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Date:      Fri, 19 Oct 2012 16:27:11 +0300
From:      Andriy Gapon <avg@FreeBSD.org>
To:        Derek Kulinski <takeda@takeda.tk>
Cc:        freebsd-stable@FreeBSD.org
Subject:   Re: Problem reading vitals from Gigabyte H77-DH3H
Message-ID:  <5081552F.2050303@FreeBSD.org>
In-Reply-To: <20121017205147.GB36106@chinatsu.takeda.tk>
References:  <1286515493.20121017131543@takeda.tk> <507F1761.1010202@FreeBSD.org> <20121017205147.GB36106@chinatsu.takeda.tk>

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on 17/10/2012 23:51 Derek Kulinski said the following:
> On Wed, Oct 17, 2012 at 11:38:57PM +0300, Andriy Gapon wrote:
>> I've found that on quite a few modern systems the ACPI platform advertises some
>> useless thermal zones, which always return some hardcoded temperatures.
>> E.g. I have Asus P8Z77-M PRO near me and it also reports two thermal zones.
>> Looking at DSDT (acpidump -dt) I see that the temperatures are hardcoded.
>>
>> It seems that your motherboard has an ITE Super I/O with hardware monitoring
>> function.  I am not sure which model though...
>> Your best bet would be it(4) driver, but it is not committed yet.
>> If you are into some mild hacking (applying patches, building custom kernel),
>> then I can point you to the patches.
>> Although I can not give a firm guarantee that the driver supports your HWM chip,
>> since I don't know the model.
> 
> I'm open to experimenting. It's kind of important to me, because I recently had heating issue (that I hopefully fixed) and I wasn't aware of problems until my system started freezing. I was fooled by those values thinking everything was ok.

Here is a (quite large) patch: http://people.freebsd.org/~avg/sensors.diff
Please note that if affects both kernel and userland code.
Read it(4) manual page after upgrading.  Note that you will need to add some
entries to /boot/device.hints (unless your upgrade procedure would automatically
merge the file).

>> [...]
>>
>> These tools from ports are very outdated and thus do not support new hardware.
> 
> I never used them before since on my old box hw.acpi.thermal worked fine.
> Is there anything in ports that you would recommend?

No.  I do not know of any good userland tool for recent hardware.

-- 
Andriy Gapon



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