[ltp] powernowd and KLaptop

[Roland Bitterli]

Hi Moritz

hey you seem to have a lot of problems with KDE, you should maybe change 
the windowmanager ;-)

> Under KDE I can select three profiles in the KLaptop menue, and they seem to 
> fix the cpu freq at: 
> powersave: 500 MHz
> userspace: 1500 MHz
> performance: 1500 MHz (whats the difference to userspace btw?)


The difference between userspace and performance governor is that with 
userspace you can fix the frequency "by hand" to whatever value you want 
by a simple  "echo your_freq > 
/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq" or using some 
scaling userspace progs (e.g. gtk-cpuspeedy).
Performance means simply maximum frequency.

In fact /sys/devices/system/cpu/cpu0/cpufreq/ contains quite a lot of 
useful information about the scaling possibilities on your system.

cheers
roland

Moritz Karbach wrote:
> Hi,
> 
> I just monitored how powernowd works, and it's doing well. The CPU frequency 
> drops and raises in 100MHz steps according to the cpu load. But only, if KDE 
> is not running!
> 
> Under KDE I can select three profiles in the KLaptop menue, and they seem to 
> fix the cpu freq at: 
> powersave: 500 MHz
> userspace: 1500 MHz
> performance: 1500 MHz (whats the difference to userspace btw?)
> 
> powernowd, although still running, doesn't have any effect any more. No smooth 
> cpu freq changing...
> 
> Cheers,
> 
> - Moritz