데비안etch 에서 powernowd 를 사용할려면??

/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq: No such file or directory
 
PowerNowd encountered and error and could not start.
Please make sure that:
 - You are running a v2.6.7 kernel or later
 - That you have sysfs mounted /sys
 - That you have the core cpufreq and cpufreq-userspace
   modules loaded into your kernel
 - That you have the cpufreq driver for your cpu loaded,
   (for example: powernow-k7), and that it works. Check
   'dmesg' for errors.
If all of the above are true, and you still have problems,
please email the author: <a href="mailto:clemej@alum.rpi.edu" rel="nofollow">clemej@alum.rpi.edu</a>

root@localhost# ls -al /sys/devices/system/cpu/cpu0/
 
total 0
drwxr-xr-x 3 root root    0 2007-01-04 13:52 .
drwxr-xr-x 3 root root    0 2007-01-04 22:52 ..
drwxr-xr-x 5 root root    0 2007-01-04 22:52 cache
-r-------- 1 root root 4096 2007-01-04 13:52 crash_notes
 
root@localhost#