i386/162524: No full shutdown in FreeBSD 9.0-RC1

[Alie Tan]

>Number:         162524
>Category:       i386
>Synopsis:       No full shutdown in FreeBSD 9.0-RC1
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-i386
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Nov 13 16:50:03 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     Alie Tan
>Release:        FreeBSD 9.0-RC1 i386 and FreeBSD 8.2-STABLE i386
>Organization:
>Environment:
FreeBSD fbsd-v100.at.mybox 9.0-RC1 FreeBSD 9.0-RC1 #0: Tue Oct 18 18:30:38 UTC 2011     root at obrian.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386

>Description:
When i try to:

# shutdown -p now

the screen goes blank, yet the backlight stays on and the HD does not spin down. I let it idle for 30 minutes and it did nothing at this point.

I've tried shutdown with Linux and Windows the result is those 2 OS'es shutdown my system completely 
>How-To-Repeat:
Execute

# shutdown -p now
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: