wrong energy reort on Lenovo X201s

[Hiroshi Miura]

Binary package hint: upower

gnome-power-manager report wrong percentage of energy after suspend/resume with power connection.
It caused because upowerd report wrong values.

Distribution: Ubuntu Natty (11.04) amd64
Laptop: Lenovo ThinkPad X201s

When suspneding on 30% of battrey with AC connection. and resume at >95% but report as 9%

miurahr@miurahr-note:~/projects/gnome/upower-0.9.9$ upower --monitor-detail
Monitoring activity from the power daemon. Press Ctrl+C to cancel.
[07:57:26.092] device changed: /org/freedesktop/UPower/devices/battery_BAT0
  native-path: /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:0a/PNP0C09:00/PNP0C0A:00/power_supply/BAT0
  vendor: SANYO
  model: 42T4835
  serial: 366
  power supply: yes
  updated: Fri May 13 07:57:25 2011 (1 seconds ago)
  has history: yes
  has statistics: yes
  battery
    present: yes
    rechargeable: yes
    state: discharging
    energy: 6.115 Wh
    energy-empty: 0 Wh
    energy-full: 66.48 Wh
    energy-full-design: 62.16 Wh
    energy-rate: 1.958 W
    voltage: 12.468 V
    time to empty: 3.1 hours
    percentage: 9.19826%
    capacity: 100%
    technology: lithium-ion
  History (charge):
    1305241045 9.198 discharging
    1305241015 9.234 discharging
    1305240985 9.269 discharging
    1305240955 9.305 discharging
  History (rate):
    1305241046 1.958 discharging
    1305241016 1.904 discharging
    1305240986 1.939 discharging
    1305240956 1.896 discharging

[07:57:56.093] device changed: /org/freedesktop/UPower/devices/battery_BAT0
  native-path: /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:0a/PNP0C09:00/PNP0C0A:00/power_supply/BAT0
  vendor: SANYO
  model: 42T4835
  serial: 366
  power supply: yes
  updated: Fri May 13 07:57:55 2011 (1 seconds ago)
  has history: yes
  has statistics: yes
  battery
    present: yes
    rechargeable: yes
    state: discharging
    energy: 6.091 Wh
    energy-empty: 0 Wh
    energy-full: 66.48 Wh
    energy-full-design: 62.16 Wh
    energy-rate: 2.019 W
    voltage: 12.455 V
    time to empty: 3.0 hours
    percentage: 9.16215%
    capacity: 100%
    technology: lithium-ion
  History (charge):
    1305241075 9.162 discharging
    1305241045 9.198 discharging
    1305241015 9.234 discharging
    1305240985 9.269 discharging
  History (rate):
    1305241076 2.019 discharging
    1305241046 1.958 discharging
    1305241016 1.904 discharging
    1305240986 1.939 discharging

^C
miurahr@miurahr-note:~/projects/gnome/upower-0.9.9$ upower --monitor-detail
0*@!$ shell 1-$ bash miurahr@miurahr-note 192.168.1.103 Menu:<F9>
 U Ubuntu 11.04 ^8kbps v40kbps 31! 4d22h 2.18 4x1.2GHz 3.5GB,75% 2011-05-13 07
  History (rate):
    1305241046 1.958 discharging
    1305241016 1.904 discharging
    1305240986 1.939 discharging
    1305240956 1.896 discharging

[07:57:56.093] device changed: /org/freedesktop/UPower/devices/battery_BAT0
  native-path: /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:0a/PNP0C09:00/PNP0C0A:00/power_supply/BAT0
  vendor: SANYO
  model: 42T4835
  serial: 366
  power supply: yes
  updated: Fri May 13 07:57:55 2011 (1 seconds ago)
  has history: yes
  has statistics: yes
  battery
    present: yes
    rechargeable: yes
    state: discharging
    energy: 6.091 Wh
    energy-empty: 0 Wh
    energy-full: 66.48 Wh
    energy-full-design: 62.16 Wh
    energy-rate: 2.019 W
    voltage: 12.455 V
    time to empty: 3.0 hours
    percentage: 9.16215%
    capacity: 100%
    technology: lithium-ion
  History (charge):
    1305241075 9.162 discharging
    1305241045 9.198 discharging
    1305241015 9.234 discharging
    1305240985 9.269 discharging
  History (rate):
    1305241076 2.019 discharging
    1305241046 1.958 discharging
    1305241016 1.904 discharging
    1305240986 1.939 discharging

Because Linux kernel report good values, it would be problem on upower.

miurahr@miurahr-note:~/projects/gnome/upower-0.9.9$ cat /proc/acpi/battery/BAT0/state
present: yes
capacity state: ok
charging state: discharging
present rate: 2022 mA
remaining capacity: 5860 mAh
present voltage: 12353 mV