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.
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