Re: Re: P-States in Linux

On Wed, Sep 08, 2004 at 10:32:56AM -0000, Sreenidhi  BG wrote:
> Hello Robert, 
> 
> I tried the 2.6.8 kernel and it worked fine. I re-compiled the 2.6.8 kernel with Power Management enabled, and it must be enabled in BIOS as well. 
> I enabled the P-State driver in the kernel and force the P-State by echoing either 1 or 0 to the /proc/acpi/processor/performance proc entry. 
> echo -n 1 >> /proc/acpi/processor/performance 

Please do not use this deprecated and old interface. Use
/sys/devices/system/cpu/cpu0/cpufreq/ instead.

> But I observed that active State of the cpu will change to P0 or P1 only if the above command
> is executed twice. Dont know the reason.

Please re-test with the interface above, and check "dmesg" for any errors.

	Dominik


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