[Pkg-utopia-maintainers] Bug#601345: battery charge level utterly wrong

[Christophe TROESTLER]

I have the very same problem with kernel 2.6.38.2 from kernel.org.
Funnily the wrong percentage given by upower seems to be reported when
the real one is > 50%.

$ upower --dump
Device: /org/freedesktop/UPower/devices/line_power_AC
  native-path:          /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:02/PNP0C09:00/ACPI0003:00/power_supply/AC
  power supply:         yes
  updated:              Thu May 26 11:17:43 2011 (320 seconds ago)
  has history:          no
  has statistics:       no
  line-power
    online:             no

Device: /org/freedesktop/UPower/devices/battery_BAT0
  native-path:          /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:02/PNP0C09:00/PNP0C0A:00/power_supply/BAT0
  vendor:               SANYO
  model:                42T4710
  serial:               8352
  power supply:         yes
  updated:              Thu May 26 11:22:48 2011 (15 seconds ago)
  has history:          yes
  has statistics:       yes
  battery
    present:             yes
    rechargeable:        yes
    state:               discharging
    energy:              89.3217 Wh
    energy-empty:        0 Wh
    energy-full:         924.408 Wh
    energy-full-design:  103.496 Wh
    energy-rate:         24.2646 W
    voltage:             12.521 V
    time to empty:       3.7 hours
    percentage:          9.66258%
    capacity:            89.393%
    technology:          lithium-ion
  History (charge):
    1306401768  9.663   discharging
    1306401738  9.691   discharging
    1306401708  9.721   discharging
    1306401678  9.750   discharging
  History (rate):
    1306401770  24.265  discharging
    1306401739  25.153  discharging
    1306401710  24.742  discharging
    1306401679  25.019  discharging

Daemon:
  daemon-version:  0.9.10
  can-suspend:     yes
  can-hibernate    yes
  on-battery:      yes
  on-low-battery:  yes
  lid-is-closed:   no
  lid-is-present:  yes
  is-docked:       no


$ acpi -V
Battery 0: Discharging, 99%, 03:27:25 remaining
Battery 0: design capacity 9324 mAh, last full capacity 8328 mAh = 89%
Adapter 0: off-line
Thermal 0: ok, 47.0 degrees C
Thermal 0: trip point 0 switches to mode critical at temperature 98.0 degrees C
Thermal 0: trip point 1 switches to mode passive at temperature 127.5 degrees C
Cooling 0: LCD 4 of 15
Cooling 1: Processor 0 of 7
Cooling 2: Processor 0 of 7
Cooling 3: Processor 0 of 7
Cooling 4: Processor 0 of 7
Cooling 5: Processor 0 of 7
Cooling 6: Processor 0 of 7
Cooling 7: Processor 0 of 7
Cooling 8: Processor 0 of 7


$ cat /sys/class/power_supply/BAT0/charge_now 
8088000
$ cat /sys/class/power_supply/BAT0/charge_full
8328000