NMI error (386 SX)

Andrzej Krzysztofowicz (ankry@green.mif.pg.gda.pl)
Wed, 10 Mar 1999 18:15:50 +0100 (CET)

Hi,
I was trying to run 2.2.3 (same problem with all 2.[12].* kernel I tried)
on an old 386SX machine with an ISA memory extention board inside
(4MB in SIMMs + 3.5 MB on the memory board) and received a series of:

> NMI: IOCK error (debug interrupt?)
...
> Process init (pid 1, process number 1, stackpage=c0003000)
...
> NMI: IOCK error (debug interrupt?)
...
> Process init (pid 1, process number 1, stackpage=c0003000)
...
etc. (system is dead, of course)

just after (or even during) starting init. No matter what the init process
is, init=/bin/bash give same result. Works fine with mem=4m, so the problem
must be related with the memory extention board.
I can restore (manually - don't have serial console) all data but I'm not
sure if they would be usefull...

The machine works stable with 2.0.3* kernels, however a mesage:

> Uhhuh. NMI received. Dazed and confused, but trying to continue
> You probably have a hardware problem with your RAM chips or a
> power saving mode enabled.

appeared during boot (while starting INIT).

Is there any chance to get it working with 2.2 or do I have broken
hardware ?

I don't know if it is related, but this machine often has problem with
rebooting (hangs before reboot, or after reboot BIOS reports all possible
BIOS-detectable errors)

Regards
Andrzej

-- 
=======================================================================
  Andrzej M. Krzysztofowicz               ankry@mif.pg.gda.pl
  phone (48)(58) 347 14 61
Faculty of Applied Phys. & Math.,   Technical University of Gdansk


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