From owner-freebsd-hackers@FreeBSD.ORG Fri Aug 3 19:34:09 2012 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 209431065670 for ; Fri, 3 Aug 2012 19:34:09 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-ob0-f182.google.com (mail-ob0-f182.google.com [209.85.214.182]) by mx1.freebsd.org (Postfix) with ESMTP id D9DB38FC0C for ; Fri, 3 Aug 2012 19:34:08 +0000 (UTC) Received: by obbun3 with SMTP id un3so1883776obb.13 for ; Fri, 03 Aug 2012 12:34:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; bh=qN29EcLgNcQRf0ZCt4ds0pSyBFpC5eY+BidwK3l+qiQ=; b=Cdrmt/FHQRoVc/IjV+tFjHOSBlms/XNjRWgmygDZnKgCISrmBic1WGA/1TRQ/a82rk vfWfA59MgpDUIewtEPOAY0Sy4M3RSlI8AYmDdsQ5PMbWzncdhTANcSIz8HIokLbfaEHX 0DsIgzuWpY1uQ/vmgX4f31Pod593pwj1uZZD7annhlZ/sjT5R1/bm2ePP/mZwPbyHgmK 5s4/UcWpq9GGQ9wNHKzZfSG50bH+jtwe7alPoGwJaBs+V79reM0Z/GQV/8/wscSE5+ew Ma5GjjCKjM3Dwxze2uK2yFO9oSQue5z7nAA5Q08BwH7mqnLClJ/chNEEfKOkYUNP+wI/ kXFg== MIME-Version: 1.0 Received: by 10.182.89.102 with SMTP id bn6mr7362543obb.7.1344022448296; Fri, 03 Aug 2012 12:34:08 -0700 (PDT) Sender: adrian.chadd@gmail.com Received: by 10.76.151.3 with HTTP; Fri, 3 Aug 2012 12:34:08 -0700 (PDT) In-Reply-To: <501871FD.601@rawbw.com> References: <501871FD.601@rawbw.com> Date: Fri, 3 Aug 2012 12:34:08 -0700 X-Google-Sender-Auth: kpRvSULcDVTHMt2kyccXSojFpFc Message-ID: From: Adrian Chadd To: Yuri Content-Type: text/plain; charset=ISO-8859-1 Cc: freebsd-hackers@freebsd.org Subject: Re: How to diagnose system freezes? X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 03 Aug 2012 19:34:09 -0000 The way to diagnose this problem is to cut your system back to the bare minimum set of options/modules and see if it still hangs. That means no sound, no graphics/video, USB if you don't have any other option. Then add each device at a time until it starts to misbehave. You could try say, disabling sound (removing the sound device from the kernel and not loading the modules), then see if it still happens. Adrian