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From: John Baldwin <jhb@freebsd.org>
To: Mario Lobo <lobo@bsd.com.br>
Cc: freebsd-hackers@freebsd.org, "Herbert J. Skuhra" <herbert@oslo.ath.cx>
Subject: Re: Gigabyte 970A-UD3P and hwpstate problem
Date: Thu, 06 Aug 2015 03:29:27 -0700
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On Wednesday, August 05, 2015 08:10:52 PM Mario Lobo wrote:
> On Wed, 05 Aug 2015 08:39:11 -0700
> John Baldwin <jhb@freebsd.org> wrote:
> > > > First check to see if there are any BIOS
> > > > options to control CPU throttling that are currently disabled.  
> > > 
> > > The only BIOS option that deals with throttling is Cool'n'Quiet,
> > > which is enabled.  
> > 
> > You might try checking if C1E is enabled.  Also, if you have done any
> > overclocking you might try disabling that.
> 
> C1E is enable and so is C6. But, good news!
> 
> [~]>dmesg -a | grep
> hwpstate hwpstate0: <Cool`n'Quiet 2.0> on cpu0 
> 
> dev.hwpstate.0.freq_settings: 3200/10235 2800/8393 2300/6221 1800/4471
> 1400/3135 dev.cpu.0.freq_levels: 3200/10235 2800/8393 2300/6221
> 1800/4471 1400/3135
> 
> There was an option in the BIOS called HPC, which stands for High Power
> Ccomputing (whatever that means) that, as soon as I disabled it,
> hwpstate showed up. I disabled acpi_throttle and the frequencies are
> still being throttled. 

Ok, that definitely sounds like the solution then.

-- 
John Baldwin