>Number:         162859
>Category:       kern
>Synopsis:       [acpi] ACPI battery/acline monitoring partialy working 
>(switching)
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Nov 24 21:50:08 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     Maciej Suszko
>Release:        9.0-PRERELEASE
>Organization:
>Environment:
FreeBSD arsenic.lan 9.0-PRERELEASE FreeBSD 9.0-PRERELEASE #0 r227939: Thu Nov 
24 21:27:32 CET 2011     r...@arsenic.lan:/usr/obj/usr/src/sys/GENERIC  amd64
>Description:
This problem is similar to kern/160838, but in my case - acpiconf -i batt show 
all the information (AC adapter connected):

tlhscd@arsenic:~ $ sysctl hw.acpi.acline
hw.acpi.acline: 1

tlhscd@arsenic:~ $ acpiconf -i batt
Design capacity:        4241 mAh
Last full capacity:     4241 mAh
Technology:             secondary (rechargeable)
Design voltage:         14400 mV
Capacity (warn):        213 mAh
Capacity (low):         43 mAh
Low/warn granularity:   100 mAh
Warn/full granularity:  100 mAh
Model number:           Primary
Serial number:          11436 2010/03/05
Type:                   LIon
OEM info:               Hewlett-Packard
State:                  charging 
Remaining capacity:     99%
Remaining time:         unknown
Present rate:           341 mA (5703 mW)
Present voltage:        16727 mV

After disconnecting AC adapter, acpiconf shows the battery is discharging, but 
remaining capacity, time and rates does not change:

tlhscd@arsenic:~ $ sysctl hw.acpi.acline
hw.acpi.acline: 0

tlhscd@arsenic:~ $ acpiconf -i batt
Design capacity:        4240 mAh
Last full capacity:     4240 mAh
Technology:             secondary (rechargeable)
Design voltage:         14400 mV
Capacity (warn):        212 mAh
Capacity (low):         43 mAh
Low/warn granularity:   100 mAh
Warn/full granularity:  100 mAh
Model number:           Primary
Serial number:          11436 2010/03/05
Type:                   LIon
OEM info:               Hewlett-Packard
State:                  discharging 
Remaining capacity:     100%
Remaining time:         1:13
Present rate:           3450 mA (57756 mW)
Present voltage:        16741 mV

Reconnecting AC adapter back does not change computer state - acpiconf shows 
the same message, hw.acpi.acline is still 0.
>How-To-Repeat:
Boot machine with AC adapter connected, login to system, disconnect and 
reconnect AC adapter.

The above is observed on HP nx7300 laptop with those settings in rc.conf:
performance_cx_lowest="HIGH"
economy_cx_lowest="LOW"

Setting debug.acpi.max_tasks as temporary fix like in kern/160838 does not work 
for me.

As far as I remember - in 8.2-STABLE all worked as expected.
>Fix:


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