Fix issue with battery status update on HP Elitebook 8440p

[Juris Kaminskis]

Hi,

My battery status updates only after reboot, is there a way I can get the
fix for this?

My system is 10.0-RELEASE-p11 with acpi_hp and acpi_wmi loaded and
following dmesg:

dmesg |grep acpi
acpi0: <HPQOEM SLIC-MPC> on motherboard
acpi0: Power Button (fixed)
cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
cpu2: <ACPI CPU> on acpi0
cpu3: <ACPI CPU> on acpi0
hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on acpi0
atrtc0: <AT realtime clock> port 0x70-0x77 irq 8 on acpi0
attimer0: <AT timer> port 0x40-0x43,0x50-0x53 irq 0 on acpi0
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x408-0x40b on acpi0
acpi_ec0: <Embedded Controller: GPE 0x16> port 0x62,0x66 on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
acpi_wmi0: <ACPI-WMI mapping> on acpi0
acpi_hp0: <HP ACPI-WMI Mapping> on acpi_wmi0
acpi_hp0: WMI device does not provide the HP BIOS GUID
device_attach: acpi_hp0 attach returned 22
pcib5: <ACPI Host-PCI bridge> on acpi0
battery0: <ACPI Control Method Battery> on acpi0
battery1: <ACPI Control Method Battery> on acpi0
acpi_acad0: <AC Adapter> on acpi0
acpi_button0: <Sleep Button> on acpi0
acpi_lid0: <Control Method Lid Switch> on acpi0
acpi_wmi1: <ACPI-WMI mapping> on acpi0
acpi_hp1: <HP ACPI-WMI Mapping> on acpi_wmi1
acpi_hp1: HP event GUID detected, installing event handler
acpi_hp1: HP CMI GUID detected
acpi_tz0: <Thermal Zone> on acpi0
acpi_tz1: <Thermal Zone> on acpi0
acpi_tz2: <Thermal Zone> on acpi0
acpi_tz3: <Thermal Zone> on acpi0
acpi_tz4: <Thermal Zone> on acpi0
acpi_tz5: <Thermal Zone> on acpi0
acpi_tz6: <Thermal Zone> on acpi0
acpi_tz7: <Thermal Zone> on acpi0
acpi_tz8: <Thermal Zone> on acpi0
acpi_tz9: <Thermal Zone> on acpi0
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
ppc1: <Parallel port> port 0x378-0x37f,0x778-0x77a irq 5 on acpi0

and this is what I get from acpiconf -i0
Design capacity:    1551 mAh
Last full capacity:    1551 mAh
Technology:        secondary (rechargeable)
Design voltage:        10800 mV
Capacity (warn):    350 mAh
Capacity (low):        100 mAh
Low/warn granularity:    100 mAh
Warn/full granularity:    100 mAh
Model number:        Primary
Serial number:        16138 2011/04/16
Type:            LIon
OEM info:        Hewlett-Packard
State:            charging
Remaining capacity:    0%
Remaining time:        unknown
Present rate:        2334 mA (29378 mW)
Present voltage:    12587 mV


same problem described here:
https://forums.freebsd.org/threads/acpiconf-i0-doesnt-update-hp-laptop-battery.30485/

My BIOS is to the latest update from HP.

Is there a way I can contribute?
thanks
Juris