From mboxrd@z Thu Jan 1 00:00:00 1970 From: Philipp Kraus Date: Mon, 02 Jul 2012 03:25:10 +0000 Subject: Re: [lm-sensors] CPU fan with full speed Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lm-sensors@vger.kernel.org On 2012-07-02 04:09:16 +0200, Guenter Roeck said: > On Mon, Jul 02, 2012 at 03:28:19AM +0200, Philipp Kraus wrote: >> On 2012-07-02 03:14:03 +0200, Philipp Kraus said: >> >>> On 2012-06-30 21:24:59 +0200, Guenter Roeck said: >>> >>>> On Sat, Jun 30, 2012 at 07:27:49PM +0200, Philipp Kraus wrote: >>>>> On 2012-06-30 19:03:44 +0200, Guenter Roeck said: >>>>> >>>>>> On Sat, Jun 30, 2012 at 06:04:53PM +0200, Philipp Kraus wrote: >>>>>>> On 2012-06-30 17:33:38 +0200, Guenter Roeck said: >>>>>>> >>>>>>>> On Sat, Jun 30, 2012 at 04:37:28PM +0200, Philipp Kraus wrote: >>>>>>>>> >>>>>>>>> the grep command shows >>>>>>>>> grep: /sys/class/hwmon/hwmon1/device/driver: Is a directory >>>>>>>>> grep: /sys/class/hwmon/hwmon1/device/hwmon: Is a directory >>>>>>>>> grep: /sys/class/hwmon/hwmon1/device/power: Is a directory >>>>>>>>> grep: /sys/class/hwmon/hwmon1/device/subsystem: Is a directory >>>>>>>>> >>>>>>>>> and within the directory are the in*, pwm* temp* files >>>>>>>>> >>>>>>>> Not sure I understand. >>>>>>>> >>>>>>>> I'll need the names and output for the pwm* and temp* files. They >>>>>>>> _should_ be in >>>>>>>> /sys/class/hwmon/hwmon1/device/pwm* and /sys/class/hwmon/hwmon1/device/temp*. >>>>>>> >>>>>>> the command grep /sys.... does not work, I have run an ls -l and >>>>>> >>>>>> Phil, >>>>>> >>>>>> It wasn't "grep /sys/...", it was "grep . /sys/class/hwmon/hwmon1/device/*". >>>>>> The "." is important. Your output gives me the file names, but I need names and >>>>>> content, not names and permissions. >>>>> >>>>> Sorry, my mistake, I haven't seen that it ist "grep . /sys..." >>>>> Hope this the correct output now >>>>> >>>>> /sys/class/hwmon/hwmon1/device/pwm1:252 >>>> >>>> Looks like all pwm values report the "default" pwm value. >>>> >>>>> /sys/class/hwmon/hwmon1/device/temp1_auto_channels_pwm:1 >>>> >>>> If I understand the code and the data sheet correectly, this attribute >>>> is a bit map used to map a temperature source to one or multiple fans. >>>> And it looks like all temperature sources are mapped to fan1, which >>>> in turn means that effectively temp4 controls the speed of fan1 (the highest >>>> temperature determines the fan speed), and all other fans are not mapped to >>>> a temperature input. >>>> >>>> What you should probably do is to find the association between tempX and pwmX >>>> and program tempX_auto_channels_pwm such that the two map. >>>> For example, if temp1 >>>> is the CPU1 temperature, and pwm4 (fan4) is connected to the CPU1 fan, write >>>> 0b00001000 = 0x08 into /sys/class/hwmon/hwmon1/device/temp1_auto_channels_pwm. >>>> Similar, if temp2 is the CPU2 temperature and fan5/pwm5 controls its fan, >>>> write 0x10 () into /sys/class/hwmon/hwmon1/device/temp2_auto_channels_pwm. >>> >>> You are write, temp1 and temp2 are the values for the CPU 1 and CPU 2. >>> The fans for the CPU >>> are fan7 = CPU 1 and fan8 = CPU 2 >>> >>> Can you explane me in detail how you create the map 0b00001000 = 0x08 ? >>> I think 0x08 = 0x8 = 8 is a hexadecimal value but is this 0b00001000 >>> also a hexadecimal value, in this case both values are not equal !? >>> Should I write with echo -e "\x8" > >>> /sys/class/hwmon/hwmon1/device/temp1_auto_channels_pwm ? >>> >>> IMHO I must enable (1) the n-th bit on the auto_channels_pwm value for >>> the n-th fan, so in my configuration the 7 and 8 bit (begin = 0)? >> >> I have set with >> echo 128 > /sys/class/hwmon/hwmon1/device/temp1_auto_channels_pwm >> echo 256 > /sys/class/hwmon/hwmon1/device/temp2_auto_channels_pwm >> >> the 7th and 8th fan-bit but nothing is changed >> > Does pwm7 and pwm8 still report 252 ? If so, we must be missing something. > > What do you get if you read back > /sys/class/hwmon/hwmon1/device/temp1_auto_channels_pwm and > /sys/class/hwmon/hwmon1/device/temp2_auto_channels_pwm ? I can insert each value [0,255] and than I can get back the value with cat but after setting the value, the RPM are alway around 6000, no changes also. I have tested on temp1 each bit value, but also no changes I have found a file /etc/fancontrol, but no process fancontrol, can be create this a problem? _______________________________________________ lm-sensors mailing list lm-sensors@lm-sensors.org http://lists.lm-sensors.org/mailman/listinfo/lm-sensors