i386/89031: smart battery queries make FreeBSD to hang

[Pierre-Luc Drouin]

>Number:         89031
>Category:       i386
>Synopsis:       smart battery queries make FreeBSD to hang
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-i386
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Nov 14 20:50:13 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator:     Pierre-Luc Drouin
>Release:        FreeBSD 6.0-STABLE (Nov 10th 2005 sources)
>Organization:
>Environment:
>Description:
Monitoring tools like vmbsdbatt or xfce4-battery-plugin that query the status of the battery make FreeBSD to hang. This problem appeared on my laptop (Dell Precision M70 with Pentium M) after updating from 6.0-RELEASE to 6.0-STABLE on Nov 10th 2005. When a query is made by the monitoring tool, the system freezes for about 1 second and then goes back to normal. This problem has also been reported on -stable mailing list by another user running 6.0-stable on a Dell Inspiron 8600c
>How-To-Repeat:
run "acpiconf -i loop"
>Fix:
              
>Release-Note:
>Audit-Trail:
>Unformatted: