Custom kernel: no audio, no touchpad

Custom kernel: no audio, no touchpad

[Pierre Neidhardt]

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Hello Guix!

Exciting times ahead for me, I've successfully booted Guix on a custom
kernel.

It works pretty well so far except for sound and touchpad support which
are missing.

On linux-libre:

--8<---------------cut here---------------start------------->8---
$ lspci -k
...
00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21)
	Subsystem: Xiaomi Device 1604
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd_hda_intel, snd_soc_skl
--8<---------------cut here---------------end--------------->8---

I'm not sure where to get information about the Touchpad.  Well, my
laptop is a Xiaomi Air 13.

I've played with `make menuconfig` for a while and added a bunch of
Intel HD audio related modules,  loads of codecs, to no avail.

I guess I need more experience with the kernel.  Would anyone have some
tips or documentation pointers?

Even better: is there a way to derive the right .config from a working
kernel?

--
Pierre Neidhardt
https://ambrevar.xyz/

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Re: Custom kernel: no audio, no touchpad

[Pierre Neidhardt]

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Tips, anyone? :)

-- 
Pierre Neidhardt
https://ambrevar.xyz/

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Re: Custom kernel: no audio, no touchpad

[Ricardo Wurmus]

Hi Pierre,

Are the files under ./gnu/packages/aux-files/linux-libre/ of any help to
you?

--
Ricardo

Re: Custom kernel: no audio, no touchpad

[Pierre Neidhardt]

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They work untouched (obviously), however I am not sure how to tweak them
because 1) maybe options have dependencies 2) it's not easy to guess what is
what :p

The current linux-libre packages much more than I need, and my goal is to
produce a .config that is tailored to my machine.
So I could start from the aux-file and disable options one by one, but that
sounds like shooting in the dark while being extremely tedious.

If I just look at the mouse/trackpad and sound related options, I can't see
anything obvious that'd be missing, but maybe it's sheer lack of knowledge on my
end.

-- 
Pierre Neidhardt
https://ambrevar.xyz/

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