ACPI problems on ACER Aspire 5520

[Николай Тычина]

Hi all,

I have acer aspire 5520 laptop with FreeBSD installed.
There is permanent error in dmesg...

acpi_ec0: EcRead: failed waiting to get data
ACPI Exception (evregion-0529): AE_NO_HARDWARE_RESPONSE, Returned by Handler
for [EmbeddedControl] [20070320]
ACPI Error (psparse-0626): Method parse/execution failed [\\_TZ_.THRM._TMP]
(Node 0xc5a5fb80), AE_NO_HARDWARE_RESPONSE

...and FreeBSD can't tell me battery remaining time, capacity etc:

# acpiconf -i batt
Design capacity:        4800 mAh
Last full capacity:     4123 mAh
Technology:             secondary (rechargeable)
Design voltage:         14800 mV
Capacity (warn):        240 mAh
Capacity (low):         144 mAh
Low/warn granularity:   264 mAh
Warn/full granularity:  3780 mAh
Model number:           Primary
Serial number:
Type:                   Lion
OEM info:               ACER
State:                  high
Remaining capacity:     100%
Remaining time:         unknown
Present rate:           0 mA
Voltage:                16499 mV


How can i fix it?

Thanks in advance,

Nikolay