RX 7900 XTX Fan Curve control issues

[KarnF91]

I've been trying to get the fans to work and have had no luck so far.

I've read through #79 and I'm at an impasse.

When I do cat /sys/class/drm/card1/device/gpu_od/fan_ctrl/fan_curve I get

0: 0C 0%
1: 0C 0%
2: 0C 0%
3: 0C 0%
4: 0C 0%
OD_RANGE:
FAN_CURVE(hotspot temp): 25C 100C
FAN_CURVE(fan speed): 20% 100%

When I then do the suggested echo commands I get this

0 50 15
tee: /sys/class/drm/card1/device/gpu_od/fan_ctrl/fan_curve: Invalid argument
1 50 15
tee: /sys/class/drm/card1/device/gpu_od/fan_ctrl/fan_curve: Invalid argument
2 50 15
tee: /sys/class/drm/card1/device/gpu_od/fan_ctrl/fan_curve: Invalid argument
3 50 15
tee: /sys/class/drm/card1/device/gpu_od/fan_ctrl/fan_curve: Invalid argument
4 50 15
tee: /sys/class/drm/card1/device/gpu_od/fan_ctrl/fan_curve: Invalid argument
c

Any advice would be greatly appreciated in solving this issue. Been trying for a couple days to get these fans working. Afraid to really put it through its paces on Linux without being able to control my fans in same way.

[Lurkki14]

The third argument (fan speed) needs to be 20 - 100. What problem do you get with tuxclocker itself?

[KarnF91]

Oh sorry I wasn't clear about that, didn't realize that until you mentioned it. Inside tuxclocker the fan control has no effect. I've set Fan Speed to different settings including 100% (currently at 35%). The only option I have in Fan Mode is Automatic. The other Fan Speed does show fan speed when they do turn on for a few seconds. It is acting similar to Zero RPM mode on Windows once it hits a certain temp the fans ramp up and once it drops below the threshold they turn off again.

I may have entered this wrong (still new to Linux). I entered 20-100 and got

0 50 20-100
tee: /sys/class/drm/card1/device/gpu_od/fan_ctrl/fan_curve: Invalid argument
1 50 20-100
tee: /sys/class/drm/card1/device/gpu_od/fan_ctrl/fan_curve: Invalid argument
2 50 20-100
tee: /sys/class/drm/card1/device/gpu_od/fan_ctrl/fan_curve: Invalid argument
3 50 20-100
tee: /sys/class/drm/card1/device/gpu_od/fan_ctrl/fan_curve: Invalid argument
4 50 20-100
tee: /sys/class/drm/card1/device/gpu_od/fan_ctrl/fan_curve: Invalid argument
c

After that I noticed the space and entered 20 - 100 and got

0 50 20 - 100
tee: /sys/class/drm/card1/device/gpu_od/fan_ctrl/fan_curve: Invalid argument
1 50 20 - 100
tee: /sys/class/drm/card1/device/gpu_od/fan_ctrl/fan_curve: Invalid argument
2 50 20 - 100
tee: /sys/class/drm/card1/device/gpu_od/fan_ctrl/fan_curve: Invalid argument
3 50 20 - 100
tee: /sys/class/drm/card1/device/gpu_od/fan_ctrl/fan_curve: Invalid argument
4 50 20 - 100
tee: /sys/class/drm/card1/device/gpu_od/fan_ctrl/fan_curve: Invalid argument
c
If this turns out to be something as simple as me not entering the commands right I'm sorry.

[Lurkki14]

The string you're entering needs to be 0 50 20. Sounds like tuxclocker is successful in writing to the file though. Maybe the fan_minimum_pwm interface is needed to make the fan spin up earlier?

[KarnF91]

Okay I've entered 0 50 20 and don't get the invalid argument anymore

cat /sys/class/drm/card1/device/gpu_od/fan_ctrl/fan_curve now returns

OD_FAN_CURVE:
0: 50C 20%
1: 50C 20%
2: 50C 20%
3: 50C 20%
4: 50C 20%
OD_RANGE:
FAN_CURVE(hotspot temp): 25C 100C
FAN_CURVE(fan speed): 20% 100%

So progress! I don't know how to do the fan_minimum_pwm if we still need to do that.