Re: New Motherboards ECC memory and PCI-E issues

jimomuraNOSPAM@xxxxxxxxxxx writes:
On Tue, 23 Jan 2007 12:57:20 GMT, anton@xxxxxxxxxxxxxxxxxxxxxxxxxx
(Anton Ertl) wrote:
OTOH, I never had any data errors (that I know of) until I bought the
ASUS K8V Deluxe in 2003 with ECC memory; this worked mostly, but for
some things (in particular, having to do with USB, but also often when
unpacking a Linux kernel) I got wrong data (without error messages or
anything).

Was that running Linux or another OS?

Linux and WME.

The errors are not always
correctable, but a signal should also be sent to the OS. Then
again, the problems might not have been due to memory, as you
mention below.

I don't think the problem was memory, for several reasons:

- The problem did not show up with things where memory errors
typically show up, like compiling.

- I used both the same memory and the same CPU (with the memory
controller) on the replacement board, and the problem went away.

OTOH, I don't see what other hardware than the CPU and memory is
involved when unpacking a Linux kernel package that has been read into
memory already.

I returned the motherboard, and got a K8V SE Deluxe
instead, which does not have this problem (it still has a problem
booting 64-bit Linux, but I know a workaround for that).

Oh? Which Linux?

Any 64-bit one that I tried, from 2.4.22 to 2.6.13.2, mostly
self-compiled stock kernels, but at least one SUSE kernel.

I have had occasion to check other peoples computers, (and my own)
with Memtest86 or other memory checking software, and over the
years I have come to the conclusion that bad memory systems (not
necessarly defective RAM) are the most common faults.

I have had much better luck with hardware. I know only one system
with bad memory (and that went bad after years of working fine). The
funny thing there was that it was ECC memory, but ECC was turned off
in the BIOS:-(.

- anton
--
M. Anton Ertl Some things have to be seen to be believed
anton@xxxxxxxxxxxxxxxxxxxxxxxxxx Most things have to be believed to be seen
http://www.complang.tuwien.ac.at/anton/home.html
.

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