Re: Problem with cpufreq and i5 since post 3.9.0

[David Woodfall]

On (28/12/13 01:50), Rafael J. Wysocki <rjw@xxxxxxxxxxxxx> put forth the proposition:
> CC: +Viresh and linux-pm
>
> On Saturday, December 28, 2013 12:09:01 AM David Woodfall wrote:
> > On (27/12/13 19:53), Dave Woodfall <dave@xxxxxxxxxxxxxx> put forth the proposition:
> > >On (27/12/13 20:44), Heinz Diehl <htd@xxxxxxxxxxxxxxxxx> put forth the proposition:
> > >>On 27.12.2013, David Woodfall wrote:
> > >>
> > >>>But any of the newer kernel versions I've tested only give me
> > >>>performance and powersave.
> > >>
> > >>I don't use any Fedora kernel, so I can't tell which governors are
> > >>enabled in those. You should check the value of "CONFIG_CPU_FREQ_GOV"
> > >>in the respective .config file for your installed kernel.
> > >>
> > >>In short: It seems that only "performance" and "powersave" are
> > >>compiled in.
> > >
> > >No, I used the same .config in all versions that I tested. I've also
> > >tried setting them as modules rather than built-in. This is the stock
> > >slackware .config:
> > >
> > >CONFIG_CPU_FREQ=y
> > >CONFIG_CPU_FREQ_TABLE=m
> > >CONFIG_CPU_FREQ_GOV_COMMON=y
> > >CONFIG_CPU_FREQ_STAT=m
> > >CONFIG_CPU_FREQ_STAT_DETAILS=y
> > ># CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
> > >CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
> > ># CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
> > ># CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
> > >CONFIG_CPU_FREQ_GOV_PERFORMANCE=m
> > >CONFIG_CPU_FREQ_GOV_POWERSAVE=m
> > >CONFIG_CPU_FREQ_GOV_USERSPACE=y
> > >CONFIG_CPU_FREQ_GOV_ONDEMAND=m
> > >CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m
> > >
> > >And modprobing any governor module does not change the output of
> > >scaling_available_governors.
> > >
> > >-Dave
> >
> > I'm also experiencing this with a Intel G640 dual core machine.
> > Exactly the same effect.
>
> Do you have CONFIG_X86_INTEL_PSTATE set?

I did and unsetting it solves the problem.

Thanks for that pointer.

-Dave


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