Touchpad not detected by kernel on ThinkPad X13 Gen5

[Sébastien Villemot]

Hi,

I recently bought a ThinkPad X13 Gen5 (benefiting from the discount
generously offered by Lenovo to Debian Developers).

The laptop runs Debian Bookworm, and I got almost all the hardware to
work by using more recent kernel and firmware files (see Debian bug
reports #1070647, #1070648, #1070650).

However, I still can’t get the touchpad to work. It is apparently not
recognized by the kernel, since the touchpad does not appear in
/proc/bus/input/devices, and there is nothing in the kernel log. Note
that the computer runs a custom build of Linux kernel 6.9.1.

I opened a bug report against the kernel:
https://bugzilla.kernel.org/show_bug.cgi?id=218868

I’m largely ignorant of everything related to input drivers, so ideally
I would need help to further debug this and provide more useful
information to the kernel developers.

Thanks,

[David]

Post by Sébastien Villemot
I recently bought a ThinkPad X13 Gen5 (benefiting from the discount
generously offered by Lenovo to Debian Developers).
The laptop runs Debian Bookworm, and I got almost all the hardware to
work by using more recent kernel and firmware files (see Debian bug
reports #1070647, #1070648, #1070650).
However, I still can’t get the touchpad to work. It is apparently not
recognized by the kernel, since the touchpad does not appear in
/proc/bus/input/devices, and there is nothing in the kernel log. Note
that the computer runs a custom build of Linux kernel 6.9.1.
https://bugzilla.kernel.org/show_bug.cgi?id=218868
I’m largely ignorant of everything related to input drivers, so ideally
I would need help to further debug this and provide more useful
information to the kernel developers.

Hi,

This discussion related to those bugs might interest you:
https://lists.debian.org/debian-kernel/2024/04/msg00247.html
https://lists.debian.org/debian-kernel/2024/05/msg00032.html

[Sébastien Villemot]

Post by Sébastien Villemot
I recently bought a ThinkPad X13 Gen5 (benefiting from the discount
generously offered by Lenovo to Debian Developers).
However, I still can’t get the touchpad to work. It is apparently not
recognized by the kernel, since the touchpad does not appear in
/proc/bus/input/devices, and there is nothing in the kernel log. Note
that the computer runs a custom build of Linux kernel 6.9.1.

Actually, as pointed out privately to me by Mark Pearson, the problem
is that CONFIG_PINCTRL_METEORLAKE was not enabled in my kernel
configuration.

This issue is tracked in Debian as #1072108.