ACPI broke going from 8 to 9

[Garrett Cooper]

On Sat, Dec 31, 2011 at 9:03 AM, Dan Allen <danallen46 at airwired.net> wrote:
> I just upgraded my Dell OptiPlex GX270 from RELENG_8 to RELENG_9.  The machine no longer boots.  However, if I put
>
>  hint.acpi.0.disabled=1
>
> in /boot/loader.conf then the machine runs fine.  With RELENG_8 the machine had no loader.conf, and the power button worked on my desktop machine.  Now with ACPI disabled my power button does not work.  I have found that the machine hangs at boot during a scan of the PCI bus, but if I disable that (hw.acpi.disable=pci) then the machine cannot find a boot drive.
>
> So I have lost functionality that worked fine in BSD 8.
>
> Thoughts?  Suggestions?

    Is your Optiplex running the latest BIOS firmware?
Thanks!
-Garrett