From owner-freebsd-current@FreeBSD.ORG Sun Nov 23 12:07:55 2003 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B3C1016A4CE for ; Sun, 23 Nov 2003 12:07:55 -0800 (PST) Received: from mail.liwing.de (mail.liwing.de [213.70.188.162]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8423743FDF for ; Sun, 23 Nov 2003 12:07:53 -0800 (PST) (envelope-from rehsack@liwing.de) Received: (qmail 20325 invoked from network); 23 Nov 2003 20:07:51 -0000 Received: from stingray.liwing.de (HELO liwing.de) ([213.70.188.164]) (envelope-sender ) by mail.liwing.de (qmail-ldap-1.03) with SMTP for ; 23 Nov 2003 20:07:51 -0000 Message-ID: <3FC11397.70305@liwing.de> Date: Sun, 23 Nov 2003 20:07:51 +0000 From: Jens Rehsack User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.5) Gecko/20031116 X-Accept-Language: de-de, de, en-us, en MIME-Version: 1.0 To: Robert Watson References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit cc: current@freebsd.org Subject: Re: Machine freeze when X starts X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 23 Nov 2003 20:07:55 -0000 Robert Watson wrote: > On Mon, 17 Nov 2003, Jens Rehsack wrote: > > >>>Hmm. This failure mode is fairly common when a resource deadlock or lock >>>deadlock occurs in some kernel subsystems. Any chance you can get a >>>serial console on the box so you can drop to DDB and generate some ps and >>>stacktrace output? >> >>It seems to me a little bit more complicated to setup the serial >>console, so: yes, I can do it, but not today. Or - if you have a small >>"quick get DDB to serial console without many trouble", I can give it a >>quick start. I'll try to do this week. > > Hook up a null modem cable to the first serial port on your machine, and > to a serial port on another machine. On the other machine, use tip to > attach to the com port, or some other com program of your choice. Speed > should be 9600. ... Hi Robert, I had to build the kernels and world for the remote machine before, because I hadn't enabled the serial devices in the kernel, but I didn't get ready before today. I didn't get tip running, but my old serial terminal (Robotron P8000) worked fine. But the bug was gone in the meantime, so - sorry for now. But for the next time, I'm prepared. Best regards, Jens