FreeBSD 6.1-STABLE: Unexplained power off

[Android Andrew [:]]

As I mentioned in previous post, I recompiled my kernel without 
ACPI/APM, with debug option. I've updated BIOS and tested the system.

Successful.
I mean successful crash.


Christian Walther wrote:
> This is just a wild, uneducated guess, because I'm not a long FreeBSD
> user, but from my point of view this error could really be related to
> ACPI/APM, as already has been suggested.
> Maybe the machine is trying to go to suspend, but fails while doing
> so, which in the end would mean that it can't recover from the
> suspend, but has to reboot completely, resulting in dirty file
> systems. It wouldn't reach the suspend state correctly, which could
> leave everything depending on ACPI/APM in a undefined state, including
> the hardware. This would explain why the machine has to be turned off
> properly by pressing toe power button for such a long time.
> 
> I'd try to use the machine without ACPI/APM enabled. If possible,
> compile a new kernel without it being enabled. This might not be
> possible because you're on a SMP-system, thou, but you might want to
> check your configuration files for suspend or hibernation -- and turn
> them of.
> With ACPI/APM turned on, leave the machine idle for some time and see
> if it shows the same behaviour. When it shuts down cleanly it's likely
> that suspend/hibernation fails due to the high load introduced by the
> build process.
> 
> I've seen and experienced similar problems on other platforms, such as
> OS X and (sorry) Linux.
>