Open bug in launchpad.net
"I installed Bionic Beaver and now upgraded to Cosmic Cuttlefish on this Lenovo Ideapad 330S-15ARR laptop. The touch pad doesn't work in either.
Some possibly relevant info from dmesg:
i2c_hid i2c-ELAN469D:00: i2c-ELAN469D:00 supply vdd not found, using dummy regulator
i2c_designware AMDI0010:01: controller timed out"
Cristian Aravena Romero (caravena)