CPUFREQ on a Thinkpad Yoga i7 in a new Fedora 20 install

Heinz Diehl htd at fritha.org
Sun May 11 08:39:17 UTC 2014


On 10.05.2014, Alan E. Davis wrote: 

> The biggest question for me is this: is it a kernel issue that I am only
> seeing two governors, when other OSs see 4?

First: I do not run Fedora kernels, and therefore I don't know how
they are configured. 

The "problem" you describe is most probably caused by the Fedora 
kernel using Intel pstates. You can "fix" that by recompiling your 
kernel with CONFIG_X86_INTEL_PSTATE disabled.

Intel pstate use its own (internal) governor, therefore, some of the
other scaling drivers aren't available.





More information about the users mailing list