From: rhg@NCoast.ORG (Rich Garrett)
Subject: Detective Needed for SCSI Drives & ADAPTEC 1542B - System Crashes
Organization: North Coast Public Access *NIX, Cleveland, OH
Date: Sun, 10 Jan 1993 22:51:22 GMT
Followup-To: rhg@ncoast.org
Summary: System crashes since upgraded to SCSI Drives & Adaptec 1542B
Keywords: Xenix, SCSC, 1542B

Since I upgraded to SCSI drives and the Adpetec 1542B Controller, my system 
CRASHES 2X per day!, and I have been unable to determine why or how this 
is happening.  Please, if you have seen something like this -or- have an 
idea as to what else to try, let me know.

PROBLEM
	The system crashes giving the following error message about 1-2 times
	per day.  


Sun Jan 10 15:26:53
TRAP 0000000E in SYSTEM, error code=00000000
   eax=00000005,  ebx=00000000,  ecx=00000000,  edx=000000A1
   esi=00054330,  edi=61206465,  ebp=06000518,  fl=00010206
   uds=00000018,  es=00000018,  fs=0000003F,  gs=0000003F, tr=00000100
   pc=00000020:00023E10,  ksp=060004E8

kernel: PANIC: non-recoverable kernel page fault

BACKGROUND

	The system is used for public distribution of news and mail as well 
	as having 4 dialin lines for shell access.  Uptime is a concern. It
	seems if the crash happens during times of heavy disk activity - but
	that could be just my 'thinking' 

CONFIGURATION

	The following is the startup under XENIX 2.3.4 from SCO for the
	system ncoast:

Sun Jan 10 16:38:13

device    address	vector	dma	comment
----------------------------------------------------------------------------
%fpu      -		35	-	type=80387
%floppy   0x03F2-0x03F7	06	2	unit=0 type=96ds15
%floppy   -		-	-	unit=1 type=135ds18
%serial   0x03F8-0x03FF	04	-	unit=0 type=Standard nports=1
%serial   0x02F8-0x02FF	03	-	unit=1 type=Standard nports=1
%parallel 0x0378-0x037A	07	-	unit=0
%tape     0x0220-0x0224	05	1	type=archive
%acl      -		-	-	Star Gate ACL Driver
%console  -		-	-	unit=vga type=0
%disk     0x0330-0x0332	11	5	type=ASGD00 unit=0 cyls=1280 hds=64 secs=32
Autoboot from rootdev 1/40, pipedev 1/40, swapdev 1/41
mem: total = 16000k, reserved = 4k, kernel = 2164k, user = 13832k
kernel: drivers = 4k, 12 screens = 68k, 1200 i/o bufs = 1200k, msg bufs = 8k
nswap = 16000, swplo = 0, Hz = 50, maximum user process size = 18632k

Sun Jan 10 16:44:47
%disk     -		-	-	type=ASGD01 unit=0 cyls=1029 hds=64 secs=32

SYSTEM SPECS
	486/33 256K Cache and 16MB Ram
	AMI (c) 1990 Bios
	TRIDENT TVGA C3.0 VGA Card
	Adaptec 1542B SCSI Card (3.10 Bios)
	Fujitsu 2266 as Drive 0
	Micropolos 1528 as Drive 1
	Stargate ACL 8 Port Serial Card

Again, if you have any ideas as to what I need to look at or change, please
drop me a note.  We ar using all good parts, conditioned power via a Triplet,
and have tried almost every combination on the motherboard BIOS.  The harddrives
are not defined in Bios as the Adaptec SCSI controller eliminates the need
for that.  I have tried to use scsicntl to check the configuration of the
Adaptec 1542B with scsicntl and have been unable to correctly use it.

Thank you in advance. As this is a news hub for several local systems, PLEASE
let me know if you have ideas.

Rich Garrett 
-- 

Richard H. Garrett                                           rhg@ncoast.ORG
NCoast Public Access UN*X - (216)582-2441,Telebit Worldblazer, login: makeuser
4 lines, shell access granted at time of login.