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Date:      Thu, 18 Aug 2016 10:46:09 +0300
From:      Konstantin Belousov <kostikbel@gmail.com>
To:        am_dxer@fastmail.fm
Cc:        freebsd-acpi@freebsd.org
Subject:   Re: Problems with CPU throttling on HP 15-n066us laptop
Message-ID:  <20160818074609.GV83214@kib.kiev.ua>
In-Reply-To: <1471488612.2196853.698646081.0844D23B@webmail.messagingengine.com>
References:  <1471488612.2196853.698646081.0844D23B@webmail.messagingengine.com>

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On Wed, Aug 17, 2016 at 10:50:12PM -0400, am_dxer@fastmail.fm wrote:
> Hello,
> I purchased a new laptop for FreeBSD and am having some problems with
> CPU throttling. This laptop has an aMD a10-5745m processor. I cannot
> start powerd and the frequency levels in dev.cpu are absent. I tried
> with 11 and when that didn't work, I upgraded to Current. The laptop is
> running very hot and the fans are often running at a high speed so I
> think the cpu is running near full speed.  This is the only issue I am
> having in general use of the laptop. I will include the url for my asl
> below as well as the output of dmesg after boot -v and sysctl hw.acpi. I
> noticed messages like "acpi_ec0: EcCommand: no response to 0x84" near
> the bottom of the dmesg but honestly don't know enough about acpi to say
> whether this could be causing the problem. I tried Googling the error
> and found people who seemed to be having trouble with temperature
> readings and battery status. For me, the battery status is working fine
> when I check it via acpiconf although I did notice some unusual
> temperature readings in the dmesg output. There are some other
> temperature readings that appear in sysctl but I would have to study
> them more during a work session to see if they remain reasonable. Thanks
> in advance for any help.
> 
> 
> asl url: http://pasted.co/5770b687
> 
> boot-v output: http://pasted.co/c8e9fb89
> 
> hw.acpi output: http://pasted.co/cc611266

It is more useful to show sysctl dev.cpu.  I suspect your bios
reports C-states in a way which we do not parse properly.

I am not aware of AMD-specific analog for the Intel' document 'Processor
Vendor-Specific ACPI Interface Specification'. If somebody has a pointer
to AMD version and wants to test, I am willing to code that.



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