Hi D.
Can you try uninstalling the nvidia-drivers from the "Additional Drivers" interface, just by choosing the nouveau drivers. Then reboot. Does the touchpad work now?
Then you might have a similar issue as I do on the P50: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-libinput/+bug/1826597
Hi D.
Can you try uninstalling the nvidia-drivers from the "Additional Drivers" interface, just by choosing the nouveau drivers. Then reboot. Does the touchpad work now?
Then you might have a similar issue as I do on the P50: /bugs.launchpad .net/ubuntu/ +source/ xserver- xorg-input- libinput/ +bug/1826597
https:/