Fan Speed indicator not working about lact

[ilya-zlobintsev]

What's the output of
cat /sys/class/drm/card0/device/hwmon/*/fan*_input
when this happens?

Most likely it's a bug in the kernel's reporting (on my RX 580 it keeps showing the last non-zero value when the fans turn off, so it wouldn't be surprising if there are other issues with it, especially on very new GPUs). Though if the fan speed is actually correctly set, that means that the driver properly reports minimum and maximum values for the speeds.

BTW, How does the overclocking work? I've implemented it according to the driver documentation, but as I don't have a new GPU to test it on please report if there are any issues. (also there's no voltage control currently)

[ilya-zlobintsev]

I've added GPU temperature and usage indicators to the OC page.

[Alexander-LIT]

Thank you for your replies ilyazzz!

Output of:

cat /sys/class/drm/card0/device/hwmon/*/fan*_input
0

When I try the OC settings the following happens:
Automatic: Card uses a variety of clockspeeds between 0 - 500 - 2565
Highest Clocks: Card switches between 0 and 2565 (with slight fluctuation in the maxclock 2555-2565)
Lowest Clocks: Card switches between 0 and 500Mhz

My card is still set to "Quiet" BIOS since I am still lacking a waterblock for it.
I read that full overclocking support was not going to be available until kernel 5.12 I believe?

[ilya-zlobintsev]

The kernel does seem to be reporting 0 as the fan speed. It would be possible to show the fan speed values that the daemon tells the driver to use, but that's less accurate than reading the actual RPM values of the fan.

As for overclocking, I'm curious on how it works on all GPUs that use the new format, which are Vega20(Radeon VII/Navi) and newer. If the clockspeed sliders don't show up even after the kernel parameter, then most likely the kernel doesn't support overclocking on your GPU yet.

[Alexander-LIT]

I will report back in when 5.12 releases on Manjaro.
If there is any more information I can supply that would be useful, please let me know :-)

[ilya-zlobintsev]

Closing because of age and most likely being a problem on the kernel side, please re-open if you still have the issue.