Joe Harvell wrote:I forget what the output from modprobe said. But I had cpufreq.debug=7. Here are the logs:
Here are my questions:
1) For P states, which cpufreq driver should I be using? I've heard speedstep-centrino is deprecated (but only some aspects of it) that are
Right.
being moved into acpi-cpufreq. But I can't get acpi-cpufreq to load in my kernel version. Also, I would have thought speedstep-ich would be
Are you sure? Are you getting error messages?
Okay. I understand the distinction between what the processor supports and what the motherboard exports via the ACPI tables. I do still want to know what C states the E6600 supports. Does anyone know? Also, I've heard the it's possible to modify the DSDT on boards to add interfaces to processor features that the board does not provide. Of course this is a dead end if E6600 doesn't support these low power states to begin with. Assuming it does, does anyone know if it's possible to get them working on the Asus P5B Deluxe?
2) What kind of support for C1-C3 does the Conroe have? The ACPI spec says C2 and C3 require chipset support on the motherboard. Does P965 have that. Does it matter between boards (e.g. P5B)?
The kernel will only use C2 and C3 if the motherboard exports support for it through ACPI. Most desktop boards don't, this is normally only found on laptops.