[ubuntu] Macbook 5,2 Ubuntu battery problem

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http://ubuntuforums.org – Hello, I've go 5,2 Macbook & using both OSX & Ubuntu. That was a bitt difficult for me toı install Ubuntu first time. But at the end, I've managed to installed 10.04 - 10.10 & 11.04 without any problem. But When installing, i needed to use acpi=off command. If I don't use it my screen went black. Anyway, after installation of Ubuntu(10.10), I've realized my battery doesnt' show. When I try System-Preferences-Power Management-General Always display as icon it only gives me nothing, just "preferences".Also I've realized if my battery offs, it won't sleep. Ubuntu can' (Hardware)