Fan curve adjustable from OS (Linux)

[macpijan]

The problem you're addressing (if any)

The fan curve is not adjustable from OS level. It requires recompliation of EC firmware, or selecting one of the profiles ine the firmware menu: https://docs.dasharo.com/unified/novacustom/fan-profiles/

Describe the solution you'd like

I'd like that the fan curve can be configured from Linux, so I can use sysfs programming interface in my scripts, or GUI applications, to control the fan curve.

Where is the value to a user, and who might that user be?

Describe alternatives you've considered

None

Additional context

Some work was already done here by community contributor: pop-os/system76-acpi-dkms#9 (comment)
It seems it lacked testing and review, and maybe we could step in here with some support.

[wessel-novacustom]

No need from our side for this feature. Users can set the fan curve they like in the UEFI firmware settings. Moreover, they can temporarily switch to 100% fan speed with the shortcut Fn + 1. I think that is enough :-)

[tlaurion]

@wessel-novacustom but if not exposed through kernel (again system76_acpi driver I guess) then Heads will not be able to permit to tweak those settings?

[wessel-novacustom]

@wessel-novacustom but if not exposed through kernel (again system76_acpi driver I guess) then Heads will not be able to permit to tweak those settings?

I think that is correct. Ping @macpijan

So we need #820

[macpijan]

Yes, please see my comment here: #820 (comment)

It is challenging to please Linux, Windows, and now also heads users with a single firmware base. We were aware together with @wessel-novacustom of the fact, that some features implemented in the edk2 (UEFI firmware variant) will not be available in the heads firmware variant.