ACPI & battery issues

[Eitan Adler]

I see
ACPI Exception: AE_NO_HARDWARE_RESPONSE, Returned by Handler for
[EmbeddedControl] (20100331/evregion-588)
ACPI Error (psparse-0633): Method parse/execution failed
[\\_SB_.PCI0.LPCB.BAT1._BST] (Node 0xc6adba60),
AE_NO_HARDWARE_RESPONSE

repeatedly in dmesg

sysctl's relating to battery information is also slow:
% time sysctl hw.acpi.battery.state
hw.acpi.battery.state: 7
sysctl hw.acpi.battery.state  0.00s user 2.18s system 72% cpu 3.006 total

% time sysctl hw.acpi.battery
hw.acpi.battery.life: -1
hw.acpi.battery.time: -1
hw.acpi.battery.state: 7
hw.acpi.battery.units: 1
hw.acpi.battery.info_expire: 5
sysctl hw.acpi.battery  0.00s user 6.58s system 67% cpu 9.779 total

also note that the life and time are both negative one.

This is on a Lenovo G530 laptop.
-- 
Eitan Adler