I updated ubuntu 18.04 to 20.04. All worked fine for weeks until today. Touchpad on lenovo y580 stopped working just like that. I didn't install any new updates yesterday.
Xinput log:
Virtual core pointer id=2 [master pointer (3)]
↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
↳ PS/2 Synaptics TouchPad id=14 [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)]
↳ Sleep Button id=9 [slave keyboard (3)]
↳ Video Bus id=10 [slave keyboard (3)]
↳ Lenovo EasyCamera: Lenovo EasyC id=11 [slave keyboard (3)]
↳ Ideapad extra buttons id=12 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=13 [slave keyboard (3)]