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przemo@przemo-laptop:~$ xapm
No APM support in kernel

przemo@przemo-laptop:~$ sudo powernowd
Password:
powernowd: PowerNow Daemon v0.97, (c) 2003-2006 John Clemens
/sys/devices/system/cpu/cpu0/cpufreq/affected_cpus: No such file or directory
powernowd: err=2
powernowd: Found 2 scalable units:  -- 1 'CPU' per scalable unit
/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: clemej@alum.rpi.edu

przemo@przemo-laptop:~$ sudo modprobe powernow-k8

FATAL: Error inserting powernow_k8 (/lib/modules/2.6.20-16-generic/kernel/arch/x86_64/kernel/cpufreq/powernow-k8.ko): No such device