With Knoppix my laptop is running over 60 degrees Celsius. With some other distros I've used (Ubuntu, Kanotix), powernowd is enabled by default. It lowers the CPU temperature by about 15 degrees.

I can install powernowd to Knoppix (apt-get install powernowd), but it won't run. As root, I execute the following command and get these errors:

root@x31:~# /usr/sbin/powernowd
powernowd: PowerNow Daemon v0.97, (c) 2003-2006 John Clemens
powernowd: Found 1 scalable unit: -- 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.

Apparently the problem is that Knoppix has no file
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq

Has anybody found a fix for this?