Re: intel_pstate vs acpi-cpufreq freq scale

After some discussion with Liquorix people (who are still not convinced by intel_pstate)
http://techpatterns.com/forums/viewtopic.php?p=12509#12509

I'm going to try out the new 'schedutils' option with acpi-cpufreq

See how it goes eh.

Regards,

Julian

On 16 January 2017 at 23:49, Julian Brooks <jbeezez@gmail.com> wrote:

Dear Luis,

Many thanks for your input and guidance here.

'Have you tried to see if this happens with debian's official kernel?'
Doh! Of course.
Yes I have now, and intel_pstate is active - yay.

Complete newb with any kind of kernel config/tweaking/rebuilding - need to do some reading-up.

Thanks again,

Julian

On 16 January 2017 at 15:03, Luis Felipe Tabera Alonso <luisfe@lftabera.es> wrote:
On lunes, 16 de enero de 2017 1:13:09 (CET) Julian Brooks wrote:
> Hi all,

Hi Julian,

> Fresh install of Sid, with
> liquorix 4.9-3 (2017-01-07) x86_64 kernel (for RT audio work).
> Have also installed linrunner's TLP.

Have you tried to see if this happens with debian's official kernel?

> My understanding is that the x230's Ivy Bridge processor should make use of
> intel_pstate for frequency scaling but I can't seem to load the kernel
> module at boot.

Is it a module? At least on debian kernels, intel_pstate is inside the kernel,
not as a separate module.

$ grep -i pstate config-4.8.0-2-amd64
CONFIG_X86_INTEL_PSTATE=y

however, on liquorix

$ grep -i pstate config-4.9.0-3.2-liquorix-amd64
# CONFIG_X86_INTEL_PSTATE is not set

So it seems that liquorix kernel has not compiled intel_pstate. So could try
to recompile it as a module for your running kernel of rebuild liquorix kernel
with intel_pstate support.

Luis

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