From: James <bjlockie@lockie.ca>
To: lm-sensors@vger.kernel.org
Subject: Re: [lm-sensors] ASRock 970 Extreme3
Date: Mon, 21 May 2012 20:07:01 +0000 [thread overview]
Message-ID: <4FBAA065.2070208@lockie.ca> (raw)
In-Reply-To: <4FBA4711.3090609@lockie.ca>
On 05/21/12 14:11, Guenter Roeck wrote:
> On Mon, 2012-05-21 at 09:45 -0400, James wrote:
>> I use the nct6776-isa-0290
>> Adapter: ISA adapter
>>
>> I have 3 fans:
>> 1. The CPU fan (about 3300 RPM)
>> 2. The rear case fan (about 1050 RPM)
>> 3. The front case fan (about 1350 RPM)
>>
>> Do the fans in Power Supplies typically get monitored?
>>
>> I have 6 fan connectors:
>> 1. Chassis fan connector (#12 on the motherboard)
>> 2. Chassis fan connector (#15 on the motherboard)
>> 3. Chassis fan connector (#2 on the motherboard)
>> 1. CPU fan connector (#6 on the motherboard)
>> 2. CPU fan connector (#5 on the motherboard)
>> 1. Power fan connector (#10 on the motherboard)
>>
>> Maybe someone can see a pattern.
>>
>> 1. I plugged the rear case fan in #12
>> fan1 was 1060 RPM (the rear case fan probably)
>> fan2 was 3300 RPM (the CPU fan probably)
>> other fans reported 0 RPMs
>>
>> 2. I plugged the rear case fan in #2
>> all fans reported 0 RPM
>> other fans reported 0 RPMs
>>
>> 3. I plugged the rear case fan in #12 and the front case fan in #15.
>> fan1 was 1053 RPM (the rear case fan probably)
>> fan2 was 3316 (the CPU fan probably)
>> other fans reported 0 RPMs
>>
>> 4. I plugged the rear case fan in #10 and the front case fan in #12.
>> fan1 was 1384 (the front case fan probably)
>> other fans reported 0 RPMs
>
> Problem is that ASRock uses a GPIO based multiplexer to connect the
> fans. So there is no 1:1 relationship between fans connectors and fan
> attributes. The GPIO pins used vary from board to board.
>
> There are some possibilities to support this, such as to modify the
> fancontrol script to also support setting gpio pins (if there is a gpio
> driver for the given HW), or to somehow implement the necessary support
> in the kernel. But those are all not really good solutions, and there
> are some questions if it can be made to work reliably in the first
> place. The AIDA64 folks tried to implement it but gave up (see
> http://forums.aida64.com/index.php?/topic/386-asrocks-fan-controller-sensor-trouble/), which is not a good sign.
>
> Guenter
>
>
>
It looks like I can get two fans.
So can I assume that there are two sensors for the 6 connectors and 3 are multiplexed for each sensor?
Is it correct that there are GPIO pins to switch which fan the sensor reads from?
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next prev parent reply other threads:[~2012-05-21 20:07 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-21 13:45 [lm-sensors] ASRock 970 Extreme3 James
2012-05-21 18:11 ` Guenter Roeck
2012-05-21 20:07 ` James [this message]
2012-05-21 20:15 ` Guenter Roeck
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