amd64/157386: Enabling powerd with default settings on Intel Xeon-E3 results in system freeze

[David Graham]

>Number:         157386
>Category:       amd64
>Synopsis:       Enabling powerd with default settings on Intel Xeon-E3 results in system freeze
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-amd64
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat May 28 20:50:07 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     David Graham
>Release:        8.2-RELEASE
>Organization:
>Environment:
FreeBSD  8.2-RELEASE FreeBSD 8.2-RELEASE #0: Thu Feb 17 02:41:51 UTC 2011     root at mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64
>Description:
After enabling powerd, my system began having system freezes (requiring a hard reboot) on a daily basis.

The system is using some fairly recent hardware
- Intel E-1245 Xeon processor
- Intel C206 chipset
>How-To-Repeat:
Enable powerd with default settings.
>Fix:
add "-m 500" to the powerd flags in rc.conf.  The number was chosen arbitrarily.

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