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I have tried the following from shell:

cat scaling_governor
userspace

cat scaling_available_frequencies
3326000 3325000 3192000 3059000 2926000 2793000 2660000 2527000 2394000 2261000 2128000   1995000 1862000 1729000 1596000 

echo 2793000 > scaling_setspeed
bash: scaling_setspeed: Permission denied

sudo echo 2793000 > scaling_setspeed
bash: scaling_setspeed: Permission denied

echo 2793000 | sudo tee scaling_setspeed
bash: scaling_setspeed: Permission denied

I am not able to understand why this is occuring. Any help would be greatly appreciated. Thanks!

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migrated from stackoverflow.com Jan 13 '13 at 12:51

This question came from our site for professional and enthusiast programmers.

1  
man cpufreq-set – Paul R Jan 13 '13 at 8:54
up vote 1 down vote accepted

Some processors/architectures doesn't allow this.

If it's allowed, kernel must be properly configured and/or appropriate modules must be loaded.

Take a look at this...

http://www.thinkwiki.org/wiki/How_to_make_use_of_Dynamic_Frequency_Scaling

Hope this helps...

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