From owner-freebsd-hackers Sat Jun 3 09:47:05 1995 Return-Path: hackers-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.10/8.6.6) id JAA02447 for hackers-outgoing; Sat, 3 Jun 1995 09:47:05 -0700 Received: from gndrsh.aac.dev.com (gndrsh.aac.dev.com [198.145.92.241]) by freefall.cdrom.com (8.6.10/8.6.6) with ESMTP id JAA02441 for ; Sat, 3 Jun 1995 09:46:58 -0700 Received: (from rgrimes@localhost) by gndrsh.aac.dev.com (8.6.11/8.6.9) id JAA15241; Sat, 3 Jun 1995 09:46:07 -0700 From: "Rodney W. Grimes" Message-Id: <199506031646.JAA15241@gndrsh.aac.dev.com> Subject: Re: hang problems To: dawes@physics.usyd.edu.au (David Dawes) Date: Sat, 3 Jun 1995 09:46:07 -0700 (PDT) Cc: hackers@freebsd.org In-Reply-To: <199506030933.AA19600@physics.su.oz.au> from "David Dawes" at Jun 3, 95 07:33:14 pm X-Mailer: ELM [version 2.4 PL24] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Length: 1833 Sender: hackers-owner@freebsd.org Precedence: bulk > > >> As Jim Lowe wrote: > >> > > >> > Every once in a while after I reboot my system, it hangs. I am not sure > >> > what type of problem this is. Is there a method to obtain a core dump or > >> > drop the system into the kernel debugger after/during a system hang? > >> > >> Nope, the system is no longer running at this stage, it attempted to > >> reset the CPU (either way, i think it first tries the keyboard > >> controller reset, and then a CPU shutdown [wiping the page table > >> directory, and flush the TLB]). If the system is stuck at this > >> point, only a hardware reset will help. > >> > >> Rod, ain't this your baby? > > > >Nope, my baby is very solid. It is either a ``well reboot'' or > >``won't reboot'', it is never a ``Every once in a while'' type > >of problem. > > I've noticed that my new machine with an ASUS Triton board (PCI/I-P54TP4) > falls into the ``won't reboot'' category. Is this a known "feature" of > these? Yes, this has been fixed as of: RCS file: /home/ncvs/src/sys/i386/i386/vm_machdep.c,v ---------------------------- revision 1.36 date: 1995/04/26 07:38:35; author: rgrimes; state: Exp; lines: +14 -1 Add outb to keyboard controller to do a cpu_reset, this fixes 2 known cases of motherboards that failed to reboot. ---------------------------- Though this is now causing other boards to have a problem which caused: ---------------------------- revision 1.38 date: 1995/05/18 09:17:07; author: davidg; state: Exp; lines: +4 -1 Added "BROKEN_KEYBOARD_RESET" option to disable using the keyboard reset in cpu_reset(). Some MBs don't deal with this properly. Submitted by: Rod Grimes ---------------------------- -- Rod Grimes rgrimes@gndrsh.aac.dev.com Accurate Automation Company Custom computers for FreeBSD