[ltp] missing C4 power state on core duo (x60s)

[Kevin O'Brien]

Hello,
When I look at /proc/acpi/processors/CPU*/power I only see ACPI power states
C1, C2 and C3. According to intel documentation the core duo can enter C4 as
well.

Since going into deeper sleep states is what caused the high pitch noise in
core duos, I am worried than the 1.06 BIOS solved the whine problem by
disabling C4.

Does anyone have the C4 state in their x60(s) and if so what version is your
BIOS?

Thanks,
Kevin
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