Lockup on Boot due to ACPI (Freebsd 7.0-RC2 i386)

[Jason Morgan]

On Sun, Feb 10, 2008 at 11:49:20AM -0500, Jason Morgan wrote:
> I just upgraded a system from 6.3-RELEASE to 7.0-RC2 (both i386) only
> to discover that the system won't boot with ACPI enabled. ACPI was
> working fine in 6.3. The problems occur at boot-up -- the system
> simply stops loading at approximately the same place during each
> attempt (noted below in the dmesg). I have added
> `hint.acpi.0.disabled=1' to loader.conf to get around the issue
> automatically. I have tried building new kernels with various options
> added/removed, rebuilt world with updated source, etc.
> 
> I have included my system information below. The dmesg output (a full
> boot with ACPI disabled) is `verbose' and I have edited it to show
> where the lockup happens. I am more than willing to help out with any
> debugging if needed. I just need some direction.

[snip]

This is still an issue. I updated my source today, rebuilt world and
kernel (disabling SMP), and the system still freezes at boot with ACPI
enabled.

If anyone has any suggestions as to how I can work around the problem,
they would be greatly appreciated.

Cheers,
~Jason