[Regression] ACPI thermal not working HP Pavillion dv9207us

Hi,

at present acpi thermal gives what I think are default values and no variance 
in the temperature at all.

acpi0 is identified as:
<HPQOEM SLIC-MPC> on motherboard

The last known working version was Feb 22. At that time I stopped logging the 
temperature, so it's possible it was working afterwards.
The version currently in the kernel is:
$FreeBSD: src/sys/dev/acpica/acpi_thermal.c,v 1.64.2.4 2008/02/25 15:32:39 ume 
Exp $

Current output:
hw.acpi.thermal.tz0.temperature: 32.0C
hw.acpi.thermal.tz0.active: -1
hw.acpi.thermal.tz0.passive_cooling: 1
hw.acpi.thermal.tz0.thermal_flags: 0
hw.acpi.thermal.tz0._PSV: 80.0C
hw.acpi.thermal.tz0._HOT: -1
hw.acpi.thermal.tz0._CRT: 110.0C
hw.acpi.thermal.tz0._ACx: -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
hw.acpi.thermal.tz0._TC1: 2
hw.acpi.thermal.tz0._TC2: 3
hw.acpi.thermal.tz0._TSP: 50

When I had hw.acpi.thermal.tz0.user_override=1 set, the value was a constant 
28.0C.

Both values seem way too low. Also, the _PSV and _CRT values set in 
sysctl.conf(5) are not set as I had them set:
hw.acpi.thermal.tz0._PSV="75C"
hw.acpi.thermal.tz0._CRT="82C"

Before the lowest temperatures were around 40-50C and 55-65 when compiling 
large ports or world. At present it's compiling kdelibs, so I'd expect at 
least a 50C.

Anything wrong on my end or is this known/patches floating?
-- 
Mel
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