Fan Control Buttons Greyed Out - RDNA3 7800 XT

[andar1an]

Checklist

• [X] The problem is not listed in the hardware support matrix as a known limitation
• [X] I've included a debug snapshot if the issue is related to hardware configuration

Bug description

I have looked at the other issues, and I don't see something related to greyed out fan control for RDNA3.

I just found this today, so if I missed something I can close. Some direction would be great in that case please.

System info

- LACT version: 0.5.3
- GPU model: 7800XT
- Kernel version: 6.7.9
- Distribution: Debian 12

[ilya-zlobintsev]

There's a warning at the top that you need to enable overclocking support to use fan control. You can do it in the OC page.

[andar1an]

Oops, I missed that. Thank you @ilya-zlobintsev, this is very cool.

[andar1an]

@ilya-zlobintsev, I notice after enabling oc, setting a curve, and restarting that the fan speed is not being read. I think I saw another issue that may be similar, is this expected?

[ilya-zlobintsev]

Is the fan actually spinning? It's possible that it's not spinning, even with this custom curve, see the note in readme for RDNA3

It's also possible that the speed just isn't being reported correctly by the driver. Other people have had similar behaviour in #255.

[andar1an]

The sensor updates when temps begin to rise, so I think those are the most likely scenarios, thank you. Do you think it will eventually be possible to disable 0% fan mode like on Windows?

[ilya-zlobintsev]

It needs to be implemented on the kernel side, most likely by someone from AMD. I don't know if they're planning to do it or not.

[andar1an]

Hopefully that happens. They only support commercialized linux distros with their drivers at the moment which is frustrating.