Ryan Steffes wrote:

On 10/28/05, Julian Edwards <[EMAIL PROTECTED]> wrote:
Ryan Steffes wrote:

I thought I had finally gotten this fixed with the kernel option
nolapic, but it happened to me again. I am experiencing hard lock ups
that seem to be related to high data throughput, but aren't consistent
enough for me to track down. When it freezes, only hitting the reset
or power button fixes it.

I have an MSI K7N2 Delta 2 motherboard with an AMD Barton 2500+ in
it. It has a nforce northbridge. I am passing the kernel "acpi=no
noapic nolapic". I'm running 2.6.11-6mdk. I have one PVR 150. I have
two hard drives, running LVM to make one video share. I'm running
ivtv 0.3.9

What happens is a hard lock up. It generally happens when I'm
exercising the ethernet hard.
This exact same thing was happening to me too with my KT6 Delta.

[snip]

Can anyone give any advice on where to go from here?
Sure. The problem is almost certainly to do with interrupt sharing. In
my case it was a problem with the ACPI steering assigning too many
devices the same IRQ. I ended up fixing it by disabling unnecessary
onboard hardware (eg I don't need 8 USB controllers or onboard sound),
using acpi=off (is that different to your acpi=no ?) and re-positioning

According to proc/interrupts, there shouldn't be a sharing problem. However,
I'm unsure if there is a difference between acpi=no and acpi=off. I'll try
"off" and see if I can pound away on the NIC and the hard drive and see what
happens.

vi /usr/src/linux-`uname -r`/Documentation/kernel-parameters.txt

/acpi

       acpi=           [HW,ACPI] Advanced Configuration and Power Interface
                       Format: { force | off | ht | strict }
                       force -- enable ACPI if default was off
                       off -- disable ACPI if default was on
                       noirq -- do not use ACPI for IRQ routing
                       ht -- run only enough ACPI to enable Hyper Threading
strict -- Be less tolerant of platforms that are not
                               strictly ACPI specification compliant.

I think you were trying for "acpi=noirq noapic nolapic". And, it wouldn't hurt to throw in a "pci=noacpi" for good measure. Most of the 'net gets these parameters wrong, though, so I realize you saw someone else recommend this...

Note, also, that "acpi=off" would give you the same IRQ-related results as "acpi=noirq" (and disable the rest of ACPI, also).

Mike
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