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Date:      Tue, 4 Sep 2018 17:41:04 -0700
From:      Cy Schubert <Cy.Schubert@cschubert.com>
To:        "lev@FreeBSD.org" <lev@FreeBSD.org>,  FreeBSD Current <freebsd-current@freebsd.org>,  "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>
Subject:   RE: Celeron J3160 with enabled Turbo mode stays at 480MHz(lowestsetting) forever and can not lower frequency without Tuebo mod
Message-ID:  <20180905004150.142101109@spqr.komquats.com>

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Powers s/b powers (autocorrect).

---
Sent using a tiny phone keyboard.
Apologies for any typos and autocorrect.
Also, this old phone only supports top post. Apologies.

Cy Schubert
<Cy.Schubert@cschubert.com> or <cy@freebsd.org>
The need of the many outweighs the greed of the few.
---

-----Original Message-----
From: Cy Schubert
Sent: 04/09/2018 17:15
To: lev@FreeBSD.org; FreeBSD Current; freebsd-hackers@freebsd.org
Subject: RE: Celeron J3160 with enabled Turbo mode stays at 480MHz(lowestse=
tting) forever and can not lower frequency without Tuebo mode

Are you running powers?

Do you use c-states?

What happens if you boot in (instead of switch to) turbo mode?

---
Sent using a tiny phone keyboard.
Apologies for any typos and autocorrect.
Also, this old phone only supports top post. Apologies.

Cy Schubert
<Cy.Schubert@cschubert.com> or <cy@freebsd.org>
The need of the many outweighs the greed of the few.
---

-----Original Message-----
From: Lev Serebryakov
Sent: 04/09/2018 13:50
To: FreeBSD Current; freebsd-hackers@freebsd.org
Subject: Celeron J3160 with enabled Turbo mode stays at 480MHz (lowestsetti=
ng) forever and can not lower frequency without Tuebo mode

Hello FreeBSD,

  I'm installing latest 12-ALPHA4 on new MiniPC with Celeron J3160 CPU. It
 is 1.6GHz CPU with Turbo up to 2.somethingGHz.

  If I enable Turbo mode, after booting to FreeBSD it locks at 480MHz
 according to dev.cpu.0.freq, and simple "openssl" test confirms it.

  If I disable Turbo mode, after booting to FreeBSD it locks at 1600MHz eve=
n
 if powerd is running.

  It looks like some bug in interaction between cpufreq and Turbo mode of
 this CPU.

--=20
Best regards,
 Lev                          mailto:lev@FreeBSD.org

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