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ACPI Throttling in Ubuntu

I'm looking to throttle my cpu through the ACPI. I've read up on it, but I keep receiving permission denied statements. I have 8 available throttling states. Here are the outcomes of my atttempts: ...
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What service can hold CPU at lowest frequency possible when on battery load under Ubuntu?

When I'm running on battery even with "performance" frequency scaling governor, something regularly lowers CPU speed to it's lowest value. I don't really want that, my AC strip usually in another room ...