https://bugzilla.kernel.org/show_bug.cgi?id=54241
URL: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=70105
0
Summary: Wrong battery capacity values on HP Folio 13-2000
Product: ACPI
Version: 2.5
Kernel Version: 3.7.9
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Battery
AssignedTo: acpi_power-batt...@kernel-bugs.osdl.org
ReportedBy: pub...@stefan-nagy.at
Regression: No
Created an attachment (id=93831)
--> (https://bugzilla.kernel.org/attachment.cgi?id=93831)
dmesg log (kernel 3.7.9)
While my BIOS/UEFI reports a battery charge capacity of 92% for my notebook-
battery, the kernel still reports a charge capacity of 100%.
I checked the situation in Windows 7 over the last few days and I don't see
the problem there. I can use the 'HP Support Assistant' in Windows to
check the battery capacity and status – it seems to be the same tool as
in the 'HP UEFI Support Environment'. The value 'Current' (in mAh)
accords to the values (in percentage of 'Full Charge Capacity') reported
by Windows. This is why I don't think that this is a firmware bug.
I'll add the information provided by UEFI (1.) and the kernel (2.).
(1.) Information provided by the HP UEFI Support Environment:
Charge Capacity: 92%
Warranty Type: 1 year
Cycle Count: 187
Manufacturer: 13-17
Battery Age: 391 days
Serial Number: 01317 01/24/2012
Temperature: 36 °C
Design Capacity: 5400 mAh
Full Charge Capacity: 5020 mAh
Remaining Capacity: 2499 mAh
Current: 1797 mA
Battery Status: OK(1)
FAILURE ID: OK
Terminal Voltage: 11143 mV
Design Voltage: 11100 mV
Cell Voltage 1: 3710 mV
Cell Voltage 2: 3735 mV
Cell Voltage 3: 3700 mV
Cell Voltage 4: 0 mV
Status: 00C0
AC Power: No
CT Number: 6CLFH02BJ2E08M
(2.) Information provided by the kernel:
POWER_SUPPLY_NAME=BAT1
POWER_SUPPLY_STATUS=Discharging
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_TECHNOLOGY=Unknown
POWER_SUPPLY_CYCLE_COUNT=0
POWER_SUPPLY_VOLTAGE_MIN_DESIGN=11100000
POWER_SUPPLY_VOLTAGE_NOW=11854000
POWER_SUPPLY_POWER_NOW=11877000
POWER_SUPPLY_ENERGY_FULL_DESIGN=59940000
POWER_SUPPLY_ENERGY_FULL=59940000
POWER_SUPPLY_ENERGY_NOW=49750000
POWER_SUPPLY_CAPACITY=82
POWER_SUPPLY_MODEL_NAME=Venturi
POWER_SUPPLY_MANUFACTURER=13-17
POWER_SUPPLY_SERIAL_NUMBER=01317 01/24/2012
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