From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Justin Piszcz" Date: Wed, 03 Jul 2013 20:59:37 +0000 Subject: Re: [lm-sensors] 3.10: NCT6776F sensor question with Supermicro X9SRL-F motherboard Message-Id: <00ad01ce7830$3b135890$b13a09b0$@lucidpixels.com> MIME-Version: 1 Content-Type: multipart/mixed; boundary="===============8580252658023592817==" List-Id: References: <002901ce77e9$dfac4f20$9f04ed60$@lucidpixels.com> In-Reply-To: <002901ce77e9$dfac4f20$9f04ed60$@lucidpixels.com> To: lm-sensors@vger.kernel.org This is a multipart message in MIME format. --===============8580252658023592817== Content-Type: multipart/alternative; boundary="----=_NextPart_000_00AE_01CE780E.B402A2F0" Content-language: en-us This is a multipart message in MIME format. ------=_NextPart_000_00AE_01CE780E.B402A2F0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit -----Original Message----- From: Guenter Roeck [mailto:linux@roeck-us.net] Sent: Wednesday, July 03, 2013 4:57 PM To: Justin Piszcz Cc: linux-kernel@vger.kernel.org; lm-sensors@lm-sensors.org Subject: Re: [lm-sensors] 3.10: NCT6776F sensor question with Supermicro X9SRL-F motherboard [ .. ] > 09: 0a 00 00 00 00 0a 0a 0a 0a aa ef 80 ff 40 46 c4 > 0a: 0e 01 00 00 ff 00 00 ff 00 00 80 66 66 06 01 01 ^^ This shows that PECI Agent 0 is supposed to be enabled. > Bank 2: > 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f > 00: 8c 32 00 01 01 33 01 3c ff 33 ff ff 00 ff ff ff ^^ This value suggests that the second temperature sensor (the one creating the alarm) is supposed to be the PECI source (which reports the CPU temperature to the NCT6776), and that it is supposed to be used to control the speed of the CPU fan. ^^ Fan control is in manual mode. Did you set this ? It is quite unusual. Setting: Current FAN Mode is Optimal. Set Fan to Standard Speed Set Fan to Full Speed Set Fan to Optimal Speed > Bank 7: > 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f > 00: ff 95 02 10 00 00 00 00 00 64 00 00 00 00 00 00 > 01: 00 00 00 00 00 00 00 f8 80 f8 80 f8 80 f8 80 00 ^^ 00 here shows that the PECI source is not active, ie the CPU does not deliver PECI data to the NCT6776. This explains the alarm. Practical impact is probably limited as fan control is configured to be manual anyway, but I wonder why PECI doesn't work on your board. PECI configuration is identical to my Supermicro board. Guenter ------=_NextPart_000_00AE_01CE780E.B402A2F0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

-----Original Message-----
From: Guenter Roeck = [mailto:linux@roeck-us.net]
Sent: Wednesday, July 03, 2013 4:57 = PM
To: Justin Piszcz
Cc: linux-kernel@vger.kernel.org; = lm-sensors@lm-sensors.org
Subject: Re: [lm-sensors] 3.10: NCT6776F = sensor question with Supermicro X9SRL-F motherboard

[ .. = ]

> 09: 0a 00 00 00 00 0a 0a 0a 0a aa ef 80 ff 40 = 46 c4

> 0a: 0e 01 00 00 ff 00 = 00 ff 00 00 80 66 66 06 01 01

&nbs= p; = ; = &= nbsp; ^^

This shows = that PECI Agent 0 is supposed to be enabled.

> = Bank 2:

> 00 01 02 03 04 05 06 = 07 08 09 0a 0b 0c 0d 0e 0f

> = 00: 8c 32 00 01 01 33 01 3c ff 33 ff ff 00 ff ff ff

^^

This value suggests that the second temperature = sensor (the one creating

the = alarm) is supposed to be the PECI source (which reports the CPU = temperature

to the NCT6776), and = that it is supposed to be used to control the speed

of the CPU fan.

&nbs= p; ^^

Fan control is = in manual mode. Did you set this ?

It is quite unusual.

Setting: &= nbsp;

Current FAN Mode is = Optimal.

Set Fan to Standard Speed

Set Fan to Full = Speed

Set Fan to Optimal Speed

> = Bank 7:

> 00 01 02 03 04 05 06 = 07 08 09 0a 0b 0c 0d 0e 0f

> = 00: ff 95 02 10 00 00 00 00 00 64 00 00 00 00 00 00

> 01: 00 00 00 00 00 00 00 f8 80 f8 80 f8 80 f8 = 80 00

&nbs= p; = ; = &= nbsp; ^^

00 here shows that the PECI source is not active, = ie the CPU does not deliver

PECI = data to the NCT6776. This explains the alarm.

Practical impact is probably limited as fan control = is configured to be manual

anyway, = but I wonder why PECI doesn't work on your board. PECI = configuration

is identical to my = Supermicro board.

Guenter

=

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