I have been having the problem with my notebook “Lenovo ThinkBook 14 20SL0032GE i5-1035G1” that the touchpad dosent work after the installation of Zorin os 15.3 core.
After communication with Zorin Support, i tried this repo:
sudo add-apt-repository ppa:kaihengfeng/lp1853277
And a new kernel
sudo apt install linux-headers-5.4.0-49-generic linux-image-unsigned-5.4.0-49-generic linux-modules-5.4.0-49-generic
But thats couldnt help my problem and we didnt reach to any soloution.