Bug 901491

Summary:	sys-kernel/gentoo-sources-6.1: Kernel does not recognize touchpad anymore
Product:	Gentoo Linux	Reporter:	Gentookh <ghz3>
Component:	Current packages	Assignee:	Gentoo Linux bug wranglers <bug-wranglers>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	Normal
Version:	unspecified
Hardware:	AMD64
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	dmesg-5.15.88 dmesg-6.1.12 libinput list-devices 5.15.88 .config 5.15.88 .config 6.1.19 lspci 5.15.88

Description Gentookh 2023-03-16 17:12:20 UTC

Since update to 6.1 my MSFT0001:00 06CB:CE44 Touchpad/Mouse is not recognised anymore.

Affected kernels:
- 6.1.12
- 6.1.19
- 6.2.6

Last working kernel:
- 5.15.88

Comment 1 Gentookh 2023-03-16 17:13:58 UTC

Created attachment 858017 [details]
dmesg-5.15.88

Comment 2 Gentookh 2023-03-16 17:14:43 UTC

Created attachment 858019 [details]
dmesg-6.1.12

Comment 3 Gentookh 2023-03-16 17:16:14 UTC

Created attachment 858021 [details]
libinput list-devices 5.15.88

Comment 4 Gentookh 2023-03-16 17:19:30 UTC

My machine is 82MS Yoga Slim 7 Pro 14ACH5

Comment 5 Gentookh 2023-03-16 17:21:24 UTC

Since 06CB appears to be Synaptics, I've tried the following suggestions:
https://wiki.gentoo.org/wiki/Synaptics#My_Touchpad_is_not_recognized

As well as adding more Synaptics configs to kernel, but nothing helped.

Comment 6 Gentookh 2023-03-16 17:28:22 UTC

Created attachment 858023 [details]
.config 5.15.88

Comment 7 Gentookh 2023-03-16 17:28:48 UTC

Created attachment 858025 [details]
.config 6.1.19

Comment 8 Gentookh 2023-03-16 17:32:31 UTC

Created attachment 858027 [details]
lspci 5.15.88

Comment 9 Gentookh 2023-03-16 17:57:23 UTC

5.15.102 works as well

Comment 10 Gentookh 2023-03-16 20:01:45 UTC

Adding `CONFIG_PINCTRL_AMD=y` solves the issue.

Credit: https://forums.gentoo.org/viewtopic-p-8263192.html?sid=2f7e9a02939efbdac365ddd2b3b8af72#8263192