From owner-freebsd-current@FreeBSD.ORG Fri Jan 9 09:37:07 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 4B3BA106566C for ; Fri, 9 Jan 2009 09:37:07 +0000 (UTC) (envelope-from dougb@FreeBSD.org) Received: from mail2.fluidhosting.com (mx22.fluidhosting.com [204.14.89.5]) by mx1.freebsd.org (Postfix) with ESMTP id E70808FC0C for ; Fri, 9 Jan 2009 09:37:06 +0000 (UTC) (envelope-from dougb@FreeBSD.org) Received: (qmail 21857 invoked by uid 399); 9 Jan 2009 09:37:06 -0000 Received: from localhost (HELO lap.dougb.net) (dougb@dougbarton.us@127.0.0.1) by localhost with ESMTPAM; 9 Jan 2009 09:37:06 -0000 X-Originating-IP: 127.0.0.1 X-Sender: dougb@dougbarton.us Date: Fri, 9 Jan 2009 01:37:04 -0800 (PST) From: Doug Barton To: Garrett Cooper In-Reply-To: <7d6fde3d0901072349i50d04d2ch34f308388c9fd414@mail.gmail.com> Message-ID: References: <7d6fde3d0901072349i50d04d2ch34f308388c9fd414@mail.gmail.com> User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) X-message-flag: Outlook -- Not just for spreading viruses anymore! X-OpenPGP-Key-ID: 0xD5B2F0FB Organization: http://www.FreeBSD.org/ MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: FreeBSD Current Subject: Re: X becomes unresponsive with nvidia / xscreensaver and desktop panics X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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: Fri, 09 Jan 2009 09:37:07 -0000 On Wed, 7 Jan 2009, Garrett Cooper wrote: > Hello folks, > As many probably know, I recently installed FreeBSD 8-CURRENT on > my desktop. Why would we know that? I mean good for you, but seriously ... :) > One of the things I'm noting is that when I use dual displays with > the nvidia driver, and xscreensaver kicks in and keeps going for a > period of time, the machine's X.org console eats up a core, and when I > try and do anything like gdb Xorg, the system hangs, attempts to panic > (I assume that's the case because I hear it beep and attempt to > restart), then I have to give it a warm boot. truss(1)'ing Xorg showed > that there were a lot of SIGALARM's being fired and masked. No solutions, but a few general comments. First, I know that the author of xscreensaver has put a lot of work into dual head stuff, and also that it creates a lot of problems, so you're not alone here. If you get any conclusive evidence that xscreensaver is at fault you should contact him at http://www.jwz.org/xscreensaver/bugs.html A few things you can try to narrow it down .... first try turning off the xscreensaver daemon and just run one of the screensaver programs full screen for a while to see if that causes the crash. It's also worth testing GL vs. non-GL screensavers. I had a problem with GL stuff for a while that was fixed by an nvidia driver update a few versions ago. You should probably also try running with just the nv driver and see if that causes the same crash. Finally, you might try setting debug.debugger_on_panic=0 in /etc/sysctl.conf if you don't have it already. That will cause panics to go directly to dumping which is useful if you're in X. hth, Doug -- This .signature sanitized for your protection