Testing Ubuntu Unity Impish ISO, I've just realized that touchpad click doesn't work either, although installing xserver-xorg-input-synaptics helped with that. Touchpad can be configured as expected (additional checkboxes appeared), the mouse cannot, though. Installing x-x-i-mouse did not help either.
Regardless, I think x-x-i-synaptics has to be included in the ISO.
Testing Ubuntu Unity Impish ISO, I've just realized that touchpad click doesn't work either, although installing xserver- xorg-input- synaptics helped with that. Touchpad can be configured as expected (additional checkboxes appeared), the mouse cannot, though. Installing x-x-i-mouse did not help either.
Regardless, I think x-x-i-synaptics has to be included in the ISO.