Alps PS/2

To get the Alps touchpad working, the kernel option ALPS PS/2 mouse protocol extension ( CONFIG_MOUSE_PS2_ALPS ) needs to be activated. Since gentoo-sources:4.19.63 also IBM Trackpoint PS/2 mouse protocol extension ( CONFIG_MOUSE_PS2_TRACKPOINT ) is needed, see bug.

It can be operated using the libinput driver and the default configuration as set in should work sufficiently in most cases. Customization can be done via.

For more detailed instruction/description, see https://wiki.archlinux.org/index.php/Libinput#Common_options

and can be used to show the touchpad's characteristics:

External resources

 * https://forums.gentoo.org/viewtopic-t-1070134-highlight-.html