ACPI woes on HP 2133 Mininote

[Paolo Pisati]

Dear guys,

i've some problems with ACPI in FreeBSD and my HP 2133 Mininote.

Basically, when i try to query the ACPI about the laptop's temperature i get this:

piso at nanobook:~ >sysctl -a | grep temp
net.inet6.ip6.use_tempaddr: 0
net.inet6.ip6.temppltime: 86400
net.inet6.ip6.tempvltime: 604800
net.inet6.ip6.prefer_tempaddr: 0
hw.acpi.thermal.tz0.temperature: 58.0C
^C^C^C^C^C^C^C^C^C^C^C             <---- here the console is stuck
ACPI Exception (exutils-0382): AE_TIME, Could not acquire
Global Lock [20070320]
ACPI Exception (exutils-0382): AE_TIME, Could not acquire Global Lock [20070320]

Moreover after a bit of usage my laptop become so hot that it's impossible to hold.
Here is the a dmesg snippet about an ACPI error i get at boot time:

ACPI Error (exmutex-0479): Cannot release Mutex [_GL_], not acquired [20070320]
ACPI Error (psparse-0626): Method parse/execution failed [\\_SB_.PCI0.SBRG.SMAB] (Node 0xc48f2800), AE_AML_MUTEX_NOT_ACQUIRED
ACPI Error (psparse-0626): Method parse/execution failed [\\_SB_.PCI0.ACEL.AJAL] (Node 0xc48e8560), AE_AML_MUTEX_NOT_ACQUIRED
ACPI Error (psparse-0626): Method parse/execution failed [\\_SB_.PCI0.AC0_._PSR] (Node 0xc48f04c0), AE_AML_MUTEX_NOT_ACQUIRED

For full verbose dmesg see here: http://people.freebsd.org/~piso/hp2133-dmesg-verbose.txt
and for more info about my laptop see here: http://gentoo-wiki.com/HARDWARE_HP_2133_Mini-Note_PC 
-- 
bye,
P.