#8 from Kai-Heng Feng (kaihengfeng) fixed the issue for me on Lenovo P72 Intel® Core™ i7-8750H running Ubuntu 18.10 kernel 4.18.0-15-generic #16-Ubuntu SMP. I added the following line to my /etc/default/grub
GRUB_CMDLINE_LINUX="psmouse.elantech_smbus=0"
then ran "sudo update-grub" in the usual way and track pad and buttons work now.
#8 from Kai-Heng Feng (kaihengfeng) fixed the issue for me on Lenovo P72 Intel® Core™ i7-8750H running Ubuntu 18.10 kernel 4.18.0-15-generic #16-Ubuntu SMP. I added the following line to my /etc/default/grub
GRUB_CMDLINE_ LINUX=" psmouse. elantech_ smbus=0"
then ran "sudo update-grub" in the usual way and track pad and buttons work now.