2.2.12-20/2.2.14/2.2.15pre17 Lockup on i820 Board with cyclades I/O board

From: Henning P. Schmiedehausen (hps@tanstaafl.de)
Date: Wed Apr 12 2000 - 04:40:00 EST

Hi,

I was preparing a system for a customer containing:

Gigabyte 6CXC board (based on Intel i820 chipset)
Intel Pentium III 600EB CPU (133 MHz FSB)
512 MB RAM
Matrox G-200 Videoboard
Adaptec 29160 SCSI hostadapter , driving an 9 GB IBM and a 120 GB Arena HW-RAID
3COM 3c905B Network card
Cyclades Cyclom YeP with 16 serial ports (DB-25 box)

I installed a RedHat 6.x (first 6.1, then 6.2) on the machine and got always
the same result:

- cyclades box not connected:

  insmod cyclades shows the boot message and "0 port detected"

- cyclades box connected via SCSI cable to the PCI-board:

  complete system lockup

The same board worked flawlessly in a i440BX based board (Gigabyte
GA-6BX7), an intel 430 based board (Tyan Tomcat IV) and a i440BX based
dual processor board (Gigabyte GA-6BXD).

On the i820 board, the DOS-based diagnose tool (cyctest) worked (!). Only
under Linux the board locked up.

Are there any known incompatibilities between the i820 Chipset and the
cyclades boards? I saw another posting about PCI spaces on the YoP
board, maybe these problems are related.

        Regards
                Henning 

-- 
Dipl.-Inf. (Univ.) Henning P. Schmiedehausen --             hps@tanstaafl.de
TANSTAAFL! Consulting - Unix, Internet, Security      

Hutweide 15                   Fon.: 09131 / 50654-0    "There ain't no such
D-91054 Buckenhof             Fax.: 09131 / 50654-20    thing as a free Linux"

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