For some reason I'm not able to enable processor power states (c1, c2 etc.)
for my Core 2 Duo. This is what I get::
cat /proc/acpi/processor/CPU1/info
processor id: 0
acpi id: 1
bus mastering control: no
power management: no
throttling control: no
limit interface: no
cat /proc/acpi/processor/CPU1/power
active state: C0
max_cstate: C8
bus master activity: 00000000
maximum allowed latency: 2000 usec
states:
"dmesg | grep -i power" also gives nothing. I have ACPI enabled in BIOS and
in kernel I have these set ("grep -i acpi .config | grep =y"):
CONFIG_ACPI=y
CONFIG_ACPI_PROCESSOR=y
CONFIG_ACPI_THERMAL=y
CONFIG_ACPI_EC=y
CONFIG_ACPI_POWER=y
CONFIG_ACPI_SYSTEM=y
CONFIG_X86_ACPI_CPUFREQ=y
CONFIG_PNPACPI=y
CONFIG_SATA_ACPI=y
I'm probably missing something crucial here. So how do I enable power
states or how do I debug the cause of them missing?
Kernel: 2.6.21.1
CPU: Intel E6400
Mobo: Asus P5B Deluxe (latest BIOS)
Distro: 64-bit Gentoo
I have EIST and ACPI2 enabled in BIOS.
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