Quote from: tytanick on June 18, 2017, 11:53:03 AM

Here you will get a list of fan speed devices in linux:

root@simpleminer:~/utils# ls -1 /sys/class/drm/card*/device/hwmon/hwmon*/pwm1
/sys/class/drm/card1/device/hwmon/hwmon0/pwm1
/sys/class/drm/card2/device/hwmon/hwmon1/pwm1
/sys/class/drm/card3/device/hwmon/hwmon2/pwm1
/sys/class/drm/card4/device/hwmon/hwmon3/pwm1
/sys/class/drm/card5/device/hwmon/hwmon4/pwm1
/sys/class/drm/card6/device/hwmon/hwmon5/pwm1
root@simpleminer:~/utils# cat /sys/class/drm/card1/device/hwmon/hwmon0/pwm1
153

If you want to convert this value to % then you need to make simple calculation 153/254 which is 0.6
Multiply that by 100 and you have 60% fan speed.
So the max speed for gpus is 254 and you can inset that speed to the system by using command:
as root: echo "254" > /sys/class/drm/card1/device/hwmon/hwmon0/pwm1
But renember that my script will overwrite fan speed in system.
(acculaty it could be 254, 255 or 256, i dont renember what was top value Tongue

Thnk u for the answer. I know how to get percentage of gpu fans. The question was - what could be wrong with exactly hwmon3. It shows pwm1 of 73 with is about 28% of max fan value, while at the same time fan1_input have crazy value of 3306 rpm. I dont want to regulate. My goal is to get current fan values in rpm, not percentage.

kaN5300

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