Issue: SYNA3602 [Hantick 5288] i2c multitouch touchpad not supported in Alpine
Please forgive me if I mis-filed this. I think it has to do with the kernel build, but I don't see a way to file there.
In summary, my GeoBook Geo120 has the SYNA3602 [Hantick 5288] i2c multitouch touchpad, which apparently can be a bit of a pain to get working out of the box. That being said, I've tested Debians (Debian stable, Ubuntu 21.04, Mint 21.04, popOS), Arches (Manjaro, Endeavor), openSUSEs (Tumbleweed, Gecko), and Solus on this hardware, and they all support my touchpad out of the box.
Thread with machine/setup details:
https://discourse.gnome.org/t/help-inquiry-trouble-with-gnome-40-4-gdm-on-alpine-3-14-1-edge-with-linux-lts/7337?u=saijin_naib
In my digging around, it looks like there may need to be a module or patch loaded in the kernel configuration to address this and support this hardware for this device and all other platforms which also use it. https://patchwork.kernel.org/project/linux-input/patch/20171107122800.23196-1-hdegoede@redhat.com/
This is referenced by this Manjaro thread:
https://forum.manjaro.org/t/syna3602-touchpad-not-working-at-all/3108