Comment 8 for bug 486695

I have an Acer Aspire 6930G and the problem is the same. But if you execute this command: cat /proc/acpi/battery/BAT1/state, it shows you that the battery is connected and also makes the battery indicator to update itself and show the correct power state. But the power scheme does not change, so you must manually change it to powersave. I am using Kubuntu 9.10 as my primary desktop.

It also happens in Ubuntu 9.10 with the gnome battery indicator (same notebook), but in Ubuntu, the system changes automatically to the new power scheme.

Under Opensuse 11.2 (same kernel version and in the same notebook) the battery indicator and power schemes work correctly.

Maybe when you do the cat /proc/acpi/battery/BAT1/state it makes an internal trigger to inform the applications about the real power state (it makes the battery indicator to show the state) but KDE does not change the power scheme.