From: Guenter Roeck <guenter.roeck@ericsson.com>
To: lm-sensors@vger.kernel.org
Subject: Re: [lm-sensors] ASUS Sabertooth Z77 / nct6775.ko report
Date: Sun, 10 Jun 2012 06:30:27 +0000 [thread overview]
Message-ID: <20120610063027.GB10102@ericsson.com> (raw)
In-Reply-To: <20120523123730.6f2d7e36@desktop>
On Sat, Jun 09, 2012 at 02:35:18PM -0400, Torbjörn Österdahl wrote:
> I have got a Asus P8Z77-M PRO and have similar experiences.
>
> - The standard lm-sensors package that comes with my distribution, (i:3.3.1/
> Ubuntu), does not include support for setting PWM fan speeds.
> - By downloading and compiling the nct6775 module from https://github.com/
> groeck/nct6775 these things work to statisfaction.
> - Temperatures as read from the chipset is low. Compared to temperatures
> measured by a thermometer in the case they are lower and does not go up as
> quickly when they system load increases. I.e. my idle system have a chipset
> temperature of 28 Degrees - they temperature in the case is meassured to 32.
> The loaded system reports a chipset temperature of 32 but the thermometer in
> the case reports 44!
> - Case temperature as read from the acpiz module are identical though.
I can't really comment on that. No idea how accurate the sensors are.
Some of the sensors (eg the CPU sensor if measured through PECI) are extremely
inaccurate at low temperatures.
> - hysteresis values, i.e. pwm3_auto_point1_temp_hyst, behave strange. It is
> depenant on the corresponding temp field and often takes negative values.
The hysteresis should show a constant difference to the matching temperature,
and is displayed as absolute temperature.
For example, assume pwm3_auto_point1_temp_hyst is set to 20000 and pwm3_auto_point1_temp
is set to 60000. If you change pwm3_auto_point1_temp to 30000, pwm3_auto_point1_temp_hyst
should change to -10000. Is that what you see ?
> - In Thermal Cruise mode it sometimes stops the fan completely which I consider
> unnecessary. I was not able to prevent this.
pwmX_stop_output is the lowest pwm value. It is only used if pwmX_stop_output_enable
is set, otherwise the output drops to 0. Can you try this ?
Thanks,
Guenter
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next prev parent reply other threads:[~2012-06-10 6:30 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-23 9:37 [lm-sensors] ASUS Sabertooth Z77 / nct6775.ko report Dmitriy Pinchukov
2012-05-23 15:33 ` Guenter Roeck
2012-06-09 18:35 ` Torbjörn Österdahl
2012-06-10 1:34 ` Guenter Roeck
2012-06-10 6:30 ` Guenter Roeck [this message]
2012-06-10 8:25 ` Torbjörn Österdahl
2012-06-10 12:56 ` Andrey Repin
2012-06-10 15:35 ` Guenter Roeck
2012-06-10 15:42 ` Guenter Roeck
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