My laptop works really well with the Synaptics touchpad drivers and they're not default in the newer versions. When using the instructions from the "Touchpad drivers" section, the touchpad driver is replaced with the correct ones, but every other input stops working, as libinput stops controlling everything else.
What solved my problem was installing the package xserver-xorg-input-all as well, the final command is:
Code: Select all
apt install xserver-xorg-input-all xserver-xorg-input-synaptics
I don't know if it's a recurring theme over here, but I think that may help other users.