[Solved]Touchpad not working on manually configured kernel

AprilGrimoire · n00b Joined: 05 Jun 2020 Posts: 57

Hi

I'm running Gentoo on a Mechrevo Yilong15Pro Laptop. The laptop mostly worked fine, however the touchpad doesn't work on my manually configured kernel. It shares the userspace file structure with ubuntu kernel, and is compiled from the same kernel version. so I think it is a kernel config issue.

The touchpad seems to communicate with i2c protocol. I managed to get the manually configured kernel to recognize the i2c controller, however it doesn't recognize the device.

Here's logs on the manually configured kernel, including lsmod, libinput list-devices and i2cdetect: https://0bin.net/paste/yjRq5W7f#3iFS91IVOd2-8syg9ixSFGfP514Kr9c49S1CC825VAt

Here's logs on kernel with config copied from ubuntu: https://0bin.net/paste/+JfRGLnZ#vhe0F9-+gDWv86U+6DmeAWNA0O1SycmiKhkDDcl1uvk

The touchpad is labeled UNIW0001:00 093A:0255, with little information online.

Any clues? Thanks!

pietinger · Posted: Wed Aug 14, 2024 10:49 am Post subject:

AprilGrimoire,

both files you have put on a paste service are not readable.

We had a lot of problems with i2c connected touchpads in the past; maybe you want read:

* https://forums.gentoo.org/viewtopic-t-1170368-highlight-.html
* https://forums.gentoo.org/viewtopic-t-1170201-highlight-.html

or directly chapter 4.7 of:

- https://wiki.gentoo.org/wiki/User:Pietinger/Tutorials/Manual_Configuring_Kernel_Version_6.6

(please note: You will need pinctrl for i2c)

If this does not help you, I would need your current kernel .config file.
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AprilGrimoire · n00b Joined: 05 Jun 2020 Posts: 57

AprilGrimoire · n00b Joined: 05 Jun 2020 Posts: 57

pietinger · Posted: Wed Aug 14, 2024 5:33 pm Post subject:

I was able to check your 6.10 configuration (this requires a browser with javascript; which we are reluctant to do) and see that the most important option of all is missing:

# CONFIG_X86_AMD_PLATFORM_DEVICE is not set

(this module enables other modules).

Maybe have (again?) a look into (right at the beginning of part 1):

https://wiki.gentoo.org/wiki/User:Pietinger/Tutorials/Manual_Configuring_Kernel_Version_6.6
_________________
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AprilGrimoire · n00b Joined: 05 Jun 2020 Posts: 57

pietinger · Posted: Wed Aug 14, 2024 8:24 pm Post subject: