I have seen this issue before on different forums and I understand Lenovo laptops aren't fully supported. However my touchpad sometimes works, I am a relatively new linux user, I first tried ubuntu 16.04LTS now 18.04LTS both 64bit, I have a feeling something wrong happened during upgrading.
When I boot laptop I get this error two times:
error: no symbol table. Press any key to continue...
Then it takes around 5 minutes to boot into login, on 16.04 it barely took seconds.
xinput
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ Power Button id=6 [slave keyboard (3)]
↳ Video Bus id=7 [slave keyboard (3)]
↳ Power Button id=8 [slave keyboard (3)]
↳ Lenovo EasyCamera: Lenovo EasyC id=9 [slave keyboard (3)]
↳ Ideapad extra buttons id=10 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=11 [slave keyboard (3)]