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From: "Rodney W. Grimes" <rgrimes@gndrsh.aac.dev.com>
Message-Id: <199503141730.JAA10663@gndrsh.aac.dev.com>
Subject: Re: Frequent panics in 2.0-RELEASE
To: tege@cygnus.com (Torbjorn Granlund)
Date: Tue, 14 Mar 1995 09:30:26 -0800 (PST)
Cc: hackers@FreeBSD.org, tege@cygnus.com
In-Reply-To: <199503141039.CAA27452@cygnus.com> from "Torbjorn Granlund" at Mar 14, 95 02:39:28 am
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> 
> Starting with the floppies from ftp.freebsd.org, via the full 2.0 CDROM
> distribution, I am trying to build a mildly customized kernel.
> Unfortunately, I cannot get past the compile of the new kernel, since the
> existing kernel (i.e., the one from the distribution) keeps panicing.
> 
> Here is what I get on the screen (somewhat abridged):
> 
>   Fatal trap 1: privileged instruction fault while in kernel mode
>   instruction pointer = 0x8:0xf013d400
>   code segment = base 0x0, limit 0xfffff, type 0x1b
> 		  = DPL 0, pres 1, def32 1, gran 1
>   processor eflags = resume, IOPL = 0
>   current process = Idle
>   interrupt mask =
> 
>   panic: privileged instruction fault
>   syncing disks
> 
>   Fatal trap 12, ... etc etc
> 
> My system has an Asus PCI/I-486SP3G motherboard with and integrated NCR SCSI
> 2 controller and a 100 MHz Intel 486DX4, 256 kB L2 cache, and 16 Mb DRAM.  I
> have set the cache to do write-through instead of the defalt copy-back.  (In
> the BIOS that is, maybe the kernel overrides this.)  The only hard drive is
> a 500Mb SCSI 2 device.

I'll take a shot in the dark here....

In the advanced chipset setup menu do you have the Auto Configuration option
turned on or off?  If it is off try to turn it on.

What speed are the cache rams on your motherboard?

I have run 3 of these motherboards without problem.


-- 
Rod Grimes                                      rgrimes@gndrsh.aac.dev.com
Accurate Automation Company                   Custom computers for FreeBSD