DellInspironDuo_OpenSuSE12.1Gnome3_PlugInOrRemovePowerCable_AC

Hello Forum-Users,

I have a problem with pluging in or removing the power cable from the AC.

PC: Dell Inspirion Duo (1090)
OS: OpenSuSE 12.1 Gnome3
Kernel:
DellInspirionDuo:~ # uname -r
3.1.9-1.4-desktop

starting point:
OpenSuSE is up and running, all works fine
a) power cable is connected to AC
b) power cable is NOT connected to AC

problem:
a) If I plug out / remove the power cable form the AC my Gnome Desktop crashes and freeze on console; no input method works.
Only thing which i can do is pressing and holding the power button to turn the netbook off.
Restart OpenSuse…

b) If I plug in the power cable form the AC my Gnome Desktop crashes and freeze on console; no input method works.
Only thing which i can do is pressing and holding the power button to turn the netbook off.
Restart OpenSuSE…

I think the ACPI settings are not the right one for this netbook.

Is there any solution for this problem known?