Hi Mustafa,

The ACPI_DISABLE_ON_POWEROFF option is a compatibility stuff
for older implementation of ACPI in NetBSD.
The original problem was reported in PR#24869.
With ACPI disabled, recent motherboards are reported to fail
rebooting/shutdown.
So basically you don't have to enable that option.

I should have added some notes on that option in the acpi(4) man page,
or more descriptive comment in the GENERIC file.
I'll work on this this weekend.

Thanks for head-up for me!

From: Mustafa Dogan <Mustafa.Dogan@politics.ankara.edu.tr>
Subject: Re: kern/27180: NetBSD 2.0 RC2 and RC3 failed to reboot
Date: Thu, 21 Oct 2004 14:08:38 +0400 (MEDT)

> I want to add something:
> While I was compiling 2.0-RC4, I disabled ACPI_DISABLE_ON_POWEROFF option,
> and "halt", "reboot" and "poweroff" now working as expected.
> Being sure, I re-enabled
> options ACPI_DISABLE_ON_POWEROFF
> compiled and rebooted with new kernel. "reboot" command failed.
> Then, re-disabled
> #options ACPI_DISABLE_ON_POWEROFF
> compiled new kernel and rebooted. "reboot" command now working.
> I think ACPI_DISABLE_ON_POWEROFF option is suspicious.
> By the way, what does this option?
> If needed, I can send full kernel config file and dmesg output.
> 
> Mustafa Dogan
> dogan@politics.ankara.edu.tr