SOLVED: Custom kernel on my pretty new FW13 without mouse pointer

[Tim_Boneko]

Hello!
I’m pretty happy with my laptop apart from one thing. I’m typically building my own kernel because i can. The latest ones i built started fine apart from the missing mouse. Are there non- intuitive kernel options that are needed to get a working mouse? I used the hid_multitouch driver combined with varying hid drivers, but to no avail - no mouse pointer to be seen. Affected OS is Debian 12 (stable) which runs rather fine with Debian kernels. The non-working kernel has version 6.14.0-rc2 but older versions show the same problem.
The FW13 has an AMD 7040 CPU.
Cheers & good night!

[Mitch_Dorrell]

I’ll check what kernel module I use in Gentoo and report back.

I’m replying now so that I can more easily find this post later.

[Kings]

https://wiki.gentoo.org/wiki/Framework_Laptop_13#Touchpad_not_working

You may refer to this guide for troubleshooting:

Verify the “HID over I2C transport layer ACPI” is available.
If “PIXA3854” cannot be found in the dmesg log, then the kernel is likely missing driver support.

[Ben_Roberts]

I think Kings is right. Here’s my dmesg output showing the “mouse” is being accessed over I2C.

[ +0.000164] input: PIXA3854:00 093A:0274 Mouse as /devices/platform/AMDI0010:03/i2c-1/i2c-PIXA3854:00/0018:093A:0274.0002/input/input4
[ +0.000074] input: PIXA3854:00 093A:0274 Touchpad as /devices/platform/AMDI0010:03/i2c-1/i2c-PIXA3854:00/0018:093A:0274.0002/input/input5
[ +0.000063] hid-generic 0018:093A:0274.0002: input,hidraw1: I2C HID v1.00 Mouse [PIXA3854:00 093A:0274] on i2c-PIXA3854:00

[Tim_Boneko]

Thanks already, i’ll have that checked in a few minutes. It’s a bit embarrassing without pointing device!
Reboot ensuing…

[Tim_Boneko]

This seems to be the culprit! The only relevant line in journalctl output is:
Apr 13 09:45:03 rapunzel kernel: i2c i2c-PIXA3854:00: deferred probe pending: (reason unknown)
After pulling my USB mouse out of a cardboard box, i even found a mouse pointer. I’ll stick to the guide that was posted. Thanks a ton!
tim

[Tim_Boneko]

It seems i enabled all the necessary drivers, but compiled the wifi and graphics drivers into the kernel. Turning these two drivers into modules seemingly fixed the issue!
@Kings Thanks for fast and informative input, this went rather quick!

Must now check how the #fediverse instance i attend behaves like. The original debian kernel had some hickup loading the site. That particular site seems down right now.