The same issue happens in Hardy and I think this bug is present since
2006 (see also bug #159407, opened on 2007, and marked as invalid
because of lacking of info).
1) I start the PC with battery plugged in:
"
ma...@dominus:/proc/acpi/ac_adapter/ACAD$ cat state
state: off-line
ma...@dominus:/proc/acpi/ac_adapter/ACAD$ cat ../../battery/BAT1/state
present: yes
capacity state: ok
charging state: discharging
present rate: 1574 mA
remaining capacity: 879 mAh
present voltage: 10730 mV
"
2) I hibernate the PC
3) I unplug the battery and I plug-in in the ac-power
4) I startup the PC
5)
"
ma...@dominus:/proc/acpi/ac_adapter/ACAD$ cat ../../battery/BAT1/state
present: yes
capacity state: ok
charging state: charged
present rate: 0 mA
remaining capacity: 0 mAh
present voltage: 0 mV
ma...@dominus:/proc/acpi/ac_adapter/ACAD$ cat state
state: on-line
"
You will see that at last the ac-power is recognized as on-line (and this is
ok) but also the battery is recognized as present (and this is not ok).
The gnome-power-manger plugin still shows battery icon even if, if you move the
mouse cursor over the icon, you can read that the PC is running with ac-power
and the battery state cannot be read at that moment.
The same issue, but obviously in the opposite way, happens if you start,
at first, the PC with ac-power and then, after hibernation, you plug-in
the battery and you unplug ac-power.
** Changed in: gnome-power-manager (Ubuntu)
Status: Invalid => New
--
After hibernate: Battery not correctly recognized/displayed in Panel applet
https://bugs.launchpad.net/bugs/73750
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