Hello, with recent powertop, I could confirm that my T61 uses the C6 processor state only in battery mode: (Kernel 2.6.25) AC: Your CPU supports the following C-states : C1 C2 C3 C4 C5 C6 Your BIOS reports the following C-states : C1 C2 C3 Battery: Your CPU supports the following C-states : C1 C2 C3 C4 C5 C6 Your BIOS reports the following C-states : C1 C2 C6 Since the notebook runs quite a bit cooler, and thus less noisy (fan) in battery mode, I would like to have it use that C6 state also in AC mode. Is it possible, maybe with some slight tweaks, to convice the kernel (or BIOS?) to also use that C6 state when in AC mode? Thanks, Daniel -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html