Public bug reported:

System information: HP Compaq 6715b, running latest Hardy as at Feb 25.
gnome-power-manager version 2.21.1-0ubuntu1

If I'm running on battery power when I log into my Gnome session, the
power icon shows that I'm on AC power with a fully charged battery. If I
plug in the AC it updates to "charging" and shows the correct charge
percentage. When I unplug the AC it correctly shows that I'm on battery
power and and displays the correct charge and a reasonable remaining
time estimate.

However, only the status icon and tooltip seem to be wrong. Something is
detecting battery power when I log in since the LCD backlight is
adjusted automatically to dim down.

The system knows about two batteries, but only one is present. The
following information was captured while running on battery power:

$ for x in `find /proc/acpi/ac_adapter /proc/acpi/battery -type f`; do
echo; echo "$x:"; cat $x; done

/proc/acpi/ac_adapter/C1EB/state:
state:                   off-line

/proc/acpi/battery/C1EC/alarm:
present:                 no

/proc/acpi/battery/C1EC/state:
present:                 no

/proc/acpi/battery/C1EC/info:
present:                 no

/proc/acpi/battery/C1ED/alarm:
alarm:                   unsupported

/proc/acpi/battery/C1ED/state:
present:                 yes
capacity state:          ok
charging state:          discharging
present rate:            1522 mA
remaining capacity:      4064 mAh
present voltage:         11984 mV

/proc/acpi/battery/C1ED/info:
present:                 yes
design capacity:         4561 mAh
last full capacity:      4561 mAh
battery technology:      rechargeable
design voltage:          10800 mV
design capacity warning: 229 mAh
design capacity low:     46 mAh
capacity granularity 1:  100 mAh
capacity granularity 2:  100 mAh
model number:            Primary
serial number:           02763 2007/06/19
battery type:            LIon
OEM info:                Hewlett-Packard

** Affects: gnome-power-manager (Ubuntu)
     Importance: Undecided
         Status: New

-- 
Status icon shows AC power and full battery when logging in while on battery 
power
https://bugs.launchpad.net/bugs/195658
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