[ubuntu] doesn't recognize im on a laptop

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http://ubuntuforums.org – Under power mangagement there is no on battery power tab, therefor i have to guesstimate my batterys life. Is there a way to get this back? Laptop info: Toshiba Satellite L305D Ubuntu 10.04 (lucid) Kernel Linux 2.6.32-122-rtai GNOME 2.30.2 Hardware: Memory: 2.7 GiB Proces: AMD Sempron(tm) SI-42 Side note, the last release of Ubuntu didnt have this problem on my laptop. (Hardware)