[SOLVED] I2C touchpad recognized as a PS2 Logitech mouse

[Cazzantonio]

Hi everybody, I'm currently struggling with my new laptop to get the gentoo kernel to recognize the touchpad.

At present it is seen as a simple ps2 mouse, but booting ubuntu or manjaro I see that it's correctly recognized, so it must be some kernel module that I'm missing.

Here is my xinput

[pietinger]

Hi Cazzantonio,

I paste myself from this thread: https://forums.gentoo.org/viewtopic-t-1145154-highlight-.html (maybe you want read, because OP was successful)

[grknight]

I would suggest hunting down the last existing device in the path. Within the same machine, the /sys path will be the same for all. (/sys is omitted from the udev output, but just put it there before /devices every time.)

This would at least clue in to what is the functioning device and what needs more investigation

[Cazzantonio]

Thanks a lot, I'll try with the infos found in the german post (seems clear enough, and my girfriend is half-german so I could manage to traslate potential obscure points).

I'll report it if I solve the issue
_________________
Any mans death diminishes me, because I am involved in Mankinde; and therefore never send to know for whom the bell tolls; It tolls for thee.
-John Donne

[Cazzantonio]

No luck, sorry. I tried to compile in all the suggested options, which by the way were already been compiled as modules, but it still doesn't work and doesn't appear in xiput

Reading the first thread of the two, I see that it seems suggested (not clearly stated) that the touchpad only works with wayland... uh... I have plain old X, should I try to see if it works in wayland?
Apart from the fact that I barely know what wayland is (another X server basically), I use xfce which, as far as I know, still doesn't support wayland.

I'll see if I manage to get this wayland working, and I sincerely think it can't be the root of the problem... if it is, I get the impression that linux is becoming more and more macos style, dropping legacy stuff and all
Forgive my rant of an old-school linux user

Thanks for now, If anyone have some more suggestions I'll be happy to try them!
_________________
Any mans death diminishes me, because I am involved in Mankinde; and therefore never send to know for whom the bell tolls; It tolls for thee.
-John Donne

[pietinger]

[Cazzantonio]

Yes wayland have nothing to do with this. Xubuntu doesn't have wayland and recognizes the touchpad just fine.

I already have
INPUT_DEVICES="evdev synaptics libinput"
and
dev-libs/libinput
and
x11-drivers/xf86-input-libinput

So it should be already covered.
I also already tried all conceivable combinations of static and module drivers (related to these things, so HID, input devices, multifunction, etc...). All the modules mentioned in the above suggestion were already among the first that I included in my tests. Consider that it has been a week since I started testing and I tried several kernel build each day (depending on my free time).

The laptop is a "Pcspecialist Elimina", a configurable laptop based on a core 17-11800H
_________________
Any mans death diminishes me, because I am involved in Mankinde; and therefore never send to know for whom the bell tolls; It tolls for thee.
-John Donne

[pietinger]

[pietinger]

Be sure to have this:

[pietinger]

And of course all from our AMD64 handbook:

[pietinger]

Are you sure you have this ? ->

[Cazzantonio]

Thanks pietinger,
I removed evdev and synaptics, uninstalled the corresponding x11 drivers, and also double checked that everything you suggested is already build-in in the kernel

Still no luck, touchpad is still not recognized as such
_________________
Any mans death diminishes me, because I am involved in Mankinde; and therefore never send to know for whom the bell tolls; It tolls for thee.
-John Donne

[grknight]

[Cazzantonio]

[grknight]

Please post your kernel config to a paste site. Perhaps some details could be found.

The next driver that should be necessary is CONFIG_I2C_HID_ACPI.

If built as a module, it may need to be loaded using:

[Cazzantonio]

Yes I2C_HID_ACPI is already compiled in.

Here is my full kernel config:
https://justpaste.it/2agtk
_________________
Any mans death diminishes me, because I am involved in Mankinde; and therefore never send to know for whom the bell tolls; It tolls for thee.
-John Donne

[Cazzantonio]

SOLVED!

I had to remove the following boot parameters, which were left from the previous installation on my old notebook:
acpi_osi=! acpi_osi=Windows 2009

I don't even remember what they did. I only remember they rewrote some indentification string in the ACPI parameters from the bios that allowed the sound card to be correctly recognized on my old laptop, along with other ACPI quirks.

Things seems to be working now. At least my touchpad is correctly recognized.

Little rant:
Hardware things (which should ideally be single devices independent on the rest of the hardware) are becoming more and more entangled with complex interactions with other seemingly unrelated pieces of hardware... If a notebook becomes a complex system, unpredictable behavior, chaos and other funny things are just around the corner

Thanks everybody for the help given!
_________________
Any mans death diminishes me, because I am involved in Mankinde; and therefore never send to know for whom the bell tolls; It tolls for thee.
-John Donne

[pietinger]

Cazzantonio,

I see you have tried to enable as much as possible in your kernel config (even AMD parts). And I have seen also this (I have made this while you found the solution by yourself):

[Cazzantonio]

[pietinger]

For your microcode maybe take a look into your dmesg (at the very beginning).