powernowd

Amy M amymom at hawaiilinux.us
Wed Jan 5 18:52:28 UTC 2005


I ran powernowd in my notebook (Athlon XP-M), and everything went OK.  
So far, powernowd seems to be working better than cpuspeed; the machine 
is cooler when idle but runs faster at battery mode.

Thanks everyone for the help.  This is really a great place!!!


Jonathan Berry wrote:

>On Mon, 3 Jan 2005 23:44:30 -0600 (CST), Satish Balay <balay at fastmail.fm> wrote:
>  
>
>>On Mon, 3 Jan 2005, Jonathan Berry wrote:
>>    
>>
>>>On Mon, 03 Jan 2005 19:24:40 -1000, Amy M <amymom at hawaiilinux.us> wrote:
>>>      
>>>
>>>>Someone mentioned powernowd.  It did not work on my Athlon XP system:
>>>>
>>>>powernowd: PowerNow Daemon v0.90, (c) 2003-2004 John Clemens
>>>>powernowd: Found 1 cpu:
>>>>Couldn't open file: No such file or directory
>>>>Couldn't open file: No such file or directory
>>>>Couldn't open file: No such file or directory
>>>>couldn't open govn's file for writing: No such file or directory
>>>>Couldn't get per-cpu data: Illegal seek
>>>>PowerNowd encountered and error and could not start.
>>>>        
>>>>
>>>I'm guessing that you have ACPI turned off.  You need ACPI and the
>>>files in /sys/devices/system/cpu/CPU0/cpufreq/ to use powernowd.
>>>      
>>>
>>Nope - this is not true. cpuspeed/powernowd work with APM (on a P-M
>>laptop)
>>    
>>
>
>Okay, I jumped the gun.  It is sysfs and the cpufreq module that are
>needed.  It is still probably the case that the directory I mentioned
>is not populated.  Probably either the powernow-k7 or powernow-k8
>module needs to be loaded.  Most likely the k7 module.
>
>  
>
>>Are you sure you have a mobile CPU - and not a desktop CPU (in a
>>laptop shell)?
>>    
>>
>
>Or more directly, does the CPU support frequency scaling?
>
>  
>
>>What does 'cat /proc/cpuinfo' say?
>>
>>Satish
>>    
>>
>
>Jonathan
>
>  
>




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