Re: [3.14-rc3] possible regression Haswell runs only at 770Mhz with powersave governor

[Dirk Brandewie]

On 02/20/2014 07:01 AM, Borislav Petkov wrote:
> Add lists to CC.
>
> On Thu, Feb 20, 2014 at 03:32:36PM +0100, Otto Meier wrote:
> > Hello,
> >
> > My System which runs with older kernels up to 3.13.3
> > fine on my i3-4330 with 3.5 Ghz and governor powersave.
> > and pstate driver.
> >
> > With kernel 3.14-rc3 and Governor powersave it runs
> > only at 770Mhz and never switches to higher Freq. on load.
> > Even compiling a kernel with make -j4   does not change freq.

commit fcb6a15c2e7e76d493e6f91ea889ab40e1c643a4 seems to be the culprit

> > With governor performance  it switches to 3.5 Ghz and stays
> > there.
> >
> > Any Idea how to fix this?

Greg KH is seeing the same thing on his Haswell system.  I am trying
to figure what went south.

https://lkml.org/lkml/2014/2/19/626


Can you send me the .config for the broken kernel also the output of gcc -v



> > Best regards

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