Apr 2005 07:27:14 +1200 (NZST) Date: Fri, 8 Apr 2005 07:27:14 +1200 From: Jonathan Chen To: Jani Luukkanen Message-ID: <20050407192714.GA3678@osiris.chen.org.nz> References: <4254EE05.8000302@soundflows.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4254EE05.8000302@soundflows.com> User-Agent: Mutt/1.4.2.1i cc: freebsd-questions@freebsd.org Subject: Re: Serial console connection problem X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Apr 2005 19:27:18 -0000 On Thu, Apr 07, 2005 at 11:23:33AM +0300, Jani Luukkanen wrote: > Hi! > > I have an issue with serial console connection with two FreeBSD machines > (Both with Intel SE7210TP1-E motherboard, other configured as "host" > from bios and other has ordinary com ports which are connected with > normal tested serial cable). > > Host machine is running FreeBSD 5.3 and the "client" one 4.10. > > Problem is that when trying to open the serial connection with tip, > error occurs as; > > /root@mos root # tip com1 > tip: /dev/cuaa0: Device busy > link down Try running fstat(1) against /dev/cuaa0 to try to find out what's holding the device. If I understand you correctly, you're doing this on the 4.10 machine. > > Main question is that how to get access first to the com1 port generally > and second to get ahold of the remote screen on the other end of the > serial cable? Make sure that you haven't got a getty running at the same time on both sides, and that you've got a null-modem connection between the two hosts instead of a straight thru'. Cheers. -- Jonathan Chen ---------------------------------------------------------------------- Power corrupts, Absolute Power is pretty neat