Comment 7 for bug 838543

Also affects me, both on 11.04 and 11.10 (clean install) but not on previous versions. Running on a Dell E4300. Output of upower --dump is at the bottom of this email.

Interestingly, I've occasionally seen the default gnome-shell battery indicator applet show the existence of TWO batteries, one of which has 0% and the other 100% (even when on AC power). After a short while (e.g. enough restarts or access to AC), this resolves itself and I only see one battery, showing my actual amount of power.

Not sure if it is related, but I also get two batteries listed in /proc/acpi/battery even though my system only has one. I haven't seen what happens to those BAT* folders when things are on the fritz, but the contents of those files are also included at the bottom and look innocuous when things are running well.

Device: /org/freedesktop/UPower/devices/line_power_AC
  native-path: /sys/devices/LNXSYSTM:00/device:00/ACPI0003:00/power_supply/AC
  power supply: yes
  updated: Fri Oct 21 12:37:32 2011 (1429 seconds ago)
  has history: no
  has statistics: no
  line-power
    online: yes

Device: /org/freedesktop/UPower/devices/battery_BAT0
  native-path: /sys/devices/LNXSYSTM:00/device:00/PNP0C0A:00/power_supply/BAT0
  vendor: SMP
  model: DELL FM33889
  serial: 2169
  power supply: yes
  updated: Fri Oct 21 12:58:41 2011 (160 seconds ago)
  has history: yes
  has statistics: yes
  battery
    present: yes
    rechargeable: yes
    state: fully-charged
    energy: 57.72 Wh
    energy-empty: 0 Wh
    energy-full: 57.72 Wh
    energy-full-design: 57.72 Wh
    energy-rate: 0.0111 W
    voltage: 12.482 V
    percentage: 100%
    capacity: 66.5962%
    technology: lithium-ion

Daemon:
  daemon-version: 0.9.13
  can-suspend: yes
  can-hibernate yes
  on-battery: no
  on-low-battery: no
  lid-is-closed: no
  lid-is-present: yes
  is-docked: yes

BAT0/alarm
alarm: unsupported
-------------

BAT0/info
present: yes
design capacity: 5200 mAh
last full capacity: 3463 mAh
battery technology: rechargeable
design voltage: 11100 mV
design capacity warning: 520 mAh
design capacity low: 157 mAh
cycle count: 0
capacity granularity 1: 52 mAh
capacity granularity 2: 52 mAh
model number: DELL FM33889
serial number: 2169
battery type: LION
OEM info: SMP
-------------

BAT0/state
present: yes
capacity state: ok
charging state: charged
present rate: 1 mA
remaining capacity: 5200 mAh
present voltage: 12482 mV
-------------

BAT1/alarm
present: no
-------------

BAT1/info
present: no
-------------

BAT1/state
present: no
-------------