kern/121575: ACPI regression from 6.2 to 7.0 -- S3 resume fails with VIA VT8235

[RC]

>Number:         121575
>Category:       kern
>Synopsis:       ACPI regression from 6.2 to 7.0 -- S3 resume fails with VIA VT8235
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Mar 10 19:40:00 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     RC
>Release:        7.0R
>Organization:
>Environment:
FreeBSD vulcan 6.2-RELEASE-p11 FreeBSD 6.2-RELEASE-p11 #0: Wed Feb 13 06:44:57 UTC 2008     root at i386-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC  i386
>Description:
Despite a few problems (on-board NIC and X11) S3 suspend/resume worked well with FreeBSD 6.2 on my MSI KM2M Combo L motherboard.  With 7.0R, on S3 resume, keyboard lights blink, but then video is never reinitialized, either with onboard or PCI Nvidia Geforce 4MX 420 (ATI r128 AGP unfortunately doesn't work even with 6.2).


>From running FreeBSD 6.2 system:
acpidump -dt: http://geocities.com/ryancooley/freebsd/acpidump-dt.log.gz
dmesg: http://geocities.com/ryancooley/freebsd/dmesg.log.gz

Motherboard Specs: http://www.msicomputer.com/product/p_spec.asp?model=KM2M_Combo-L


I will perform any other debugging/testing steps requested.
>How-To-Repeat:
Install FreeBSD7.  
Run: acpiconf -s3
Hit sleep/power button to resume.
Wait forever.

>Fix:
Downgrade to FreeBSD 6.2

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